The human body quiz

Question 1

The body’s delivery service never clocks off: which organ does the pumping, and what does it send around the body?

Accepted Answer

The heart Blood Around the body

Question 2

Spot a friend across the room: which body part makes that possible, and which sense does it give you?

Accepted Answer

The eyes Sight or vision

Question 3

A bright light suddenly hits your eyes: what happens to your pupils, and what automatic response makes it happen?

Accepted Answer

The pupils get smaller or constrict The response is the pupillary light reflex It reduces the amount of light entering the eyes

Question 4

What pigment gives skin much of its color, and which skin cells produce it to help shield skin from sunlight?

Accepted Answer

Melanin gives skin much of its color Melanocytes produce melanin Melanin helps protect skin from ultraviolet sunlight

Question 5

A tightrope walker needs steady balance: which brain region helps, and what kind of body action does it coordinate?

Accepted Answer

The cerebellum helps with balance The cerebellum coordinates movement It helps make movements smooth and controlled

Question 6

When cold gives you goosebumps, what tiny muscles tighten, and what did that reaction help our hairier ancestors do?

Accepted Answer

Tiny muscles attached to hair follicles contract The hairs stand up Raised hairs helped trap a layer of warm air

Question 7

Inside the kidneys, what are the tiny filtering units called, and what paired tubes carry urine toward the bladder?

Accepted Answer

The filtering units are nephrons. The tubes are ureters.

Question 8

The middle ear has three tiny bone links—what is the name of each one?

Accepted Answer

The malleus is one middle-ear bone. The incus is one middle-ear bone. The stapes is one middle-ear bone.

The questions