Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

SRNA Must Know CONCEPTS -Anesthesia > NAJEEB Hemodynamics Part II > Flashcards

NAJEEB Hemodynamics Part II Flashcards

(70 cards)

Start Studying
1
Q

Formula of Velocity

A

Q (flow) / PI r^2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Total diameter from capillaries to vena caval system progressively (increasse/ decrease)

A

DECREASE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Velocity in inversely proportional to the

A

Cross sectional area through which blood is flowing.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

As blood passes through the arterioles what happens to flow?

A

Pressure drops trying to overcome the resistance found in arterioles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Smallest branch of arteries

A

Arterioles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Capillaries role ( main )

A

Exchange vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Diameter of aorta vs ALL ARTERIOLES DIAMETER ADDED together, capillaries, etc

A

Diameter of aorta is large, but All ARTERIOLES DIAMETER ADDED TOGETHER IT IS LARGER than aorta. All CAPILLARIES added together, LARGER than arterioles and arteries.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

As blood gets to the capillaries what occurs?

A

Gas exchange Pick up O2 from alveoli, Release CO2 to alveoli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Cross sectional area from aorta, arteriole to CAPILLARIES progressively

A

INCREASE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Point of maximum resistance to systemic circulation

A

Arterioles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Veins are called_______vessels

A

Capacitance vessels. Venous side capacitance is high

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cross sectional area from CAPILLARIES to VENA CAVA progressivel

A

DECREASE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Veins vs ARTERIES: PRESSURE

A

Veins low pressure

Arteries High pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

2 advantages of arterioles

A

THICK-walled

Have A LOT OF SMOOTH MUSCLES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Veins vs ARTERIES: Blood

A

VEINS :Getting UNoxygenated blood from exchange vessels

ARTERIEs; Providing oxygenated blood to exchange vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the pulse pressure?

A

Difference between systolic and diastolic BP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Velocity of blood flow : what is it

A

Velocity of blood as it moves through systemic circulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

% of CO going to coronary

A

5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Blood in arteries is under ____PRessure, therefore we call it ______Volume

A

high ; STRESSED volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Pressure in pulmonary capillaries is

A

8 mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Velocity of is ____in aorta _____In arteries ______ in arterioles ________in capillaries

A

High; lower; even lower, LEAST

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Veins vs ARTERIES: Volume

A

Vein high volume

Arteries low volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Capillaries come together to form

A

venules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Velocity is proportional to

A

Blood flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Beta 2 adrenergic receptors on which bed
Musculoskeletal
26
Capilaries is about _____
30mmHg
27
Flow to large surface area, what happen to velocity?
decrease
28
More metabolically active tissue (like during exercise)How do arterioles react?
They dilate so that more blood can get to the tissues. Increase metabolic vasodilators release
29
Sympathetic OUTFLOW or OVERFLOW means there is
Arteriole constriction in renal, splanchnic and cutaneous | Stimulates beta 2 on musculoskeletal leading to dilation
30
Veins and blood
70% of BV is in veins
31
Pressure in LV
0 during diastole | 120 during systole
32
Capillaries role
Exchange vessels
33
Systemic venous side type of blood
unoxygenated
34
Arterioles richly innervated by
Sympathetic (Alpha-1 adrenergic )
35
How do you calculate MAP?
Diastolic + 1/3 systolic BP
36
Pressure in major ELASTIC arteries
120 80 MAP 93mmhg
37
Total diameter of venules is more/less than capillaries
less
38
IF venous smooth muscle dilate (remember they are large capacitance vessels, MEANING there is VENOUS VASODILATION , what happens to UNSTRESSED VOLUME?
Unstressed volume INCREASED , venous return reduced, STRESSEd volume DECREASE
39
Should the pressure in the RA should lower or higher than the pressure in the caval system?
The pressure should be lower in the RA, because if the pressure is higher then blood would not be able to drain into the RA.
40
Alpha 1 adrenergic receptors on which bed
splanchnic Renal Cutaneous
41
Venous smooth muscle also have
sympathetic nerve supply meaning that they can constrict and dilate
42
Good thing about major AORTA arteries is that they are
Elastic , Systole stretch, diastolic relaxes , and recoils inward
43
Total diameter from large arteries to capillaries progressively (increasse/ decrease)
INCREASE
44
PA diastolic pressure is
8 mm Hg
45
Blood in veins is under _____Pressure, therefore we call it ______Volume
low: unstressed volume
46
Veins vs ARTERIES: lumen and wall describe
veins larger lumen, thin walled | Arteries smaller lumen, THICK WALL
47
Pressure gradient from systemic circulation to LA:
93 to 0 mmHg
48
Pressure gradient from pulmonary circulation to RA:
15 mmHg to 5-8 mmHg
49
RV diastolic pressure is _____ and systolic pressure is about
0; 25 mmHg (remember LV systolic is 120mmHg)
50
Pressure in venules is
15 mmHg (pressure is lower to allow blood to flow from capillaries to veins)
51
Efferent brings blood
Away from the glomerulus
52
From aorta to arteries to arteriole to venous
There is a PROGREssive decreASE in individual vessels diameter, but collectively bigger
53
Greatest resistance to systemic flow is
ARTERIOLES
54
By the times blood gets to the caval systme what is the presure?
4-5 mmHg
55
Pressure in LA
5-8 mmHg
56
By the times blood gets to the caval system what is the presure?
4-5 mmHg
57
Pressure in pulmonary veins
5 mmHg
58
Afferent brings blood_______and the diameter is ______
To glomerulus (DIAMETER IS larger)
59
Increase the cross sectional area will do what to blood flow?
decrease
60
MAP for 120/80
93 mmHG
61
What is velocity?
rate of LINEAR Displacement of blood per unit of time in the circulatory system.
62
From major arteries to organs
Arteries Arterioles Capillaries
63
Why is Glomerular capillaries so high at 50mmHg
Because it is located between 2 arterioles, Afferent (towards) EFFERENT (away)
64
Concept: IF venous smooth muscle constrict (remember they are large capacitance vessels, MEANING there is VENOUS VASOCONSTRICTION , what happens to UNSTRESSED VOLUME?
Unstressed volume is decreased Unstressed volume is shifted to the heart, and through heart to ARTERIOLE SIDE, then becomes STRESSED VOLUME . Stress volume INCREASED
65
% of CO going to GI
15%
66
Upon blood coming from the caval system, into the RA, pressure in the RA is usually close to
0
67
Most Capilaries is about _____except ____
30mmHg
68
Veins vs ARTERIES: lumen and wall describe
veins larger lumen, thin walled | Arteries narrow lumen, THICK WALL
69
PA systolic pressure is similar to RV pressure of
25mmHg
70
Venous system :% of total blood
70%

SRNA Must Know CONCEPTS -Anesthesia (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions