Human Body Systems

Which system functions primarily to coordinate the body’s response to changes in its internal and external environment?

• digestive system

• excretory system

• nervous system

• skeletal system

Which of the following is a component of the circulatory system?

• heart

• blood vessels

• blood

• all answers

The system that is responsible for the production of gametes is the

• excretory system

• reproductive system

• nervous system

• integumentary system

Muscle tissue functions to move 

• blood. 
• food in the digestive tract. 
• bones. 
• All Answers

The functions of the skin include 

• defense against microbes. 
• regulation of body temperature. 
• prevention of dehydration. 
• All Answers

The system that recognizes and attacks foreign substances is known as the 

• integumentary system 
• immune system 
• digestive system 
• nervous system 

The system that involves the skin as a primary structure is called __________________. 

• integumentary system 
• digestive system 
• muscular system 
• endocrine system 

Which system involves the mouth, pharynx and esophagus? 

• nervous system 
• excretory system 
• digestive system 
• reproductive system 

From the smallest functional units to the largest, the body is organized as follows: 

• cell, system, organ, tissue, body. 
• organ, cell, tissue, system, body. 
• system, organ, tissue, cell, body. 
• cell, tissue, organ, system, body. 

Which of the following systems is primarily involved with gas exchange? 

• respiratory system 
• excretory system 
• digestive system 
• skeletal system