Q: Which of the following is a correct multi-step sequence in the coagulation cascade starting from prothrombin activator?

$$\text{Prothrombin activator} \rightarrow \text{Thrombin} \rightarrow \text{Fibrinogen} \rightarrow \text{Fibrin}$$

Question 1

Which of the following best explains why blood is classified as a connective tissue?

Accepted Answer

Because it has a liquid matrix and shares embryonic origin with other connective tissues.

Question 2

A patient presents with a blood pH of 7.20. Which blood function is most directly compromised, and which plasma component is primarily responsible for correcting this imbalance?

Accepted Answer

Regulation; albumin

Question 3

Which of the following statements about erythrocytes is correct?

Accepted Answer

Their biconcave shape increases surface area for gas exchange.

Question 4

A laboratory test shows a patient has a hemoglobin molecule with only three functional heme groups. What is the maximum number of oxygen molecules this hemoglobin can carry?

Accepted Answer

$$3$$

Question 5

Which of the following best describes the sequence of erythropoiesis from stem cell to mature erythrocyte?

Accepted Answer

Hematopoietic stem cell → proerythroblast → reticulocyte → erythrocyte

Question 6

Which plasma protein is most responsible for maintaining osmotic pressure and acts as a blood buffer?

Accepted Answer

Albumin

Question 7

A patient with iron-deficiency anemia is most likely to have which of the following symptoms and why?

Accepted Answer

Fatigue due to decreased oxygen-carrying capacity of blood

Question 8

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

Accepted Answer

Neutrophil

Question 9

During hemostasis, which step involves the conversion of soluble fibrinogen into insoluble fibrin strands?

Accepted Answer

Coagulation

Question 10

A patient’s blood sample is placed in a glass test tube and begins to clot. Which pathway is primarily activated and what is the trigger?

Accepted Answer

Intrinsic pathway; negatively charged glass surface

Question 11

Which of the following best describes the role of plasmin in the process of fibrinolysis?

Accepted Answer

It digests fibrin, dissolving the clot.

Question 12

Which mechanism prevents platelets from adhering to healthy, uninjured blood vessel walls?

Accepted Answer

Secretion of nitric oxide and prostacyclin by endothelial cells

Question 13

A patient with a genetic deficiency in antithrombin III would be at increased risk for which of the following?

Accepted Answer

Excessive clot formation

Question 14

Which of the following best describes the developmental sequence of platelets?

Accepted Answer

Hematopoietic stem cell → megakaryoblast → megakaryocyte → platelets

Question 15

Which of the following is a correct multi-step sequence in the coagulation cascade starting from prothrombin activator?

Accepted Answer

$$	ext{Prothrombin activator} ightarrow 	ext{Thrombin} ightarrow 	ext{Fibrinogen} ightarrow 	ext{Fibrin}$$

Question 16

Which of the following is NOT a function of blood?

Accepted Answer

Synthesizing hormones for endocrine organs

Question 17

A patient with hemolytic anemia is experiencing which of the following?

Accepted Answer

Excessive destruction of red blood cells

Question 18

Which of the following best explains why erythrocytes lack mitochondria?

Accepted Answer

To prevent consumption of the oxygen they transport

Question 19

Which of the following triggers the extrinsic pathway of coagulation?

Accepted Answer

Exposure to tissue factor (factor III) from damaged tissue

Question 20

Which of the following best describes the role of swift removal and dilution of clotting factors in the blood?

Accepted Answer

It limits the size of the clot and prevents excessive clotting.

Anatomy & Physiology: Blood (Chapter 17) Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard