The Respiratory System
The Digestive System
The Skeletal System
The Urinary System
The Integumentary System
100

This structure, also known as the voice box, contains the vocal cords.

What is the larynx?

100

Most nutrient absorption occurs in this part of the digestive system.

What is the small intestine?

100

This type of joint, found in the shoulder and hip, allows for the greatest range of motion.

What is a ball-and-socket joint?

100

This organ stores urine before it is excreted from the body.

What is the bladder?

100

This layer of skin contains sweat glands, hair follicles, and blood vessels.

What is the dermis?

200

These tiny air sacs in the lungs are where gas exchange occurs.

What are alveoli?

200

This organ is responsible for producing bile, which helps digest fats.

What is the liver?

200

These are the two main minerals stored in bones.

What are calcium and phosphorus?

200

These organs are responsible for filtering waste from the blood to form urine.

What are the kidneys?

200

This protein, found in the skin, helps with waterproofing and protection.

What is keratin?

300

This structure connects the throat to the lungs.

What is the trachea?

300

This structure stores bile produced by the liver.

What is the gallbladder?

300

These are the small, individual units that make up the backbone.

What are vertebrae?

300

This liquid waste is excreted by the kidneys.

What is urine?

300

These structures, found in the skin, produce oil to keep the skin moisturized.

What are sebaceous glands?

400

This dome-shaped muscle plays a key role in breathing.

What is the diaphragm?

400

This long, coiled tube absorbs water and forms waste into solid matter.

What is the large intestine?

400

This group of bones protects the heart and lungs.

What are the ribs?

400

This tube carries urine from the bladder to be excreted outside the body.

What is the urethra?

400

This pigment gives skin its color and provides protection from UV rays.

What is melanin?

500

This flap of cartilage prevents food from entering the windpipe during swallowing.

What is the epiglottis?

500

This structure, also called the food pipe, carries food from the mouth to the stomach.

What is the esophagus?

500

This type of joint allows for rotation, such as in the neck.

What is a pivot joint?

500

These tiny structures in the kidneys filter blood and remove waste

What are nephrons?

500

This outermost layer of skin is made up of dead cells and provides a barrier to the environment.

What is the epidermis?