anatomy blood pressure

44問 • 2年前

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_____force (energy) with which blood is pushed against the walls of blood vessels and circulated throughout the body when the heart contracts. It is measured in _____

blood pressure, millimeters of mercury (mmHg).

three blood pressures

arterial, venous and capillary blood pressures

is most frequently determined in clinical situation

arterial blood pressure

The capillary pressure is lower than ___

arterial pressure

venous pressure is lower than

capillary pressure

It is highest in the __ since this great vessel is closest to the powerful left ventricular pump.

aorta

As blood flows away from the heart, there is progressive ___ in the pressure in the arterial tree.

decrease

Blood pressure is much ____ in the long systemic arteries than it is in the short pulmonary circuit,

higher

the farther the blood flows from its pressure source, the lower its ____ becomes

pressure

- the capillary pressure is ___ than the arterial pressure while the venous pressure is __ than the capillary pressure

lower,lower

equal to the product of blood flow and resistance

blood pressure

blood pressure formula

Blood Pressure = Blood Flow X Resistance

where is the arterial blood pressure high

in aorta

ventricle that pump theblood to aorta

left venrticle

As the blood flows away from the heart, there is a progressive decrease in the pressure in the

arterial tree

which is generated during or systole of the ventricles,

systolic pressure

which is that maintained by the recoil of stretched tissue in arterial walls during ventricular relaxation or diastole

diastolic pressure

systemic arteries, the average systolic pressure ranges from

115 to 120 mmhg

In the systemic arteries diastolic pressure ranges from the

75 to 80 mmHg.

However, a systolic pressure of 90 to 140 mmHg, and a diastolic pressure of 60 to 90 are considered to be within the

normal range

In pulmonary arteries, the average systolic pressure is __ and the diastolic pressure is__

22 mmHg, 8 mmHg.

is the force exerted by the blood against the walls of the capillaries. It is about 32 mmHg at the arterial end and 12 mmHg at the venous end. This pressure is important in the formation of interstitial fluid.

capillary pressure

is the force exerted by the blood against the walls of the veins. It varies with the location of the veins and with the position of the body (ie standing. sitting, or lying). However, for all practical purposes, the venous pressure gradually decreases as blood travels through the peripheral veins toward the heart

venous blood pressure

- the faster the rate of heart beat and the greater force of contraction, the higher the arterial pressure will be

a. rate and force of heart beat

if the large arteries loss their elasticity, the pressure is unusually high during systole and falls to a low level dunng dastole

elasticity of the large arteries

varies with size of the lumen (space of a vessel) of the resistance becomes lowere of a vessel of lumen is the resistance to the blood flow is higher

peripheral resistance -

- an excessive loss of the blood (hemorrhage) results to kwer of the blood pressure

quantity of blood

the more viscous the blood is (there is an increased RBC), the blood pressure becomes higher

viscosity of the blood -

factor affecting blood pressure

age gender emotion exercise

the younger the person, the lower the blood pressure is; the older the person, the higher the blood pressure will become

age

excess weight is associated with the onset of a higher blood pressure

weight

after puberty, men have higher average blood pressure than women; however, after menopause, the blood pressure in women tends to be slightly higher than in men

gender

such as fear, anger, excitement have marked influence on the blood pressure as result on increased activity of the sympathetic nervous system and the increased secretion of epinephrine; the rise in blood pressure is due to an increase in rate and force of the heartbeat and to the peripheral vasoconstriction

emotion

after a strenuous exercise, the systolic pressure may rise to a height of 180 to 200 mmHg; one of the major contributing factors in the increase in stroke volume that results from skeletal muscle contraction result to an increase venous return

exercise

two indirect methods are used to measure the blood pressure in man

palpatory method auscalatory method

been found that the __ gives a more accurate result that the palpatory method.

auscultatory method

The , however, is also useful particularly in conjunction with the auscultatory method or when the noise level in the room makes the auscultatory method difficult to apply.

palpatory method

riva rocci

palpatory method

korotkow method

auscalatory

is generated during ventricular contraction or

systolic pressure

at the arterial end

32 mmhg

at the venous end.

12 mmhg

This pressure is important in the formation of interstitial fluid.

capillay blood pressure

This pressure is influenced by gravity, venous return and velocity of blood flow. The effect of the gravity is overcome by: - muscular pump, - changes in pressure within the thoracic cavity during inspiration and expiration and - venoconstriction

venous blood pressure

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Conan Clint · 100問 · 2年前

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