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Questions and Answers
What happens if a cell exceeds a certain size in relation to getting adequate nutrients and expelling waste?
What happens if a cell exceeds a certain size in relation to getting adequate nutrients and expelling waste?
Which of the following is the lowest level of biological organization that can perform all activities required for life?
Which of the following is the lowest level of biological organization that can perform all activities required for life?
What is the function of epithelial tissue in the body?
What is the function of epithelial tissue in the body?
Which type of tissue covers the outside of the body and lines organs and cavities?
Which type of tissue covers the outside of the body and lines organs and cavities?
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What is the function of interstitial fluid in the body?
What is the function of interstitial fluid in the body?
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Which is a specialized structure within a cell that performs a specific function?
Which is a specialized structure within a cell that performs a specific function?
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Why is increasing the surface area of the small intestine important for mammals?
Why is increasing the surface area of the small intestine important for mammals?
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How does the presence of microvilli in the small intestine affect nutrient absorption?
How does the presence of microvilli in the small intestine affect nutrient absorption?
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In the absence of microvilli on the small intestine, what is predicted to happen to nutrient absorption?
In the absence of microvilli on the small intestine, what is predicted to happen to nutrient absorption?
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How does diffusion limit the size of an organism?
How does diffusion limit the size of an organism?
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According to Fick’s law, how is the diffusion rate correlated to the surface area in the small intestine?
According to Fick’s law, how is the diffusion rate correlated to the surface area in the small intestine?
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How does having microvilli on the small intestine counteract the limitations imposed by diffusion?
How does having microvilli on the small intestine counteract the limitations imposed by diffusion?
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What is the main component found in the matrix of cartilage?
What is the main component found in the matrix of cartilage?
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Which cells are responsible for producing chondrocytes and the extracellular matrix of cartilage?
Which cells are responsible for producing chondrocytes and the extracellular matrix of cartilage?
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How do chondrocytes contribute to maintaining the cartilage matrix?
How do chondrocytes contribute to maintaining the cartilage matrix?
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What makes cartilage a strong yet flexible support material?
What makes cartilage a strong yet flexible support material?
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Where in the human body can cartilage be found?
Where in the human body can cartilage be found?
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What type of tissue binds epithelia to underlying tissues and holds organs in place?
What type of tissue binds epithelia to underlying tissues and holds organs in place?
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Where is fibrous (or dense) connective tissue found?
Where is fibrous (or dense) connective tissue found?
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What is the role of osteoblasts in bone formation?
What is the role of osteoblasts in bone formation?
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Which cells release an acid to dissolve collagen and mineral coating of bones?
Which cells release an acid to dissolve collagen and mineral coating of bones?
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What is the mineral that combines with collagen to harden within the bone matrix?
What is the mineral that combines with collagen to harden within the bone matrix?
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Which connective tissue is described as a strong and flexible support material?
Which connective tissue is described as a strong and flexible support material?
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What is the main purpose of negative feedback loops in organisms?
What is the main purpose of negative feedback loops in organisms?
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How do positive feedback loops differ from negative feedback loops in terms of their effect on trends?
How do positive feedback loops differ from negative feedback loops in terms of their effect on trends?
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Why are variables like blood glucose levels and body temperature regulated by negative feedback loops?
Why are variables like blood glucose levels and body temperature regulated by negative feedback loops?
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In what scenario would positive feedback loops be more advantageous than negative feedback loops?
In what scenario would positive feedback loops be more advantageous than negative feedback loops?
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What happens during childbirth that showcases the use of positive feedback loops?
What happens during childbirth that showcases the use of positive feedback loops?
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Why do smooth muscles not atrophy when a person leads a sedentary lifestyle?
Why do smooth muscles not atrophy when a person leads a sedentary lifestyle?
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Epithelial cells can only be cuboidal in shape.
Epithelial cells can only be cuboidal in shape.
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Pseudostratified epithelium always consists of multiple layers of cells.
Pseudostratified epithelium always consists of multiple layers of cells.
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Connective tissue mainly binds and supports other tissues.
Connective tissue mainly binds and supports other tissues.
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There are six major types of connective tissue in vertebrates.
There are six major types of connective tissue in vertebrates.
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Adipose tissue is an example of fibrous connective tissue.
Adipose tissue is an example of fibrous connective tissue.
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In pseudo-stratified epithelia, the cells are so crowded that the nuclei become aligned in one row.
In pseudo-stratified epithelia, the cells are so crowded that the nuclei become aligned in one row.
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Adipose tissue is a type of dense connective tissue that stores fat.
Adipose tissue is a type of dense connective tissue that stores fat.
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Osteoblasts mature into osteocytes as new bone is formed.
Osteoblasts mature into osteocytes as new bone is formed.
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Cartilage is a rigid and inflexible support material.
Cartilage is a rigid and inflexible support material.
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Osteoclasts release an acid to dissolve calcium and phosphate ions in bones.
Osteoclasts release an acid to dissolve calcium and phosphate ions in bones.
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Loose connective tissue binds muscles to bones.
Loose connective tissue binds muscles to bones.
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The combination of hard minerals and flexible collagen makes bone softer than cartilage.
The combination of hard minerals and flexible collagen makes bone softer than cartilage.
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Chondroblasts produce chondrocytes and the extracellular matrix of cartilage.
Chondroblasts produce chondrocytes and the extracellular matrix of cartilage.
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Chondrocytes are found in the matrix of cartilage, maintaining it by secreting collagen and elastin.
Chondrocytes are found in the matrix of cartilage, maintaining it by secreting collagen and elastin.
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Cartilage is a rigid support material due to the presence of elastic fibers within its structure.
Cartilage is a rigid support material due to the presence of elastic fibers within its structure.
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In humans, cartilage can be found in the nose, ears, and part of the rib cage only.
In humans, cartilage can be found in the nose, ears, and part of the rib cage only.
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The matrix of cartilage is primarily made up of a substance called keratin sulfate.
The matrix of cartilage is primarily made up of a substance called keratin sulfate.
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Increasing the surface area of the small intestine allows for a higher diffusion rate, leading to higher absorption of nutrients.
Increasing the surface area of the small intestine allows for a higher diffusion rate, leading to higher absorption of nutrients.
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Diffusion is most effective over long distances within an organism.
Diffusion is most effective over long distances within an organism.
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An organism's size can be limited by the effectiveness of diffusion in transporting nutrients and gases across its body.
An organism's size can be limited by the effectiveness of diffusion in transporting nutrients and gases across its body.
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The absence of microvilli on the small intestine would result in faster absorption of nutrients due to reduced surface area.
The absence of microvilli on the small intestine would result in faster absorption of nutrients due to reduced surface area.
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In the context of absorption, diffusion rate in the small intestine is inversely correlated with surface area.
In the context of absorption, diffusion rate in the small intestine is inversely correlated with surface area.
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To counteract the limitations imposed by diffusion in nutrient absorption, organisms have evolved structures like microvilli to increase surface area.
To counteract the limitations imposed by diffusion in nutrient absorption, organisms have evolved structures like microvilli to increase surface area.
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Positive feedback loops play a major role in maintaining homeostasis in organisms.
Positive feedback loops play a major role in maintaining homeostasis in organisms.
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During childbirth, the pressure of the baby's head against sensors near the opening of the uterus triggers negative feedback loops.
During childbirth, the pressure of the baby's head against sensors near the opening of the uterus triggers negative feedback loops.
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Smooth muscles are more prone to atrophy than skeletal muscles when a person leads a sedentary lifestyle.
Smooth muscles are more prone to atrophy than skeletal muscles when a person leads a sedentary lifestyle.
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Negative feedback loops are commonly used by organisms to regulate variables such as blood pressure and blood pH.
Negative feedback loops are commonly used by organisms to regulate variables such as blood pressure and blood pH.
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Positive feedback brings about a gradual decline in a particular trend.
Positive feedback brings about a gradual decline in a particular trend.
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The failure of a set point in conditions like diabetes highlights the importance of positive feedback in maintaining homeostasis.
The failure of a set point in conditions like diabetes highlights the importance of positive feedback in maintaining homeostasis.
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According to Fick’s law, the diffusion rate is directly correlated to the ______ area.
According to Fick’s law, the diffusion rate is directly correlated to the ______ area.
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Diffusion is effective over a very short ______.
Diffusion is effective over a very short ______.
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An organism's size can be limited by the effectiveness of diffusion in transporting nutrients and gases across its ______.
An organism's size can be limited by the effectiveness of diffusion in transporting nutrients and gases across its ______.
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Chondrocytes are found in the matrix of ______, maintaining it by secreting collagen and elastin.
Chondrocytes are found in the matrix of ______, maintaining it by secreting collagen and elastin.
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In the absence of microvilli on the small intestine, what is predicted to happen to nutrient ______?
In the absence of microvilli on the small intestine, what is predicted to happen to nutrient ______?
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The matrix of cartilage is primarily made up of a substance called ______ sulfate.
The matrix of cartilage is primarily made up of a substance called ______ sulfate.
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Animal form and function are correlated at all levels of biological organization. Size and shape affect the way an animal interacts with its ______.
Animal form and function are correlated at all levels of biological organization. Size and shape affect the way an animal interacts with its ______.
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The size and shape of single-cell organisms and tissues of multi-cellular organisms are associated with their capacity to exchange substances with the surrounding ______.
The size and shape of single-cell organisms and tissues of multi-cellular organisms are associated with their capacity to exchange substances with the surrounding ______.
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Many different animal body plans have evolved and are determined by the ______.
Many different animal body plans have evolved and are determined by the ______.
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Animals rely on exchange with the environment to acquire nutrients and gases necessary for metabolic function and eliminate ______.
Animals rely on exchange with the environment to acquire nutrients and gases necessary for metabolic function and eliminate ______.
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Aquatic single-celled organisms developed folds in the plasma membrane that increase its surface area, increasing the exchange ______ rate of molecules between the environment and the entire volume of the cytoplasm.
Aquatic single-celled organisms developed folds in the plasma membrane that increase its surface area, increasing the exchange ______ rate of molecules between the environment and the entire volume of the cytoplasm.
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To counteract the limitations imposed by diffusion in nutrient absorption, organisms have evolved structures like microvilli to increase surface ______.
To counteract the limitations imposed by diffusion in nutrient absorption, organisms have evolved structures like microvilli to increase surface ______.
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Cells can loosely adhere to each other in a liquid medium, or develop into multi-celled organisms to compensate for exceeding a certain distance in __________ size
Cells can loosely adhere to each other in a liquid medium, or develop into multi-celled organisms to compensate for exceeding a certain distance in __________ size
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____________ system is a group of organs that work together to perform a certain task
____________ system is a group of organs that work together to perform a certain task
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Epithelial tissue consists of tightly packed cells that cover the outside of the body and line the organs and cavities within the body, containing cells that are closely joined together by _________ junctions
Epithelial tissue consists of tightly packed cells that cover the outside of the body and line the organs and cavities within the body, containing cells that are closely joined together by _________ junctions
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Interstitial fluid fills the spaces between cells, the body fluid between blood vessels and _________
Interstitial fluid fills the spaces between cells, the body fluid between blood vessels and _________
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Organ system is a group of organs that work together to perform a certain task, while organ is a functional grouping of ________
Organ system is a group of organs that work together to perform a certain task, while organ is a functional grouping of ________
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Epithelial tissue consists of tightly packed cells that cover the outside of the body and line the organs and cavities within the body, containing cells that are closely joined together by _________ junctions
Epithelial tissue consists of tightly packed cells that cover the outside of the body and line the organs and cavities within the body, containing cells that are closely joined together by _________ junctions
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In what activities are skeletal muscles involved?
In what activities are skeletal muscles involved?
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Smooth muscles are involved in ______ activities of the body.
Smooth muscles are involved in ______ activities of the body.
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Diabetes is often associated with a lack in production of ______.
Diabetes is often associated with a lack in production of ______.
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A negative feedback loop helps in controlling body ______.
A negative feedback loop helps in controlling body ______.
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Negative feedback loops adjust to changes in the ______ or external environment.
Negative feedback loops adjust to changes in the ______ or external environment.
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Positive feedback loops can continue the stimulus and result in harm to the ______.
Positive feedback loops can continue the stimulus and result in harm to the ______.
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Blood tissue is composed of blood cells and cell fragments in blood plasma. The matrix is a liquid called plasma, consisting of water, salts, and a variety of dissolved proteins. Suspended in the plasma are erythrocytes (red blood cells), leukocytes (white blood cells) and cell fragments called thrombocytes (platelets). Blood tissue is mainly made up of blood cells and cell fragments suspended in a liquid called ______________.
Blood tissue is composed of blood cells and cell fragments in blood plasma. The matrix is a liquid called plasma, consisting of water, salts, and a variety of dissolved proteins. Suspended in the plasma are erythrocytes (red blood cells), leukocytes (white blood cells) and cell fragments called thrombocytes (platelets). Blood tissue is mainly made up of blood cells and cell fragments suspended in a liquid called ______________.
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Muscle tissue consists of long cells called muscle fibers, which contract in response to nerve signals. It is divided in vertebrate body into three types: Skeletal muscle is attached to bones and is responsible for voluntary body movement. Smooth muscle mainly lines internal organs and is responsible for involuntary body activities. Cardiac muscle is responsible for heart contraction to help pump blood throughout the body. Muscle tissue is made up of long cells called muscle fibers that can contract in response to ______________ signals.
Muscle tissue consists of long cells called muscle fibers, which contract in response to nerve signals. It is divided in vertebrate body into three types: Skeletal muscle is attached to bones and is responsible for voluntary body movement. Smooth muscle mainly lines internal organs and is responsible for involuntary body activities. Cardiac muscle is responsible for heart contraction to help pump blood throughout the body. Muscle tissue is made up of long cells called muscle fibers that can contract in response to ______________ signals.
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Nervous tissue senses stimuli and transmits electrical signals throughout the animal. Nervous tissue contains neurons, or nerve cells, that transmit nerve impulses, and glial cells that help nourish, insulate, and replenish neurons. Neurons have two distinct types of projections from the cell body: short, branching ______________ and long axons.
Nervous tissue senses stimuli and transmits electrical signals throughout the animal. Nervous tissue contains neurons, or nerve cells, that transmit nerve impulses, and glial cells that help nourish, insulate, and replenish neurons. Neurons have two distinct types of projections from the cell body: short, branching ______________ and long axons.
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Negative feedback loops and positive feedback loops are two types of feedback loops used by organisms to maintain internal balance. Negative feedback loops help organisms maintain a steady state regardless of changes in the external environment, also known as maintaining ______________.
Negative feedback loops and positive feedback loops are two types of feedback loops used by organisms to maintain internal balance. Negative feedback loops help organisms maintain a steady state regardless of changes in the external environment, also known as maintaining ______________.
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Nervous tissue senses stimuli and transmits electrical signals throughout the animal. Nervous tissue contains neurons, or nerve cells, that transmit nerve impulses, and glial cells that help nourish, insulate, and replenish neurons. Glial cells provide support and protection for ______________.
Nervous tissue senses stimuli and transmits electrical signals throughout the animal. Nervous tissue contains neurons, or nerve cells, that transmit nerve impulses, and glial cells that help nourish, insulate, and replenish neurons. Glial cells provide support and protection for ______________.
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Negative feedback loops are used by organisms to maintain a steady state or internal balance. Negative feedback loops help organisms counteract changes in the external environment and ensure the stability of internal conditions, also known as ______________.
Negative feedback loops are used by organisms to maintain a steady state or internal balance. Negative feedback loops help organisms counteract changes in the external environment and ensure the stability of internal conditions, also known as ______________.
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Nervous tissue contains neurons and glial cells. Neurons transmit nerve impulses, while glial cells provide support and protection for neurons. Neurons have two distinct types of projections from the cell body: short, branching dendrites and long ______________.
Nervous tissue contains neurons and glial cells. Neurons transmit nerve impulses, while glial cells provide support and protection for neurons. Neurons have two distinct types of projections from the cell body: short, branching dendrites and long ______________.
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Blood tissue is composed of blood cells and cell fragments in blood plasma. The matrix is a liquid called plasma, consisting of water, salts, and a variety of dissolved proteins. Blood tissue is mainly made up of erythrocytes (red blood cells), leukocytes (white blood cells) and cell fragments called thrombocytes (platelets) suspended in ______________.
Blood tissue is composed of blood cells and cell fragments in blood plasma. The matrix is a liquid called plasma, consisting of water, salts, and a variety of dissolved proteins. Blood tissue is mainly made up of erythrocytes (red blood cells), leukocytes (white blood cells) and cell fragments called thrombocytes (platelets) suspended in ______________.
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Smooth muscle mainly lines internal organs and is responsible for involuntary body activities. Smooth muscle is found in many internal structures of the human systems, such as the digestive tract, urinary tract, reproductive tract, blood vessels, and others. Smooth muscle mainly lines the internal organs and is responsible for ______________ activities.
Smooth muscle mainly lines internal organs and is responsible for involuntary body activities. Smooth muscle is found in many internal structures of the human systems, such as the digestive tract, urinary tract, reproductive tract, blood vessels, and others. Smooth muscle mainly lines the internal organs and is responsible for ______________ activities.
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Cardiac muscle is responsible for heart contraction to help pump blood throughout the body. Cardiac muscle is found in the heart and is under involuntary control. Cardiac muscle is responsible for pumping blood throughout the body through ______________.
Cardiac muscle is responsible for heart contraction to help pump blood throughout the body. Cardiac muscle is found in the heart and is under involuntary control. Cardiac muscle is responsible for pumping blood throughout the body through ______________.
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