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Human Body Basics Part IV Trivia Quiz

The fourth installment of basic human body facts, hopefully to educate and entertain.

A multiple-choice quiz by jstagamtome. Estimated time: 6 mins.

Author
jstagamtome

Time
6 mins

Type
Multiple Choice

Quiz #
305,842

Updated
Dec 03 21

# Qns
10

Difficulty
Difficult

Avg Score
5 / 10

Plays
2707

Awards
Top 35% Quiz

One at a Time - Single Page - Timed Game

Question 1 of 10

1. What is the primary function of the colon? Hint

to absorb nutrients from the food

to prevent bowel obstruction by peristalsis

to metabolize toxic waste

to reabsorb water from the intestines

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Question 2 of 10

2. What is the pia mater? Hint

the middle lining of the uterus

the gland which regulates the sleep/wake cycle

supporting tissue of the ovaries which sustains the eggs

One of three layers enveloping the brain and spinal cord

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Question 3 of 10

3. Which of the following organs does not produce hormones? Hint

heart

intestines

kidneys

spleen

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Question 4 of 10

4. Which substances are controlled by hormones having opposite effects on their blood levels? Hint

potassium and chloride

iron and oxygen

sodium and magnesium

glucose and calcium

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Question 5 of 10

5. Which organ is not accurately matched to its color? Hint

lungs-pink

spleen-purple

kidneys-green

liver-dark reddish brown

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Question 6 of 10

6. An increase in what aspect of the brain is associated with increased intelligence? Hint

weight

surface area

size

white matter content

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Question 7 of 10

7. Which vitamin requires binding with a substance produced by the stomach in order to be absorbed? Hint

B12

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Question 8 of 10

8. When light enters the eye, it passes through which sequence? Hint

cornea, jelly, liquid, lens, retina

cornea, jelly, lens, liquid, retina

cornea, liquid, lens, jelly, retina

cornea, lens, jelly, liquid, retina

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Question 9 of 10

9. Breathing requires conscious effort.

True

False

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Question 10 of 10

10. Which of the following is not true concerning blood? Hint

the plasma contains more potassium than sodium

platelets are smaller than red cells or white cells

the plasma contains proteins which create holes in bacterial walls

it is one of the three main compartments of body iron

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Quiz Answer Key and Fun Facts

1. What is the primary function of the colon?

Answer: to reabsorb water from the intestines

Although the colon absorbs some minerals and vitamins, the primary function is to absorb all but 200 milliliters of the 1500 milliliters of water that enters it on an average day.

2. What is the pia mater?

Answer: One of three layers enveloping the brain and spinal cord

Along with the dura and arachnoid, the pia mater protects the central nervous system. The pia mater is highly vascular and directly envelops the brain and spinal cord. Between the pia and the other 2 membranes is contained the cerebrospinal fluid. Inflammation of these membranes causes the disease known as meningitis.

3. Which of the following organs does not produce hormones?

Answer: spleen

The heart produces natriuretic hormone which controls blood pressure with exertion. The kidneys produce erythropoietin, which stimulates red blood cell production, and the intestinal lining cells produce a variety of hormones which are involved in digestion.

4. Which substances are controlled by hormones having opposite effects on their blood levels?

Answer: glucose and calcium

insulin lowers blood glucose levels, and glucagon raises them. Calcitonin lowers calcium levels, while parathyroid hormone raises them.

5. Which organ is not accurately matched to its color?

Answer: kidneys-green

The kidneys are reddish-brown, actually similar to a kidney bean.

6. An increase in what aspect of the brain is associated with increased intelligence?

Answer: surface area

The neurons are in the surface gray matter, and the more convoluted the fissures of the brain, the more surface area exists.

7. Which vitamin requires binding with a substance produced by the stomach in order to be absorbed?

Answer: B12

The absence of this "intrinsic factor" leads to the disease we call pernicious anemia.

8. When light enters the eye, it passes through which sequence?

Answer: cornea, liquid, lens, jelly, retina

The aqueous humor and vitreous humor are separated by the lens, which is shaped by ciliary muscles to accommodate our vision to various objects.

9. Breathing requires conscious effort.

Answer: False

That's why we continue to breathe if we pass out. It is not a drop in our oxygen level, but too long a pause in the rhythmic contraction of the respiratory muscles that triggers a breath. It is a too strong an impulse to overcome. Have you ever heard of someone committing suicide by holding their breath?

10. Which of the following is not true concerning blood?

Answer: the plasma contains more potassium than sodium

The sodium content of plasma is about 35 times that of potassium. Complement is a series of proteins that attach to bacterial cell walls and lyse them by punching holes in the cell wall. Red cells are one of the three main repositories of body iron, the other 2 being the bone marrow and liver. Platelets are about 2-4 microns in size and red cells are about 7 microns.

The most predominant white cell is about 12-15 microns

Source: Author jstagamtome

This quiz was reviewed by FunTrivia editor crisw before going online.
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