Human Body Systems

Which statement describes the organization of living organisms?

• All organisms are composed of many cells, which are the basic units of structure but

  do not perform life functions.

• All organisms are composed of one or more cells, which are the basic units of structure

  and perform essential life functions.

• All organisms are composed of many cells that have basic units with unique structures

  and functions.

• All organisms are composed of one or more cells with the same shape and purpose

  but are not the basic units of structure.

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A group of two or more tissues working together to perform a specific function is called______.

• an organ

• a cell

• an organ system

• an organism

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The process by which an organism’s internal environment is kept stable in spite of changes in the external environment is called __________.

• healing

• homeostasis

• digestion

• respiration

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Human organ systems work together in many ways. Which statement accurately explains the relationship between two body systems?

• The excretory system regulates the temperature of the integumentary system.

• The skeletal system delivers nutrients absorbed by the endocrine system.

• The digestive system delivers oxygen absorbed by the respiratory system.

• The nervous system regulates the movement of the muscular system.

Which of the following organs aid in protection against pathogens, excretes waste products, and body temperature regulation?

• Skin

• Femur

• Bicep

• Stomach

Which makes up the integumentary system?

• A network of nerves

• White blood cells and antibodies

• The brain and spinal cord

• The skin, hair and nails

Inside cells, special molecules carry messages from the membrane to the nucleus. Which body system uses a similar process?

• Endocrine

• Lymphatic

• Excretory

• Integumentary

How does the skin help the body maintain homeostasis?

• The skin transports oxygen.

• The skin digests viruses.

• The skin sends messages to the brain.

• The skin stabilizes temperature.

What is the largest organ of the human body

• Brain

• Heart

• Skin

• Lungs

Which best explains why muscle is considered a tissue?

• It is connected to bones.

• It can move voluntarily or involuntarily.

• It interacts with several organ systems.

• It is a group of cells working together.

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