Cardiovascular System
Respiratory System
Digestive System
Urinary System
Integumentary System
100

This blood vessel carries deoxygenated blood from the heart to the lungs.

What is the pulmonary artery?

100

This is what you are doing when the muscles contract.

What is inhaling?

100

These tiny fingerlike projections absorb nutrients in the small intestine.

What are villi?

100

This is the function of the kidney.

What is to filter blood and produce urine?

100

This tough structure protects the tips of fingers and toes.

What is the nail?

200

This large vein brings deoxygenated blood into the right atrium of the heart.

What is the vena cava?

200

These are tiny air sacs where gas exchange occurs.

What are alveoli?

200

This substance is a mixture of gastric juices and partially digested food.

What is chyme?

200

This is the correct path urine takes from the nephron to the outside of the body.

What is collecting duct → minor calyx → major calyx → ureter → bladder → urethra?

200

This small muscle contracts to produce goosebumps.

What is the arrector pili muscle?

300

Blood returns oxygenated from the lungs to the heart via this vessel.

What is the pulmonary vein?

300

This structure is also known as the windpipe.

What is the trachea?

300

This muscular action pushes food through the digestive tract.

What is peristalsis?

300

These cone-shaped structures make up the renal medulla and are part of the kidney's filtering system.

What is the renal pyramid?

300

This layer of the skin anchors the skin to the body.

What is hypodermis?

400

This structure pumps oxygenated blood out through the aorta.

What is the left ventricle?

400

These muscles help facilitate breathing.

What are the intercostal muscles and the diaphragm?

400

This term describes a round ball of chewed and moistened food.

What is a bolus?

400

This funnel-shaped structure collects urine from the minor calyces before it moves to the ureter.

What is the major calyx?

400

This gland secretes sebum to lubricate the skin and inhibit bacterial growth.

What is the skin oil gland?

500

Blood flows from the right atrium into this chamber.

What is the right ventricle?

500

The nasal cavity performs this function when air is inhaled.

What is warms and moistens the air?

500

These three organs are considered accessory organs of digestion.

What are the liver, pancreas, and gallbladder?

500

These two major blood vessels enter and exit the kidney, regulating blood filtration.

What are the renal artery and renal vein?

500

This is the protein found in the epidermis that makes it waterproof.

What is keratin?

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