Lec 23 - Blood Vessels 1

Question 1

what do venules do?

Answer 1

drain blood away from capillaries

Question 2

what are the 3 different layers in blood vessels?

Answer 2

tunica intima - simple squamous, innermost layer
tunica media - middle layer, smooth muscle
tunica externa - outer layer. CT

Question 3

in larger vessels, what is the 4th layer called?

Answer 3

vaso vasorum

aka “vessels of the vessels”

Question 4

which vessel has the highest blood pressure?

Answer 4

arteries

Question 5

which vessels have 3 layers

Answer 5

arteries, arterioles, venules, veins.

Question 6

which vessel has only 1 layer

Answer 6

capillaries.

Question 7

which vessel has the lowest pressure and velocity?

Answer 7

capillaries

Question 8

which vessel has a larger lumen?

Answer 8

veins

Question 9

which tunic allows changes in the diameter of the blood vessel?

Answer 9

thick tunica media.

Question 10

which vessel regulates blood flow to the capillary bed supplying tissues?

Answer 10

arterioles

Question 11

which tunic does sympathetic neurons innervate?

Answer 11

tunica media

Question 12

what are 5 blood vessels commonly used to determine a person’s pulse?

Answer 12

brachial, medial cubital, radial, carotid arterly. etc

Question 13

which vessel is most frequently used for drawing blood? why is this vessel the best choice?

Answer 13

medial cubital - its a vein. you cant take blood from an artery

Question 14

name the blood vessel in the upper limb used to determine a person’s blood pressure.

Answer 14

brachial, medial cubital

Question 15

trace the path a blood cell would take after leaving to heart to supply oxygen to the foot.

Answer 15

aorta -> abdominal aorta -> common iliac -> external iliac -> femoral -> popliteal -> anterior/posterior tibial -> dorsal & plantar arches

Question 16

what arteries would you have to go through to go from the heart to the fingers?

Answer 16

aortic arch -> brachiocephalic -> right subclavian -> axillary -> brachial -> radial/ulnar -> palmar arches -> digitals

Question 17

what is the pathway from the left ventricle to the left foot?

Answer 17

left ventricle -> aortic arch -> descending aorta/abdominal aorta ->common ilian -> external iliac -> femoral -> popliteal -> anterior/posterior tibial -> plantar arches

Question 18

what are branches of the abdominal aorta?

Answer 18

celiac trunk
superior mesenteric
renal & gonadal
inferior mesenteric

Question 19

what does the celiac trunk supply?

Answer 19

stomach, spleen, liver

Question 20

what does the superior mesenteric supply?

Answer 20

small and large intestine

Question 21

what does the inferior mesenteric supply?

Answer 21

colon and rectum