Body Systems Review

The endocrine system produces chemicals that affect organ functions. These chemicals are called

• nutrients
• hormones
• microbes
• wastes

Nutrients from digested food enter the blood stream through the process of

• absorption
• respiration
• elimination
• secretion

The kidneys, which remove dissolved wastes from the blood, are organs of the

• endocrine system
• excretory system
• skeletal system
• nervous system

What is the main function of the circulatory system?

• secrete enzymes
• digest proteins
• produce hormones
• transport materials

What is the largest organ of the body?

• stomach
• lung
• skin
• brain

Which function of the skeletal system will help the lungs keep from getting damaged if you fall?

• movement
• protection
• storage
• support

Which of the following is NOT one of the five human senses?

• hearing
• reflex
• touch
• taste

The main function of the muscle is to _____.

• digest food
• move bones and body parts
• regulate body temperature
• support the body

The main function of the human digestive system is to

• break down foods for absorption into the blood
• exchange oxygen and carbon dioxide in the lungs
• release energy from sugars within the cells
• carry nutrients to all parts of the body

What is the main job of the nervous system?

• break down foods for absorption into the blood
• exchange oxygen and carbon dioxide in the lungs
• gathering, processing and responding to information
• pumping blood through the heart and around the rest of the body