Q: Which of the following equations correctly represents the calculation of hematocrit?

$$\text{Hematocrit} = \frac{\text{Volume of RBCs}}{\text{Total Blood Volume}} \times 100$$

Question 1

Which of the following is NOT a primary function of blood as described in Chapter 17?

Accepted Answer

Producing hormones for endocrine signaling

Question 2

A blood sample is centrifuged and separates into three layers. What does the buffy coat contain?

Accepted Answer

Leukocytes and platelets

Question 3

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

Accepted Answer

Albumin

Question 4

A patient presents with chronic fatigue, pallor, and shortness of breath. Laboratory tests reveal a low hematocrit and low hemoglobin. Which condition is most likely?

Accepted Answer

Anemia

Question 5

Which of the following best describes the structure of hemoglobin?

Accepted Answer

Four polypeptide chains, each with a heme group containing an iron ion

Question 6

If a person moves to a high altitude, which physiological response is expected regarding erythropoiesis?

Accepted Answer

Increased erythropoietin production

Question 7

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

Accepted Answer

Vitamin K

Question 8

A patient with sickle-cell anemia is likely to experience which of the following complications?

Accepted Answer

Blockage of small blood vessels due to abnormally shaped erythrocytes

Question 9

Which of the following equations correctly represents the calculation of hematocrit?

Accepted Answer

$$	ext{Hematocrit} = \frac{	ext{Volume of RBCs}}{	ext{Total Blood Volume}} 	imes 100$$

Question 10

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

Accepted Answer

Coagulation

Question 11

Which leukocyte is most abundant in normal blood and is primarily responsible for phagocytizing bacteria?

Accepted Answer

Neutrophil

Question 12

A patient is given warfarin after a heart procedure. What is the primary mechanism by which warfarin prevents clot formation?

Accepted Answer

Interfering with vitamin K action

Question 13

Which of the following best explains why platelets are not considered true cells?

Accepted Answer

They lack nuclei and are cell fragments

Question 14

Which process describes the removal of a blood clot after tissue repair is complete?

Accepted Answer

Fibrinolysis

Question 15

A patient with polycythemia vera is at increased risk for which of the following complications?

Accepted Answer

Sluggish blood flow and clot formation due to increased blood viscosity

Question 16

Which of the following is a correct sequence of events in the intrinsic pathway of coagulation?

Accepted Answer

Activation of factor XII → Activation of factor X → Formation of prothrombin activator

Question 17

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

Accepted Answer

Acting as a blood buffer and maintaining osmotic pressure

Question 18

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 19

Which of the following best describes the role of erythropoietin (EPO) in erythropoiesis?

Accepted Answer

Promotes differentiation of myeloid stem cells into erythrocytes

Question 20

Which equation best represents the relationship between blood viscosity and hematocrit?

Accepted Answer

$$	ext{Viscosity} \propto 	ext{Hematocrit}$$

Blood: Structure, Function, and Components (Anatomy & Physiology Chapter 17 Study Notes)

Guida di studio - Domande di pratica

Study guide - Flashcard