Physiology Exam II Material Flashcards Preview

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Flashcards in Physiology Exam II Material Deck (39):
1

The process of a white blood cell squeezing between cells to exit the blood vessel is called:

Emigration

2

What are the three phases of hemostasis?

Platelet plug formation, vascular spasm, clotting

3

When an artery or arteriole is damaged, its smooth muscle contracts producing:

A vascular spasm

4

What is the dominant method of carbon dioxide transport?

Dissolved in plasma as bicarbonate ions

5

Which of the following would NOT increase blood pressure

a. Increased blood volume
b. Increased sympathetic stimulation
c. Increased heart rate
d. Increased stroke volume
e. Decreased cardiac output

Decreased cardiac output

6

Which is NOT a major function of blood?

a. Transportation of nutrients
b. Regulation of blood pH
c. Protection against disease infection
d. Transportation of heat
e. Production of oxygen

Production of oxygen

7

Which of the following is not a component of blood?

a. Blood plasma
b. Formed elements
c. Carbon dioxide
d. Platelets
e. White blood cells

Carbon dioxide

8

Which of the following plasma proteins plays a role in blood clotting?

a. Albumins
b. Globulins
c. Fibrinogens
d. Prostaglandins
e. None of the above

Fibrinogens

9

The process by which formed elements of the blood develop is called:

Hemopoiesis

10

A megakaryoblast will form into a:

platelet

11

During hemopoiesis, some of the myeloid stem cells differentiate into:

Progenitor cells

12

According to the Frank-Starling law of the heart:

a. Increase in venous return increases the end-diastolic volume, which leads to increased stroke volume
b. When venous return decreases, stroke volume increases to compensate
c. The cardiac output cannot be varied, thereby maintaining circulatory stability
d. Parasympathetic nerve activity decreases end-diastolic volume

Increase in venous return increases the end-diastolic volume, which leads to increased stroke volume

13

This hormone stimulates proliferation of red blood cells in red bone marrow

EPO

14

Which of the following opposes the action of thromboxane A2?

a. Heparin
b. Fibrinogen
c. Plasmin
d. Antithrombin
e. Prostacyclin

Prostacyclin

15

Which of the following reduces blood loss?

a. Erythrocyte
b. Platelet
c. Lymphocyte
d. Basophil
e. Neutrophil

Platelet

16

Once this is formed, the intrinsic and extrinsic pathways are identical

Prothrombinase

17

When erythrocytes are destroyed, which of the following events occurs?

a. Iron is secreted into the bile
b. Globin portion of the molecule is broken down into amino acids
c. Heme is transported by transferrin
d. All of the above occurs
e. None of the above occurs

Globin portion of the molecule is broken down into amino acids

18

Which of the following clotting factors has the most to do with strengthening and stabilizing a blood clot?

a. Factor V
b. Factor VII
c. Factor XI
d. Factor XIII
e. Factor XIV

Factor XIII

19

20. Which of the following is a anticoagulant?

a. Heparin
b. Fibrinogen
c. Protease
d. Prostacyclin
e. Plasmin

heparin

20

an acute loss of blood is what type of anemia?

hemorrhagic anemia

21

The rupturing of an excessive number of circulating erythrocytes is what type of anemia?

hemolytic anemia

22

This condition is commonly known as a heart attack

Myocardial infarction

23

What happens in the last step of blood coagulation

Fibrinogen is converted to fibrin

24

a swishy murmur heard between the second and first heart sounds would be indicative of:

An insufficient (leaky) AV valve

25

Since fibrinogen is always present in the blood but the blood does not clot, ________ must normally be absent

thrombin

26

Which of the following would NOT increase blood pressure?

a. Increased blood volume
b. Increased sympathetic stimulation
c. Increased heart rate
d. Increased stroke volume
e. Decreased cardiac output

Decreased cardiac output

27

The second heart sound

a. Occurs when the AV valve closes
b. Signals the onset of ventricular relaxation
c. Signals the onset of atrial contraction
d. Is produced by blood rushing through the AV valve during diastole creating a turbulent flow

Signals the onset of ventricular relaxation

28

The second heart sound represents which of the below events?

a. Valvular stenosis
b. Semilunar valves opening
c. Atroventricular valves closing
d. Semilunar valves closing
e. Atrioventricular valves opening

Semilunar valves closing

29

Which of the below reduces heart rate?

a. Increased norepinephrine hormone
b. Increased thyroid hormone
c. Increased potassium levels
d. Increased calcium levels
e. Increased sympathetic stimulation

Increased potassium levels

30

Most of the carbon dioxide transported in the blood is transported as:

Bicarbonate ions

31

This hormone causes the development of megakaryoblasts

Thrombopoietin

32

The common endpoint of Stage 2 (common pathway) of both the intrinsic and extrinsic pathways of hemostasis is the:

Production (formation) of thrombin

33

When platelets come in contact with this substance in an injured vessel wall, it causes them to adhere and aggregate.

collagen

34

Substance released by platelets that cause more platelets to adhere

Thromboxane A2

35

A plasma protein activated by Factor X complex

Prothrombin

36

Third step in hemostasis

Blood coagulation

37

Released from injured tissue; activates extrinsic clotting pathway

thromboplastin

38

This agent is involved in the vascular spasm phase/stage of hemostasis

Thromboxane A2

39

If the end-diastolic volume were held constant, increased stroke volume could be accomplished by:

Increased sympathetic nerve activity to the heart