HBIO420L Quiz #3

studied byStudied by 0 people
0.0(0)
learn
LearnA personalized and smart learning plan
exam
Practice TestTake a test on your terms and definitions
spaced repetition
Spaced RepetitionScientifically backed study method
heart puzzle
Matching GameHow quick can you match all your cards?
flashcards
FlashcardsStudy terms and definitions

1 / 48

encourage image

There's no tags or description

Looks like no one added any tags here yet for you.

49 Terms

1

Blood Pressure

force of blood distending arterial walls

Expressed as systolic/dystolic mmHg

New cards
2

Systolic BP (SBP)

Highest pressure in arteries during left ventricular contraction

New cards
3

Diastolic BP

Lowest pressure in the arteries during left ventricular relaxation

New cards
4

SBP <90mmHg

Hypotension

New cards
5

Considered acceptable (<90mmHg SBP) if:

Dizziness

Syncope

Coldness

Pallor

Nausea

Low urine output

High arterial [blood lactate]

New cards
6

Mean Arterial Pressure MAP

average P in arteries during 1 cardiac cycle

driving force of blood → vascular system

New cards
7

Pulse pressure (PP) needed to calculate MAP: what is the formula?

PP = SBP - DBP

New cards
8

MAP is not an average of systolic/diastolic values. Why?

At rest → more time spent in diastole during a cardiac cycle > systole

During exercise → more time spent in systole during a cardiac cycle than diastole

New cards
9

Calculate MAP at rest

(SBP-DBP)/3 + DBP

New cards
10

Calculate Map during exercise

MAP = (SBP-DBP)/2 + DBP

New cards
11

Normal MAP (at rest values are around…)

70-100mmHg

New cards
12

<70-100mmHg (MAP Values at rest means what)

Low perfusion

New cards
13

>70-100mmHg (MAP Values at rest means what)

High resistance

New cards
14

MAP can reach up to… during exercise

155mmHg+

New cards
15

Total Peripheral Resistance (TPR) consists of

Vessel Diameter

Blood Viscosity

Total Vessel Length

New cards
16

CO is _________ to SBP

directly proportional

New cards
17

TPR is ________ to _____

directly proportional to BP

New cards
18

Arterial BV is _______ to SBP

directly proportional

New cards
19

Arterial compliance/vessel elasticity

Indirectly proportional to BP

New cards
20

Cardiac Output

Volume of blood ejected from LV/min

New cards
21

Frank-Starling Law of Heart

Venous return to heart → increase EDV

Stretch of ___________ of ventricle

_____ force

______ vol

_______ CO

myocardial fibers

contraction,

contraction

Stroke

increase (all)

New cards
22

TPR - Total Peripheral Resistance

Force produced between blood & walls of blood vessel

New cards
23

TPR is __________ to diameter

indirectly proportional

New cards
24

Vasomotor Tone

aMount of vasoconstriction of arteriole vessel (SNS)

New cards
25

Vasoconstriction will → to ______ vessel diameter

decrease

New cards
26

Viscosity

Physical property related → ease which fluid molecules flow past one another

New cards
27

TPR is ________ to viscosity

directly ppt

New cards
28

What factors decrease viscosity/hct

Anemia, Hemorrhage

Increased BT

New cards
29

Factors that increase viscosity/hct

Excess RBC

Cold temp

New cards
30

TPR is ____ to vessel length

directly ppt

New cards
31

Obesity decreases vessel length

F

New cards
32

body fat (increase) → increases no. of BV →

increases vessel length → TPR increase

New cards
33

Arterial BV to SBP

Arterial BV ppt to SBP

New cards
34

Excess na+ →

Increase BV

New cards
35

Dehydration, blood loss →

Blood Vol Decrease

New cards
36

Arterial Compliance/Vessel Elasticity

BP is indirectly ppt to material compliance (elasticity of artery walls)

New cards
37

Increase Arterial Compliance →

Decrease BP

New cards
38

HR * SV = Q

How to calculate CO

New cards
39

BV, HR, SV, Blood Viscosity, Peripheral Resistance increase →

BP increase

New cards
40

Baroreceptors (carotid a. & aortic arch) monitor

BP

New cards
41

Short term reg. is controlled by the sympathetic and parasympathetic nervous system by changes in:

HR, Contractility, Arterial Diameter

New cards
42

Environmental Factors Affecting BP

Exercise → steady-state/resistance

Body position → orthostatic hypotension, inversion

New cards
43

SBP increases with…

intensity increase, but no change in DBP (little)

New cards
44

TPR increases with resistance and upper-body exercise

T

New cards
45

TPR increaess/decreases with steady state aerobics

decreases

New cards
46

Q increases with graded exercise

T

New cards
47

Supine (vs seated upright) ↑ BP

Decreases gravity resistance > ↑ Venous Return ↑ EDV, ↑ SV > ↑ Q and ↑ BP

→ ↑ in SBP (6-7 mmHg) but (1mmhg DBP)

New cards
48

Standing (vs seated upright) ↓ BP

↑ Gravity Resistance > ↓ Venous Return > ↓ EDV ↓ SV ↓ Q ↓ BP

New cards
49

Orthostatic intolerance

↓ in BP with change in posture

New cards

Explore top notes

note Note
studied byStudied by 6 people
663 days ago
5.0(1)
note Note
studied byStudied by 3 people
28 days ago
5.0(1)
note Note
studied byStudied by 13 people
856 days ago
5.0(1)
note Note
studied byStudied by 520 people
170 days ago
4.5(2)
note Note
studied byStudied by 3 people
38 days ago
5.0(1)
note Note
studied byStudied by 14 people
707 days ago
5.0(2)
note Note
studied byStudied by 37 people
869 days ago
5.0(1)
note Note
studied byStudied by 23695 people
704 days ago
4.8(93)

Explore top flashcards

flashcards Flashcard (98)
studied byStudied by 1 person
829 days ago
5.0(1)
flashcards Flashcard (27)
studied byStudied by 7 people
38 days ago
5.0(1)
flashcards Flashcard (23)
studied byStudied by 27 people
429 days ago
5.0(1)
flashcards Flashcard (44)
studied byStudied by 7 people
789 days ago
5.0(1)
flashcards Flashcard (35)
studied byStudied by 10 people
731 days ago
5.0(2)
flashcards Flashcard (107)
studied byStudied by 4 people
155 days ago
5.0(1)
flashcards Flashcard (21)
studied byStudied by 48 people
544 days ago
5.0(1)
flashcards Flashcard (32)
studied byStudied by 79 people
755 days ago
5.0(3)
robot