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Bpk 205 > Lec 21 > Flashcards

Lec 21 Flashcards

(53 cards)

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1
Q

Each side of heart function as

A

Independent pump

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2
Q

Elastic systemic arteries are

A

Pressure reservoir

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3
Q

Systematic veins are

A

Volume reservoir

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4
Q

In arterioles

A

Adjustable screws=variable resistance
Lower resistance = higher diameter= lower BP
screw=sympathetic effect

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5
Q

In venules, BP

A

Is low

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6
Q

Artery tissues

A

High smooth
High elastic
Medium fibrous
Low epithelium

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7
Q

Arteriole tissues

A

High smooth
Low epithelium

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8
Q

Capillaries tissue

A

One layer epithelium

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9
Q

Venule tissue

A

Medium fibrous
Low epithelium

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10
Q

Vein tissue

A

Medium fibrous
Medium elastic
Medium smooth
Low epithelium

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11
Q

Cardiac output at rest vs exercise

A

5.8 L//min
Vs
25.6 L/min

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12
Q

During exercise less blood goes to

A

Brain/kidney/GI

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13
Q

Most of blood goes to

A

88% to skeletal muscle

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14
Q

Resistance to blood flow increase as

A

Radius decrease

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15
Q

Vasodilation

A

Decrease resistance

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16
Q

Vasoconstriction

A

Increased resistance

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17
Q

Larger tube

A

Slower blood flow

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18
Q

Veloctiy of blood flow will

A

Increase as blood flow rate increase
Decrease as tubes get larger

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19
Q

Blood pressure through circulation,

A

loose pressure

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20
Q

losing pressure in circulation called

A

pressure gradient

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21
Q

Pressure lost through circulation is due to

A

Friction

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22
Q

Friction in circulation is between

Study These Flashcards
A

blood And vessel walls

23
Q

friction in vessel walls increase as their diameter

24
Q

flow is proportional to

Study These Flashcards
A

pressure gradient

25
flow is inversely proportional to
resistance
26
F(flow) formula is
dP/R
27
veins selectively ---- to increase flow to skeletal muscle
Vasodilate
28
Mean systematic blood pressure is caqlculated via
avg btw systolic and diastolic pressure
29
Mean systematic pressure when 120/80
93
30
Pressure gradient of blood is generated by
Cardiac contractions
31
Thick, elastic arteries are
pressure reservoir
32
thin, expandable veins are
volume reservoir
33
Venous return
flow of blood into right atrium from peripheral vessels
34
valves ensure --- flow
one-way
35
how valves ensure of one-way flow
1- valves in **veins** prevent backflow 2- when skeletal muscle compresses the veins, they pushes the blood toward heart **skeletal muscle pump**
36
capillaries has ---- individual diameter but ---- total cross sectional diameter
smallest largest
37
what determine velocity of blood flow
TOTAL cross sectional area of vessels
38
higher total cross sectional will lead to ---- blood flow
slower
39
CApillary bed is available all the time in every region?
No
40
Precapillary sphincters open/close capillaries in response to
metabolic condition
41
Metarteriols
divert blood flow if sphincters are closed
42
Metarterioles can act as
Bypass channels
43
Capillaries are ---- to some degree
leaky
44
non leaky capillaries in --
brain tissue
45
capillary density is related to
metabolic activity cellls
46
capillaries tissue is
single layer flattened epithelial tissue
47
leak in capillaries is from ---- to ----
blood to interstitial cells
48
what leaks from blood?
-gases -water -ions -rarely protein
49
how much filtered out of capillaries
3L/day
50
excess tisuue fluid is picked up by
lymphatic vessels
51
lymph returns excess tissue fluid to
venous circulation at subclaivian vein
52
During ventricular ejection, blood presuure
will cause arteries to stretch and expand and store pressure in elastic walls
53
During isovolumc ventricular relaxation, how blood goes forward
the pressure that was stored in elastic walls, will recoil to maintain pressure

Bpk 205 (30 decks)

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