Module 1 - Pressure and Static Pressure Flashcards

1
Q

An effect when force is applied on a given area

A

Pressure

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2
Q

When the same force is concentrated in a small area, the pressure on this area will be ———-

A

Greater

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3
Q

The greater the area over which force is applied, the —- pressure is exerted

A

Less

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4
Q

What is the standard unit of pressure

A

Pascal (Pa) or kilopascal (kPa)

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5
Q

What is the measurement of normal air pressure

A

101.3kPa

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6
Q

What is the measurement of blood gases: partial pressure of o2

A

13.3kPa

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7
Q

British units of pressure

A

Pounds/square inch (psi)

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8
Q

Air in car tyres =

A

28psi or 190kPa

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9
Q

Pressure exerted by the atmosphere against the body

A

Atmospheric pressure

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10
Q

What is measured by the displacement of a column of liquid?

A

Atmospheric pressure

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11
Q

mmHG

A

Millimeters of Mercury

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12
Q

1 Atm =

A

760 mmHG

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13
Q

Pressure that blood exerts on the walls of blood vessels

A

Blood pressure

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14
Q

Used to measure blood pressure

A

Manometer - sphygmomanometer

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15
Q

The measure of BP is based on the effect that an ——— ——– has on the ——— ————

A

external pressure; arterial pressure

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16
Q

Where is BP usually measured on the body?

A

At the brachial artery

17
Q

When blood just starts to flow into the artery, the turbulent flow creates a whooshing sound

A

Systolic blood pressure

18
Q

Pressure on the cuff is released until no sound can be heard

A

Diastolic BP

19
Q

Contraction of the heart

A

Systole

20
Q

Relaxation of the heart

A

Diastole

21
Q

Normal BP range for systolic

A

90-140 mm Hg

22
Q

Normal BP range for diastolic

A

70-90 mm Hg

23
Q

What changes BP?

A
Blood pressure diameter
Cardiac output (blood volume)
24
Q

Not all ———– have mercury in them

A

Manometers

25
Q

1kPa = mm Hg = cm H2o

A

7.5, 10.2

26
Q

Other pressures in the body include

A

respiration

pressure sores

27
Q

If a person remains in bed for long periods, it results in S————- — pressure to the body

A

Sustained low

28
Q

If a person remains in bed for long periods, it results in ————- of blood flow to tissue

A

deficiency

29
Q

If a person remains in bed for long periods, it results in

A

pressure sores

30
Q

Fluid in an enclosed container

A

Static liquid

31
Q

Properties of liquids under pressure are important for

A

body function

32
Q

Properties of liquid under pressure are important for movement of B—- and L—–

A

Blood; lymph

33
Q

Properties of liquid under pressure are important for F—– M———— across memebranes

A

Fluid movement

34
Q

Properties of liquid under pressure are important for B——– F———–

A

Bladder function

35
Q

Pressure is dependent on the —— of the liquid and the ——— of the liquid

A

Depth, density

36
Q

greatest depth = ———– flow rate

A

highest

37
Q

greatest density =

A

Highest pressure

38
Q

Pressure is exerted ———- in all direction in a static liquid

A

Equally

39
Q

Any change in pressure in an enclosed fluid is transmitted equally to every part of the fluid

A

Pascal’s principle