FREE PHYSIOLOGY AND STUDY GAMES ABOUT WEEK 10

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FREE PHYSIOLOGY AND STUDY GAMES ABOUT WEEK 10

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -29 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: _____, a natural constituent of blood, acts as an antithrombin and prevents clots from forming in vessels.

Answer:

Heparin Question 2: A hematocrit of 56% would be an indication of:

Answer:

Polycythemia Question 3: In the extrinsic pathway of stage 1 of the clotting mechanism, chemicals released from damaged tissues trigger the cascade of events that ultimately result in the formation of

Answer:

prothrombin activator.

Question 4: The physiological mechanism that dissolves clots is known as

Answer:

Fibrinolysis.

Question 5: All of the following are components critical to coagulation except

Answer:

none of the above; all of these components are critical to coagulation

Question 6: Which are the two baroreceptors that are located near the heart?

Answer:

aortic baroreceptors and carotid baroreceptors Question 7: The vagus is said to act as a "brake" on the heart. This situation is called

Answer:

vagal inhibition Question 8: All of the following are true statements except:

Answer:

both atria receive their blood supply from branches of the right and left coronary arteries.Question 9: The term used to describe the collection of mechanisms that influence the

circulation of blood is:

Answer:

Hemodynamics.

Question 10: A decrease in the amount of white blood cells is called

Answer:

Leukopenia Question 11: Factors that affect the strength of myocardial contraction are called

Answer:

inotropic factors Question 12: Erythrocytes begin their maturation sequence in red bone marrow from nucleated

cells known as:

Answer:

hematopoietic stem cells.

Question 13: Which of the following is not true of ventricles?

Answer:

They are the pumping chambers of the heart, The myocardium of the ventricles is thicker than that of the atria, and The myocardium of the left ventricle is thicker than that of the right ventricle.Question 14: _____ is used to determine the volume percentage of red blood cells in whole blood.

Answer:

Hematocrit Question 15: Blood viscosity stems mainly from the red blood cells but also partly from the _____ in blood.

Answer:

protein molecules present Question 16: A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is erythropoietin cardiac output is determined by

Answer:

stroke volume and heart rate Question 17: The localized pressure gradient needed to maintain blood flow in a tissue is called

Answer:

perfusion pressure.Question 18: Blood volume per kilogram of body weight varies inversely with:

Answer:

body fat Question 19: Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of

Answer:

vasodilation

Question 20: Blood pressure is measured with the aid of an apparatus known as a(n)

Answer:

Sphygmomanometer.Question 21: Which of the following is(are) involved in determining a person's total blood volume?

Answer:

Age, body type, and sex Question 22: Neutrophils are highly mobile and phagocytic. They migrate out of blood vessels and into tissue spaces. This process is called

Answer:

Diapedesis Question 23: What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium?

Answer:

Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium.Question 24: The difference between systolic pressure and diastolic pressure is called

Answer:

pulse pressure Question 25: The mechanisms of which three hormones work together to regulate blood volume?

Answer:

aldosterone, ANH, and ADH

Question 26: The term blood type refers to the type of blood cell

Answer:

Antigen