Q: What is the correct formula for calculating hematocrit ($$Hct) $$given the volume of red blood cells ($$V_{RBC}) $$and total blood volume ($$V_{total}$$)?

$$Hct = \frac{V_{RBC}}{V_{total}} \times 100$$

Question 1

Which of the following is NOT a primary function of blood?

Accepted Answer

Producing hormones for endocrine organs

Question 2

A blood sample is centrifuged and yields three layers. What is the correct order from top to bottom?

Accepted Answer

Plasma, buffy coat, erythrocytes

Question 3

Which plasma protein is most abundant and primarily responsible for maintaining osmotic pressure?

Accepted Answer

Albumin

Question 4

A patient has a hematocrit of 60%. What condition might this indicate?

Accepted Answer

Polycythemia

Question 5

Which of the following best describes the role of erythrocytes?

Accepted Answer

Transport respiratory gases

Question 6

What is the correct formula for calculating hematocrit ($$Hct) $$given the volume of red blood cells ($$V_{RBC}) $$and total blood volume ($$V_{total}$$)?

Accepted Answer

$$Hct = \frac{V_{RBC}}{V_{total}} 	imes 100$$

Question 7

Which of the following is a consequence of excessive erythrocyte destruction?

Accepted Answer

Hemolytic anemia

Question 8

A patient with chronic blood loss from a bleeding ulcer is most likely to develop which type of anemia?

Accepted Answer

Iron-deficiency anemia

Question 9

Which vitamin is essential for the synthesis of four clotting factors in the coagulation cascade?

Accepted Answer

Vitamin K

Question 10

During hemostasis, which step involves the conversion of fibrinogen to fibrin?

Accepted Answer

Coagulation

Question 11

Which of the following is a correct description of the role of platelets?

Accepted Answer

They form temporary plugs to seal breaks in blood vessels

Question 12

Which pathway in the coagulation cascade is triggered by tissue factor (TF) and is faster?

Accepted Answer

Extrinsic pathway

Question 13

A patient with a deficiency in von Willebrand factor would most likely have problems with which step of hemostasis?

Accepted Answer

Platelet plug formation

Question 14

Which of the following is a function of albumin in blood plasma?

Accepted Answer

Acts as a blood buffer and maintains osmotic pressure

Question 15

Which equation correctly represents the reversible binding of oxygen to hemoglobin ($$Hb$$)?

Accepted Answer

$$Hb + O_2$ \rightleftharpoons $$HbO_2$$

Question 16

Which of the following is a correct statement about leukocytes?

Accepted Answer

They are complete cells and defend against disease

Question 17

Which condition is characterized by a clot that develops and persists in an unbroken blood vessel?

Accepted Answer

Thrombus

Question 18

Which of the following drugs acts as an antiprostaglandin to inhibit platelet aggregation?

Accepted Answer

Aspirin

Question 19

A patient at high altitude develops secondary polycythemia. What is the physiological reason for this?

Accepted Answer

Increased EPO production due to low oxygen

Question 20

Which process removes clots after tissue repair is complete?

Accepted Answer

Fibrinolysis

Blood: Structure, Functions, and Components (Chapter 17 Study Notes)

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