Human Body Systems

The respiratory system provides oxygen to the ________ for circulation throughout the body.

• digestive system

• cardiovascular/circulatory system

• excretory system

• skeletal system

Which system activates muscles?

• cardiovascular/circulatory system

• nervous system

• excretory system

• muscular system

White blood cells and antibodies are important parts of the _______.

• endocrine system

• nervous system

• excretory system

• immune system

What organ system includes the mouth, nose, esophagus, stomach, small intestines, large intestines, and other organs?

• respiratory system

• excretory system

• cardiovascular/circulatory system

• digestive system

Which system has cells and tissues that recognize and attack foreign substances in the body?

• Immune System

• Excretory System

• Nervous System

• Digestive System

Which system regulates the body’s activities?

• cardiovascular system

• nervous system

• excretory system

• muscular system

If Johnny goes to the doctor because he has a kidney stone and has trouble urinating, what organ system is not functioning properly?

• cardiovascular system

• nervous system

• excretory system

• muscular system

Nerves transmit impulses for the ____________.

• nervous system

• endocrine system

• excretory system

• muscular system

Running is an activity that causes the cells in the muscular system to use oxygen at a faster rate. Which system responds by delivering more oxygen to these cells?

• nervous system

• respiratory system

• skeletal system

• cardiovascular system

Which system absorbs oxygen from the air and releases carbon dioxide?

• cardiovascular system

• respiratory system

• muscular system

• skeletal system