Question

QUESTION 19

Platelets contain

		a nucleus and all of the organelles
		a rough endoplasmic reticulum to synthesize all of the clotting factors
		actin and myosin to contract during clot retraction

QUESTION 20

Tissue plasminogen activator might be given to a patient who was suffering from _____.

		a stroke due to a blood clot in the brain
		excessive bleeding and easy bruising due to thrombocytopenia
		an inability to synthesize one of the clotting factors due to a genetic defect
		liver failure and was about to undergo surgery

QUESTION 21

Which of the following is true about blood plasma?

		It is the same as serum but without the clotting proteins.
		The main protein component is hemoglobin.
		It is about 90% water.

QUESTION 22

Blood reticulocyte counts provide information regarding ________.

		rate of erythrocyte formation
		rate of platelet formation
		clotting ability of the blood
		WBC ability to defend the body against disease

QUESTION 23

What is the average normal pH range of blood?

		8.35-8.45
		7.75-7.85
		7.35-7.45
		6.25-6.45

Answer 1

-Question.19

Ans.

The first option is wrong. Platelet is a cell fragments so it has no nucleus and it doesn't contain all the cell organelles.

The second option is also incorrect because it can not synthesise all the clotting factors ,those clotting factors are synthesized in the liver.

The third option is correct. It contains microfilaments containing actin and myosin like in muscle to contract during clot retraction.

So the third option is the right option.

-Question. 20. Tissue plasminogen activator might be given to a patient who was suffering from ....?

Ans. The correct answer should be option (a) a stroke due to blood clot in the brain.

Explanation:- tissue plasminogen activator is a protein involved in the break down of blood clots.

- So if the patient has stroke due to blood clot in the the brain tissue plasminogen activator will help to resolve the clot.

Question 21

Ans. The answer should be option (c) it is about 90% water.

Explanation:- the first option is incorrect because plasma contains the clotting factors.

The second option is also incorrect because it is devoid of blood cell, also red blood cells so doesn't contains haemoglobin.

Question 22.

Ans. The answer should be option (a) rate of erythrocytes formation.

Explanation :- Reticulocyte count is a blood test that measures how fast red blood cells called Reticulocyte are formed from the bone marrow and released into the blood.

Question 23.

Ans. The correct option is (c) 7.35- 7.45

Explanation. The blood pH is tightly regulated between 7.35 to 7.45

Hope you got your answer. Thanks.