1. An individual skeletal muscle may be made up of hundreds of:
a. Microfilament
b. Sarcolemma
c. Myofibrils
d. Muscles fiber
Answer: d. Muscles fiber
2. A sarcomere is the region of a myofibril between two successive:
a. M-lines
b. L-bonds
c. Z-lines
d. T-tubules
Answer: c. Z-lines
3. Calcium ion released during a muscle fiber contraction attached with:
a. Myosin
b. Tropomyosin
c. ActIn
d. Troponin
Answer: d. Troponin
4. A muscle contraction from the accumulation of lactic acid and ionic imbalance is:
a. Tetany cramp
b. Muscle fatigue
c. Tetanus
d. None of these
Answer: b. Muscle fatigue
5. The pigment that stores oxygen in muscles is:
a. Globular
b. Hemoglobin
c. Myosin
d. Myoglobin
Answer: d. Myoglobin
6. Olfactory nerve is related to?
a. Sight
b. Smell
c. Movement
d. Facial sensation
Answer: b. Smell
7. The optic nerve is the second cranial nerve responsible for:
a. Hearing
b. Smell
c. Vision
d. Taste
Answer: c. Vision
Recommended: Human Physiology Practice Test
8. The other name for “Adam’s Apple” is:
a. Thyroid cartilage
b. Larynx
c. Nasopharynx
d. Nasal cavity
Answer: a. Thyroid cartilage
9. Which of the following is the largest part of the human brain?
a. Cerebrum
b. Cerebellum
c. Midbrain
d. Medulla oblongata
Answer: a. Cerebrum
10. Which of the following is corrected by using a cylindrical lens?
a. Cataract
b. Astigmatism
c. Hypermetropia
d. Myopia
Answer: b. Astigmatism
11. Xerophthalmia in children and nyctalopia in adults is caused by the deficiency of which vitamin?
a. Vitamin B
b. Vitamin B2
c. Vitamin K
d. Vitamin A
Answer: d. Vitamin A
12. Functional units of food absorption are:
a. Red blood cells
b. Brunner’s glands
c. Small intestine
d. Villi
Answer: d. Villi
13. Where are your parotid glands located?
a. Below the stomach
b. Behind and above the pancreas
c. Below and in front of the ear canal
d. Underneath the armpits
Answer: c. Below and in front of the ear canal
14. The maximum amount of CO2 in the human body is transported as:
a. Bicarbonate
b. Carbide
c. Amylase
d. None of these
Answer: a. Bicarbonate
15. Book lungs are respiratory organs of:
a. Earthworms
b. Reptiles
c. Arachnids
d. Aves
Answer: c. Arachnids
16. Mountain sickness is caused by:
a. Excess CO2 in blood
b. Decreased CO2 in air
c. Decreased partial pressure of oxygen
d. Decreased efficiency of hemoglobin
Answer: c. Decreased partial pressure of oxygen
17. Emphysema is characterized by:
a. Loss of peripheral vision
b. Shortness of breath
c. Chronic Diarrhea
d. Slow clotting from wounds
Answer: b. Shortness of breath
18. Jellyfish breathe through:
a. Book lungs
b. Diffusion
c. Gills
d. None of these
Answer: b. Diffusion
19. The main function of cerebrospinal fluid is:
a. Protect the brain
b. Provide nutrients to the surrounding tissues
c. Keeping the central nervous system moist
d. All of these
Answer: d. All of these
20. The lungs are protected by:
a. Sternum
b. Rib cage
c. Backbone
d. All of these
Answer: d. All of these
