37 Questions
What is the basic building block of all living things?
Cells
Which organ is responsible for controlling other organs and their functions?
Brain
What is the function of the Respiratory System?
Delivering oxygen to cells and removing waste products
Which system breaks down food into nutrients that can be absorbed by the body?
Digestive System
What group of cells have similar structure and function?
Tissues
Which organ system circulates blood throughout the body?
Circulatory System
What is the main function of the Nervous System?
Controlling and coordinating body functions
What is the main function of cells in the body?
Providing structure for the body
Which of the following is NOT an organ in the human body?
Bronchi
How do tissues differ from organs in the human body?
Tissues work together to perform specific jobs.
Which system is responsible for exchanging oxygen and carbon dioxide between the body and the environment?
Respiratory System
In terms of organ systems, what does homeostasis refer to?
The maintenance of stable internal conditions in the body
Which system is responsible for regulating body functions using hormones produced by glands?
Endocrine System
What type of muscles are responsible for involuntary movements and are found in organs and blood vessels?
Smooth muscles
Which organ is responsible for pumping blood and is made up of cardiac muscles?
Heart
What is the function of the skeletal system besides providing structural support for the body?
Blood cell production
What is the main function of the Muscular System?
Facilitating movement in the body
What is the primary function of the respiratory system?
Exchanging oxygen and carbon dioxide between the body and the environment
How do tissues differ from cells in the human body?
Tissues are groups of cells with similar structure and function, while cells are individual units
Which of the following is NOT an example of an organism according to the text?
Cells
What is the main function of an organ within the human body?
To perform a specific function
Which part of the body helps oxygen from breathed air enter the red cells in the blood?
Bronchi
Which system is responsible for voluntary movements and includes muscles attached to bones?
Muscular System
What is the main function of cardiac muscles in the human body?
Pumping blood
Which of the following is NOT an organ in the Endocrine System?
Liver
What is the primary function of smooth muscles in the human body?
Facilitate involuntary movements
Which organ provides structural support, protects vital organs, and is responsible for blood cell production in the human body?
Femur (thigh bone)
What is the function of tissues in the body?
Working together to perform a specific job
Which organ is responsible for exchanging oxygen and carbon dioxide between the body and the environment?
Lungs
What is the main function of the Circulatory System?
Circulating blood throughout the body
Which organ is a part of the Respiratory System?
Nose
What does the Nervous System primarily control and coordinate in the body?
Body's functions and responses to stimuli
Which organ helps oxygen breathed air enter the red cells in the blood?
Trachea
What is the role of organs in the body?
Providing structure for the body and converting nutrients into energy
What is a group of cells with similar structure and function called?
Tissues
What is the main function of the Digestive System?
Breaking down food into nutrients and eliminating waste
Which organ is part of the Circulatory System?
Blood vessels (veins)
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)
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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