Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy > blood vessels part 1 > Flashcards

blood vessels part 1 Flashcards

1
Q

blood path of arteries

A

arteries
to arterioles
to capillaries

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

Blood path drained

A

capillary beds drained by venules
to veins
to great veins

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

largest to smallest of veins and arteries

A 
veins; 
great vein 
vein
venule
capillary
arteries:
elastic artery
muscular artery
arteriole
capillary
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

vessel anatomy

A

oiutermost to innermost layer: tunica externa
tunica media
tunica intima endothelium
venules and arterioles only have the first and last layer
capillaries only endothelium

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

tunica intima

A

Lines the lumen or interior – endothelium - slick

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

tunica media

A

Smooth muscle – changes diameter of the vessels – increases or decreases blood pressure

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

tunica externa

A

Composed of fibrous connective tissue – supports and protects the vessels

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

blood volume porportions greatest to least

A

veins and venules (65%)
arteries and arterioles (13%)
pulmonary vessels 9
heart and capillaries 7

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

velocity flow on chart

A

fast through arteries and arterioles, slow through capillaries, fast through venules and veins

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

blood pressure on chart

A

high blood pressure at arteries, low through capillaries and veins

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

surface area to volume on chart

A

small surface area to volume ratio all except high at capillaries

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

what factors affect diffusion happening at capillary beds

A

low pressure
high surface area to volume ratio
slow moving
very thin (one cell thick)

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

why are artery walls much thicker than veins

A

Must be able to expand as blood is forced into them and recoil passively (aids circulation)
Tunica Media is heavier
veins not exposed to high pressure

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

Elastic arteries characteristics

A

– largest diameter, lowest resistance, elasticity contributes to maintain blood pressure, “auxiliary pumps”, not involved in vasoconstriction

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

muscular arteries

A

“distributing arteries,” involved in vasoconstriction/dilation to small exten

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

Arteriole

A

most resistance, main agent of vasoconstriction/dilation to control blood flow to specific regions

17
Q

arteriole controlled by

A

Controlled by hormone, nerve, chemical influences

think cold hands/nose/ears during thermoregulation

18
Q

Why do capillaries have less resistance than arterioles

A

The change in diameter between arterioles to capillaries is smaller, shorter blood vessels, and less pressure all contribute

19
Q

Vein Valves

A

Found only in lower limbs to help oppose force of gravity while upright.

20
Q

Arteriosclerosis

A

“hardening of the arteries

21
Q

Atherosclerosis

A

clogged arteries, plaque build up

22
Q

treatment for plaque build up

A

stent

23
Q

varicose veins

A

bulging, swollen, purple, ropy veins, seen just under your skin, caused by damaged valves within the veins
also old age

24
Q

Aneurysm

A

aneurysm is an abnormal bulge in the wall of a blood vessel

most common in aorta

25
Q

aneurysm treatments

A

stent
fill with rope
block off flow

26
Q

Raynaud’s

A

spasms of the small arteries of the fingers and toes, brought on by exposure to cold or excitement
white cold fingers

27
Q

blood flow

A

volume of blood flowing through

28
Q

Blood Pressure

A

force exerted on vessel walls

29
Q

Resistance

A

opposition to flow (friction)

30
Q

Resistance influenced by

A

blood viscosity

blood vessel length & diameter

31
Q

Vital signs

A

pulse and blood pressure, along with respiratory rate and body temperature

32
Q

pulse

A

pressure wave caused by the expansion and recoil of arteries

33
Q

Hypotension

A

low blood pressure
Systolic pressure below 100 mm Hg
Often associated with long life and lack of cardiovascular illness

34
Q

Hypertension

A

high blood pressure
Sustained elevated arterial pressure of 140/90 or higher
May be transient adaptations during fever, physical exertion, and emotional upset
Often persistent in obese people

35
Q

Prolonged hypertension is a major cause of

A

heart arrhythmias, heart failure, vascular disease, renal failure, and stroke

36
Q

Hypotension can cause

A

Loss of consciousness
Fatigue, dizziness, lethargy
Prolonged low BP can lead to loss of organ function due to insufficient perfusion

37
Q

Circulatory Shock

A

Blood vessels are inadequately filled
Blood cannot circulate normally
Results in inadequate blood flow to meet tissue needs

38
Q

perfusion triangle

A

heart
blood vessels
blood

Anatomy (29 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions