Human Body Systems Study Guide

Front

What is the primary function of the digestive system?

Back

The digestive system is responsible for breaking down food into nutrients that can be absorbed into the bloodstream.

Front

How does the cardiovascular system assist the digestive system?

Back

The cardiovascular system absorbs nutrients into the bloodstream via capillaries in the small intestine.

Front

Why is it important for blood to circulate throughout the body?

Back

Blood needs to circulate to all cells in the body to maintain homeostasis.

Front

Which systems are involved when reacting to a stimulus, such as a predator?

Back

The nervous, skeletal, muscular, respiratory, and cardiovascular systems are all involved.

Front

What role does the diaphragm play in the respiratory system?

Back

The diaphragm is a muscle that allows the lungs to inhale and exhale by expanding and contracting.

Front

What happens when the excretory system is not functioning properly?

Back

The cardiovascular system is directly affected because the blood is not cleaned properly by the kidneys.

Front

What is homeostasis?

Back

Homeostasis is the process by which the body maintains a stable internal environment despite changes in external conditions.

Front

Describe the relationship between the muscular and respiratory systems.

Back

The muscular system, through the diaphragm, facilitates breathing by allowing the lungs to expand and contract.

Front

What is the function of the kidneys in the excretory system?

Back

The kidneys filter waste products from the blood and regulate fluid balance.

Front

How do the nervous and muscular systems work together in response to a stimulus?

Back

The nervous system sends signals to the muscular system to initiate movement in response to a stimulus.