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Which of the following plasma proteins is responsible for colloid osmotic pressure?

A.

Prothrombin

B.

Globulins

C.

Fibrinogen

D.

Albumin

Answer and Explanation

The Correct Answer is D

a. Prothrombin: This is a protein involved in blood clotting, not in maintaining colloid osmotic pressure.

b. Globulins: These are involved in immune responses and transportation of substances but are not the primary proteins for colloid osmotic pressure.

c. Fibrinogen: This is a clotting factor that helps in blood coagulation, not in colloid osmotic pressure.

d. Albumin: Albumin is the main plasma protein responsible for maintaining colloid osmotic pressure, which helps to keep fluid within the blood vessels.


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Related Questions

Correct Answer is D

Explanation

a. I, IV, and VII: Cranial nerve I (Olfactory) is involved in the sense of smell, not eye movement. Cranial nerve VII (Facial) controls facial expressions, not eye movement. Cranial nerve IV (Trochlear) does control one of the extraocular muscles.

b. V and V: This is not a valid option, as it repeats the same cranial nerve. Cranial nerve V (Trigeminal) is involved in facial sensation and chewing, not eye movement.

c. IV and V: Cranial nerve IV (Trochlear) is involved in eye movement, but cranial nerve V (Trigeminal) is not.

d. III, IV, and VI: Correct. Cranial nerve III (Oculomotor), cranial nerve IV (Trochlear), and cranial nerve VI (Abducens) all control the extraocular muscles responsible for eye movements.

Correct Answer is A

Explanation

a. Smooth: Correct. Smooth muscle cells in the walls of blood vessels regulate their diameter through contraction and relaxation.

b. Striated: Striated muscles, also known as skeletal muscles, are involved in voluntary movements and are not responsible for regulating blood vessel diameter.

c. Cardiac: Cardiac muscle is found in the heart and is responsible for pumping blood, not regulating blood vessel diameter.

d. Skeletal: Skeletal muscles control voluntary movements and are not involved in regulating blood vessel diameter.

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