CVS || Physio | L 6+7+8+9

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لجنة الطب والجراحة | الفريق الاكاديمي

16. Which of the following is not true? Select one:
*

1 point

a. As you start to move from arterioles to capillaries the cross-sectional area and velocity are going to start rising

b. Increase the preload would increase the stroke volume and thus the perfusion blood pressure

C. Turbulent blood flow observed in both pathological and physiological conditions

d. Hypertension would increase afterload and thus decrease stroke volume

e. Polycythemia would decrease perfusion blood pressure

*Arterioles are?

*

1 point

Elastic

Capacitant

. Resistance vessels

Exchange

Vasoconstriction of arteriole cause:

1 point

A) Increase total blood pressure

B) Decrease total blood pressure

C) Increase blood flow

D) Not change in blood flow

E) Not change in total blood pressure

7) all of the following are indirect with cross sectional area except:

1 point

A) Blood flow

B) peripheral resistance

C) radius of a blood vessel

D) velocity

E) blood pressure

*Precapillary sphincter would open and shut based on?

*

1 point

CO2 excess

Toxin accumulation

.O2availability

pH of blood

Blood velocity

المحاضرة التاسعة :

Which of the following is not true?
Select one:

*

1 point

a. Perfusion pressure is equal the Mean arterial blood pressure minus Central Venus pressure

b. Systolic pressure on average is 120mmHg

c. Diastolic pressure on average is 80mmlHg

d. If a patient's blood pressure is 83 mm Hg/SO mm Hg. his MAP would be 50 mm Ha

e. Mean arterial blood pressure determines the actual pressure by which will propel the substances out of the capillary beds into the tissues

L8
All the following produces coronary Vasodilatation. Except? Select one:
*

1 point

a. Renal ischemia

b. Adenosine

. C. EDRF.

d. Histamine.

e. Hypoxia.

Decrease total peripheral resistance?

1 point

resting state

Atherosclerotic arteries

Muscular exercise

*What is not true about mean arterial blood pressure?

*

1 point

a. Equals systolic pressure minus diastolic pressure

B. Resistance is the main determinant

C. Pressure gradiant is important for blood flow

D. Atherosclerosis increases mean arterial blood pressure

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