Skeletal and Muscular
Integumentary and Immune
Circulatory and Respiratory
Nervous and Endocrine
Digestive and Excretory
100

Tough bands of connective tissue that connect muscles to bones

What are tendons?

100

The largest organ in the human body

What is the skin?

100

The largest of the vessels, these carry oxygenated blood from heart

What are arteries? 

100

A substance that acts on certain target cells and tissues to produce a specific response

What is a hormone?

100

Watery liquid secreted into the mouth by glands, providing lubrication for chewing and swallowing, and aiding digestion

What is saliva?

200

This muscle type is developed for endurance (as opposed to sprinting)

What is slow-twitch muscle?

200

Long-living cells that were exposed to antigen that are ready to respond if body encounters the same pathogen

What are memory cells?

200

The mechanical movement of air into and out of your lungs

What is breathing?

200

A chemical that diffuses across a synapse and binds to the receptors of the dendrite of a neighboring neuron

What is a neurotransmitter?

200

This organ, also part of the respiratory system, secretes carbon dioxide from the body

What are the lungs?

300

This is where white blood cells and platelets are produced

What is bone marrow?

300

This is the outermost layer of skin

What is the epidermis?

300

Two large tubes that lead to the lungs

What are the bronchi?

300

The gland that secretes epinephrine, a hormone that controls the “fight, flight or freeze” response

What are the adrenal glands?

300

The organ that filters out wastes, water, and salts from the blood

What are the kidneys?

400

Muscles attached to bones by tendons which cause movement

What are skeletal muscles?

400

This is nature's way of providing us with active immunity

What is infection (getting sick)?

400

Found in your blood, these are important in forming blood clots

What are platelets?

400

An electrical charge travelling the length of a neuron

What is a nerve impulse?

400

The small sac-shaped organ beneath the liver, in which bile is stored after secretion by the liver and before release into the intestine

What is the gallbladder?

500

The joint with the widest range of motion, like the shoulder or hip

What is a ball and socket joint?

500

A protein secreted by virus-infected cells that stimulates nearby cells to produce antiviral proteins

What is an interferon?

500

Lung inflammation caused by infection, in which the air sacs fill with pus and may become solid

What is pneumonia? 

500

Secretes hormones that regulate body functions and other glands

What is the pituitary gland?

500

The involuntary constriction and relaxation of the muscles of the esophagus and intestines, creating wave-like movements that push the contents of the canal forward

What is peristalsis? 

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