systems
functions
anatomy
organs
random facts
100

Which system breaks down and absorbs food?

The digestive system

100

What is the function of the nervous system?

sends and receives messages throughout the body 

100

What system does the heart belong to?

The circulatory system

100

What organ digests food and waste?

The small intestine

100

How long is the small intestine if you stretch it out?

22 feet long

200

Which system primary function is movement?

The muscular system

200

What is the function of the skeletal system?

Provide support and enables movement 

200

What system do the kidneys belong to?

The excretory system

200

What organ protects the body?

Skin

200

How many bones does the human skeleton have?

206

300

Which system transports blood throughout the whole body?

The circulatory system

300

What is the function of the excretory system?

maintains homeostasis and removes waste products

300

What system do the ovaries belong to?

The reproductive system

300

What organ maintains fluid balance?

Lymph nodes

300

About how many muscles does the human body have

600

400

Which system circulates oxygen and carbon dioxide throughout the body?

The respiratory system

400

What is the function of the endocrine system?

Regulates body functions and releases hormones

400

What system does the skin belong to?

The integumentary system

400

What organ provides movement to the body?

Muscles

400

Around how many times a day does the heart pump?

100,000 times a day

500

Which system maintains fluid balance and supports the immune system?

Lymphatic system

500

What is the function of the integumentary system?

Protects the body and regulates temperature 

500

What system do the glands belong to?

The endocrine system

500

What organ circulates oxygen and carbon dioxide?

Lungs 

500

What is the largest organ in the body?

The skin