Human Body Systems Study Guide

Skeletal

Protects internal organs and assists in locomotion/movement

Which two systems of the human body interact to maintain homeostasis by utilizing white blood cells against invaders?

immune and circulatory

Digestive

obtains nutrients for the body by breaking down food, absorbing water, and eliminating wastes.

What is one of the main functions of the endocrine system?

to control the secretion of hormones

What is the main function of the immune system?

to recognize and attack disease-causing organisms

What sequence correctly shows the path an oxygen molecule takes as it is inhaled into the body?

trachea → bronchi → bronchioles → alveoli → blood

What is the largest organ of the human body?

skin

How does the cardiovascular system interact with the respiratory system?

Blood transports oxygen from the lungs to other organs.

How does the muscular system interact with the digestive system?

Food is moved through the small intestine.

Michael almost gets into an accident in his car. How does his organ systems respond to this event?

His heart beats faster and his breathing rate increases.

The illustration shows one of the human body systems. What is one function that this body system performs?

It eliminates carbon dioxide gas.

What is the primary role of the cardiovascular system in maintaining the body?

It provides cells with nutrients and oxygen, while it removes waste.

Which statement best describes the result of the respiratory system interacting with the circulatory system?

Oxygen is delivered to the cells.

Reproductive

Responsible for producing offspring

Endocrine

Secretes hormones into the blood that control growth, metabolism, and stress response

The diagram shows the movement of chewed food from the mouth to the esophagus.

The food would go into the trachea and cause coughing.

Which statement best describes the result of the excretory system interacting with the circulatory system?

Wastes are filtered out of the blood.

The digestive system includes groups of tissues that absorb nutrients from food that has already been broken down. What is the best way to classify this group of tissues?

an organ

What is the function of the arteries?

carry blood away from the heart

What is the correct order for the levels of organization?

cell → tissues → organs → systems → organisms

What system chemically and mechanically breaks down food into simpler more absorbable nutrients?

digestive system

Which two systems work together to control all body activities?

endocrine and nervous

What structure connects bones together at a joint?

ligament

Excretory

maintains water and chemical balance by eliminating waste products.

Which of the following tasks is the primary function of the muscular system?

movement

Which of the following is a major function of the skin?

protection

Respiratory

removes carbon dioxide while supplying the blood with oxygen

Which system works continuously in all animal cells and involves the exchange of gases between the organism and its environment?

respiratory system

Which type of muscles are used when a person walks?

skeletal muscles

Which structure connects muscles to bones?

tendon

How does the skeletal system interact with the nervous system?

the skeletal system provides protection for the brain and spinal cord

Which of the following is a function of the spinal cord?

to act as a reflex center and relay center to and from the brain

What is the main function of the human reproductive system?

to allow offspring to be born