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14 Exakte Antworten 11 Text Antworten 426 Multiple Choice Antworten
Fenster schliessen

5. The baroreceptors reflex causes:

A. Decrease in heart rate and in blood pressure

B. Increase in heart rate and in blood pressure

C. Decrease in heart rate and increase in blood pressure

D. Does not influence heart rate

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28. The increase in renin secretion by kidneys can be induced by:

A. Fall in arterial blood pressure

B. Increase in arterial blood pressure

C. Increase in body fluid volume

D. Blood pressure does not influence renin secretion

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  • 09.06.2019
    Vasopressin is produced in hypothalamus and secreted by pituitary
    d) none of the answers are correct
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22. Which of the following statements characterizes vasopressin:

A. Vasopressin is released by great vessels in to fall in blood pressure

B. Vasopressin is a hormone produced by pituitary gland in order to increase fluid reuptake from kidneys

C. Vasopressin is a hormone produced in hypothalamus in order to decrease in blood pressure and increase in fluid expulsion from kidneys

D. None of the answers is correct

Fenster schliessen

7. The chronic abnormal increase in blood pressure in 46 year old man may be caused by:

a. overactivity of ACE system

b. oversecretion of aldosterone by suprarenal glands

c. decrease in sympathetic activity

d. answer a and b are correct

e. none of the above mentioned answers are correct

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8. Increase in systolic blood pressure up to 190 mmHg as measured soon after very intensive physical exercise in a healthy volunteer is:

 

normal systolic is 120mmHg

a. pathological reaction

b. physiological reaction

c. related to decrease in cardiac output

d. related to increase in cardiac output

e. answer b and d are correct

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6. The overactivity of the vagal nerve will:

a. decrease release of electrical impulses from natural pacemaker (auto rhythmic cells)

b. not influence the heart rhytm

c. increase the heart rate

d. slow down the heart rate

e. answer a and d are correct

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Sudden decrease in systolic blood pressure because of peripheral vasodilation will cause:

a. decrease in breath rate and increase in heart rate

b. compensatory increase in cardiac output

c. unloading of baroreceptors

d. answer b and c are correct

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2. Isovolumic relaxation time is:

a. a part of heart systole

b. a part of heart diastole

c. the time from the closure of aortic valve to opening of mitral valve

e d. answer b and c are correct

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3. Stroke volume is dependent on:

a. fluid homeostasis

b. heart rate

c. contractility of heart muscle

d. Starling law

e. all ansers are correct

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4. Left ventricular filling pressure is dependent on:

a. left ventricular systolic and diastolic heart function

b. venous return

c. only on diastolic heart function

d. none of the above - mentioned answers is correct

e. answer a and b are correct

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5. Electrocardiography holter monitoring is used for:

a. detection of arhytmias

b. evaluation of phases of heart cycle

c. evalutation of heart valves

d. evaluation of heart muscle contractility

e. none of the above - mentioned answers are correct

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4. During relative refractory period:

a. excitability of a neuron is higher

b. excitability of a neuron doesn ́t change

c. a second action potential cannot be triggered

d. a higher than threshold stimulus is required to trigger an action potential

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3. The precence of myelin allows an axon to:

a. conduct more impulses more rapidly

b. produce more frequent action potentials

c. produce action potentials of larger amplitude

d. produce action potentials of longer duration

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2. What causes the depolarization phase of the action potential:

a. K leaving the cell through voltage-gated channels

b. K being pumped into the cell by the Na-K-ATPase

c. Na being pumped into the cell by the Na-K-ATPase

d. Na entering the cell through voltage-gated channels

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  • 12. Recording speed is 25 mm/s, R-R interval is 15 mm. What is the heart rate?

a. 50 bpm

b. 75 bpm

c. 100 bpm

d. 150 bpm

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11. In quadrant method the right axis deviation is:

a. • From 0’ to + 90’

b. From 0’ to -90’

c. From +90’ to +180’

d. From -90’ to +180’

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10. P-Q interval represents:

a. AV nodal delay

b. Depolarization and repolarization of atria

c. Transmission of depolarization through His bundle and its branches

d. All above are correct

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8. According to the Frank-Starling law of the heart, cardiac output is directly relate to the:

a. Initial length of the cardiac muscle fibers

b. EDV

c. Amount of blood returning to the heart

d. All the above are correct

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7. All the following statements concerning the conduction system of the heart are true EXCEPT that the:

a. Sino-atrial node is located in the junction of the right atrium and superior vena cava

b. Physiological pacemaker is located in the atrio-ventricular node

c. Bund of His is located on the top of ventricular septum

d. Intermodal pathways are located in the right atrium

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6. Contractile ventricular cells receive impulses directly from the:

a. Sino-atrial node

b. Bundle of His

c. Right and left bundle branches

d. Purkinje system

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1. Which of the structures below is characteristic only for cardiac muscle:

a. Z lines

b. Nucleus

c. Intercalated discs

d. Synapsis

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4. Absolute refractory period of contractile cells is a period when:

a. Cardiac muscle cannot be excited again

b. Cardiac muscle can be excited by a very strong stimulus

c. Fast sodium channels are closed

d. a and c are correct

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The rhythmicity of the normal cardiac cycle is dependent upon an irritable focus of cardiac tissue called the:

a. Bundle of His

b. Sino-atrial node

c. Atrio-ventricular node

d. b and c are correct

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2. The resistance in bronchi increases:

A. During expiration

B. In tachypnoe (increase in breath rate)

C. In obstructive disease

D. All of the above mentioned answers are correct

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3. During inspiration the intrapleural pressure is:

A. More positive

B. Equals zero

C. More negative

D. Remains unchanged

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5. Increased activity of vagal nerve on heart has:

A. Positive batmotropic effect

B. Positive inotropic effect

C. Positive dromotropic effect

D. Negative chronotropic effect

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5) Smooth muscle is present in the walls of

A) muscular arteries only.

B) arteries only.

C) veins only.

D) all vessel types except capillaries.

E) all vessel types.

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6) The highly branched contractile cells that regulate capillary permeability are called

A) pericytes.

B) podocytes.

C) epitheliocytes.

C) epitheliocytes.

E) endothelial cells.

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8)  The only blood vessels whose walls permit exchange between the blood and the surrounding interstitial fluids are the

A) arterioles.

B) capillaries.

C) venules.

D) arterioles and capillaries.

E) venules and capillaries.

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  1. 10)  Angiostatin and endostatin may be useful in the treatment of

A) hypertension.

B) cancer.

C) hypotension.

D) vasovagal syncope.

E) myocardial infarction.