lecture 11: circulation UE

Question 1

def of artery

Answer 1

bood moving away from heart

Question 2

true or false: arteries branch to form smaller artereis?

Answer 2

truw

Question 3

what is an arteriole

Answer 3

Small arteries <0.5 mm diameter = Arteriole

Question 4

Where do arterials disperes their • O2 and nutrients

Answer 4

into Capillaries

Question 5

wehre does diffusion take palce

Answer 5

cappilarries

Question 6

what is the waste product of cellelur activaity picked up by

Answer 6

venules

Question 7

what to venules join to form

Answer 7

veins

Question 8

what are the 3 layers of an atery

Answer 8

tunica intima (interna)
tunica media
tunica extrema (adventitia)

Question 9

expalin tunica interna

Answer 9

Inner layer formed by squamous epithelium
• Inner wall forms the hole (Lumen)
• Attached by connective tissue to the middle layer (tunica media)

Question 10

explain tunica media

Answer 10

Thick intermediate layer formed by smooth muscle and elastic

tissue

Question 11

explain tunia extrema (adventitia)

Answer 11

Outermost fibrous layer

• Can contain some smooth muscle

Question 12

be able to label the layers of an artery

Answer 12

.

Question 13

why are arteries flexible

Answer 13

because of the tunica media

Question 14

what is it called when arteries harden with age?

Answer 14

arterioscleorsis

Question 15

what is is called when Lumen narrowing due to deposition of fats on walls and what can it cause

Answer 15

Atherosclerosis

• Can cause a heart attack or stroke

Question 16

explain anastomosis

Answer 16

• Small adjacent arteries can form to accommodate blood
flow
• Connecting arteries = ANASTOMOSIS
• Anastomosis is collateral circulation

Question 17

what are capillary walls formed by

Answer 17

Walls formed by single layer of epithelial cells (simple

squamous) =tunica interna

Question 18

what do capillaries form

Answer 18

Forms the most important part of the circulatory system

Ø CAPILLARY BED

Question 19

what is the diamter of caps

Answer 19

1mm long x 8-10 microns diameter

Question 20

where do capillaries locate

Answer 20

Between arterioles and venules

Question 21

what happens at the capillaries

Answer 21

Essential exchange of materials to maintain consistency

of internal environment

Question 22

be able to understand capillary bed diagram

Question 23

explain sphincters in veins

Answer 23

SPHYNICTERS CLOSE AND STOP BLOOD FLOW TO THAT AREA SIGNIFICALLY (BLOOD
CAN STILL GO THROUGH BUT WONT FILL UP THE ENTIRE THING)

Question 24

true of false: veins have the same 3 coats as arteries

Answer 24

true

Question 25

is the tunica media thinner in veins or artiereis

Answer 25

veins

Question 26

true of false: there are Often two or more veins to accompany each artery and explain

Answer 26

true Ø Venae Commitantes

Question 27

true or false: veins dont have valves

Answer 27

FALSE

Question 28

what is the purpose of veins

Answer 28

Aid in blood flow back to the heart

Question 29

what are the valves in veins made of

Answer 29

folds of Tunica Intima (Interna)

Question 30

be able to know the layer of veins and valves diagram

Question 31

what is varicose veins

Answer 31

when the valves dont close propely and blood can still flow through with gravity and pool

Question 32

what are the 3 parts of the aorta

Answer 32

ascending aorta arch descending

Question 33

what are the 3 branches of the aortic arch

Answer 33

1. (Right) Brachiocephalic Trunk (Artery) • Right Subclavian Artery • Right Common Carotid Artery 2. Left Subclavian Artery 3. Left Common Carotid Artery

Question 34

be bale to label of aorta and branches on diagram

Answer 34

.

Question 35

WHERE do the common carotid arterjes go to

Answer 35

Common Carotid Arteries enters the head and neck | region

Question 36

where do the vertebral arteries branch from and where do they enter

Answer 36

left and righ.t vertebral arteries wbranch from the | Subclavian arteries and enter the head and neck region

Question 37

when does subclavian artery change to axilla artery

Answer 37

Where Subclavian A. exits from under the first rib, it | changes name to Axillary Artery

Question 38

when does axillary cahnge to brachial

Answer 38

When Axillary reaches humerus at bicipital groove, it | changes its name to Brachial Artery

Question 39

where do the Anterior and Posterior Humeral Circumflex Arteries go

Answer 39

around the humeral neck

Question 40

where and what does the brachial artery bifurcare

Answer 40

Brachial Artery bifurcates below the elbow (usually) into | the Radial Artery (lateral) and Ulnar Artery (Medial)

Question 41

what to the radial and ulnar atery divide into and what does it from

Answer 41

divides into superfical and deep branches | Form the Superficial and Deep Palmar Arches

Question 42

where do digical arteries branch from

Answer 42

Digital Arteries branch from these palmar arches

Question 43

what do you find in the hand that join to form veins

Answer 43

tributaries

Question 44

what are the 2 main large veins in the arm

Answer 44

cephalic and basilic

Question 45

where does the cephalic vein travel through

Answer 45

deltopectoral groove

Question 46

after the cephalic vein travels through the deltopectoral, what does it go into

Answer 46

axillary vein

Question 47

which is more lateral: cephalic of brachial

Answer 47

cephalic si lateral | brachial is medial

Question 48

in the cubital region, what are the cephalic and brachial veins conncteed by

Answer 48

median cubital vein

Question 49

what do the deep veins in the arm form

Answer 49

brachial veins

Question 50

when brachial and basilic join, what do the form

Answer 50

the axillary vein

Question 51

what holds the sxillary artery and vein together?

Answer 51

axillary sheath

Question 52

where does the external jugular bein enter

Answer 52

subclavian vein

Question 53

where does the INTERNAL JUGULAR Vein join and what does it form

Answer 53

the Subclavian Vein to | form the BRACHIOCEPHALIC Vein