Biology: Cells, Tissues, and Organs
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Questions and Answers

What is the basic building block of all living things?

  • Cells (correct)
  • Tissues
  • Organs
  • Organ Systems

    • Which organ is responsible for controlling other organs and their functions?

  • Lungs
  • Heart
  • Pancreas
  • Brain (correct)

    • What is the function of the Respiratory System?

  • Delivering oxygen to cells and removing waste products (correct)
  • Circulating blood throughout the body
  • Controlling body functions and responding to stimuli
  • Breaking down food into nutrients

    • Which system breaks down food into nutrients that can be absorbed by the body?

    <p>Digestive System</p> Signup and view all the answers

    What group of cells have similar structure and function?

    <p>Tissues</p> Signup and view all the answers

    Which organ system circulates blood throughout the body?

    <p>Circulatory System</p> Signup and view all the answers

    What is the main function of the Nervous System?

    <p>Controlling and coordinating body functions</p> Signup and view all the answers

    What is the main function of cells in the body?

    <p>Providing structure for the body</p> Signup and view all the answers

    Which of the following is NOT an organ in the human body?

    <p>Bronchi</p> Signup and view all the answers

    How do tissues differ from organs in the human body?

    <p>Tissues work together to perform specific jobs.</p> Signup and view all the answers

    Which system is responsible for exchanging oxygen and carbon dioxide between the body and the environment?

    <p>Respiratory System</p> Signup and view all the answers

    In terms of organ systems, what does homeostasis refer to?

    <p>The maintenance of stable internal conditions in the body</p> Signup and view all the answers

    Which system is responsible for regulating body functions using hormones produced by glands?

    <p>Endocrine System</p> Signup and view all the answers

    What type of muscles are responsible for involuntary movements and are found in organs and blood vessels?

    <p>Smooth muscles</p> Signup and view all the answers

    Which organ is responsible for pumping blood and is made up of cardiac muscles?

    <p>Heart</p> Signup and view all the answers

    What is the function of the skeletal system besides providing structural support for the body?

    <p>Blood cell production</p> Signup and view all the answers

    What is the main function of the Muscular System?

    <p>Facilitating movement in the body</p> Signup and view all the answers

    What is the primary function of the respiratory system?

    <p>Exchanging oxygen and carbon dioxide between the body and the environment</p> Signup and view all the answers

    How do tissues differ from cells in the human body?

    <p>Tissues are groups of cells with similar structure and function, while cells are individual units</p> Signup and view all the answers

    Which of the following is NOT an example of an organism according to the text?

    <p>Cells</p> Signup and view all the answers

    What is the main function of an organ within the human body?

    <p>To perform a specific function</p> Signup and view all the answers

    Which part of the body helps oxygen from breathed air enter the red cells in the blood?

    <p>Bronchi</p> Signup and view all the answers

    Which system is responsible for voluntary movements and includes muscles attached to bones?

    <p>Muscular System</p> Signup and view all the answers

    What is the main function of cardiac muscles in the human body?

    <p>Pumping blood</p> Signup and view all the answers

    Which of the following is NOT an organ in the Endocrine System?

    <p>Liver</p> Signup and view all the answers

    What is the primary function of smooth muscles in the human body?

    <p>Facilitate involuntary movements</p> Signup and view all the answers

    Which organ provides structural support, protects vital organs, and is responsible for blood cell production in the human body?

    <p>Femur (thigh bone)</p> Signup and view all the answers

    What is the function of tissues in the body?

    <p>Working together to perform a specific job</p> Signup and view all the answers

    Which organ is responsible for exchanging oxygen and carbon dioxide between the body and the environment?

    <p>Lungs</p> Signup and view all the answers

    What is the main function of the Circulatory System?

    <p>Circulating blood throughout the body</p> Signup and view all the answers

    Which organ is a part of the Respiratory System?

    <p>Nose</p> Signup and view all the answers

    What does the Nervous System primarily control and coordinate in the body?

    <p>Body's functions and responses to stimuli</p> Signup and view all the answers

    Which organ helps oxygen breathed air enter the red cells in the blood?

    <p>Trachea</p> Signup and view all the answers

    What is the role of organs in the body?

    <p>Providing structure for the body and converting nutrients into energy</p> Signup and view all the answers

    What is a group of cells with similar structure and function called?

    <p>Tissues</p> Signup and view all the answers

    What is the main function of the Digestive System?

    <p>Breaking down food into nutrients and eliminating waste</p> Signup and view all the answers

    Which organ is part of the Circulatory System?

    <p>Blood vessels (veins)</p> Signup and view all the answers

    Study Notes

    Cells

    • The basic building block of all living things
    • The human body is composed of trillions of cells
    • Cells are the smallest living thing in the body
    • Functions: provide structure for the body, take in nutrients from food, and convert nutrients into energy

    Tissues

    • A group of cells that have similar structure and function
    • Functions: work together to perform a specific job in the body

    Organs

    • A part of the body made up of tissue and cells that perform a specific function
    • Examples: brain, heart, lungs
    • Functions: brain - controls other organs and their function, heart - pumps blood and oxygen, lungs - helps oxygen enter the red cells in the blood

    Organ Systems

    • A group of organs that work together to perform a complex function
    • Examples: digestive system, nervous system, muscular system, cardiovascular system, endocrine system, skeletal system
    • Functions: digestive system - breaks down food into nutrients, nervous system - controls and coordinates body functions, muscular system - enables movement, cardiovascular system - circulates blood, endocrine system - regulates body functions using hormones, skeletal system - provides structural support for the body

    Organism

    • Reacts to stimuli, reproduces, grows, adapts, and maintains homeostasis
    • Examples: bacteria, humans, plants, animals

    Respiratory System

    • Function: responsible for breathing, exchanging oxygen and carbon dioxide between the body and the environment
    • Organs: nose, trachea, lungs, bronchi, diaphragm

    Circulatory System

    • Function: circulates blood throughout the body, delivering nutrients and oxygen to cells and removing waste products
    • Organs: heart, blood vessels (arteries, veins, capillaries), blood

    Digestive System

    • Function: breaks down food into nutrients that can be absorbed by the body and eliminates waste
    • Organs: mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas

    Nervous System

    • Function: controls and coordinates the body's functions and responds to internal and external stimuli
    • Organs: brain, spinal cord, nerves

    Endocrine System

    • Function: regulates body functions using hormones produced by glands
    • Organs: pituitary gland, thyroid gland, adrenal glands, pancreas, ovaries/testes

    Muscular System

    • Types of Muscles: skeletal muscles (attached to bones, responsible for voluntary movements), smooth muscles (found in organs and blood vessels, responsible for involuntary movements), cardiac muscles (found only in the heart, responsible for pumping blood)

    Skeletal System

    • Function: provides structural support for the body, protects organs, movement, and blood cell production
    • Major bones: skull, spine (vertebrae), ribs, sternum (breastbone), pelvis, femur (thigh bone), tibia (shin bone)

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    Description

    Learn about the basic building blocks of all living things, the functions of cells, how cells form tissues, and how tissues come together to create organs in the human body.

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