vessels

Question 1

carries blood back to the heart

Answer 1

veins

Question 2

carrys blood away from the heart

Answer 2

arteries

Question 3

arteries are usually ______ walled than veins

Answer 3

thicker

Question 4

which has semilunar valves?

Answer 4

veins

Question 5

only composed of tunica interna

Answer 5

capillaries

Question 6

most common type of capillary

Answer 6

continuous capillary

Question 7

have very small slits to keep things larger than small proteins trapped in blood

Answer 7

continuous capillaries

Question 8

have small pores that allow easier filtration and diffusion. kidneys have these capillaries

Answer 8

fenestrated capillaries

Question 9

intentionally leaky with gaps between cells. Mainly found in specialized areas like the liver, spleen, and bone marrow.

Answer 9

sinusodial capillaries

Question 10

mainly elastic fibers woven into the tunica intima and media

Answer 10

elastic arteries

Question 11

stretch and recoil with every heart beat

Answer 11

elastic arteries

Question 12

Adjust diameter for BP control, some regulate blood flow to part of the body

Answer 12

muscular arteries

Question 13

Control blood flow totissues and some control over BP.

Answer 13

arteriols

Question 14

these arteries are closer to the heart, more stretch/ recoil

Answer 14

elastic arteries

Question 15

these arteries are farther from the heart, less stretch/ recoil but more need to constrict

Answer 15

muscular arteries

Question 16

collect blood from venules

Answer 16

veins

Question 17

Lumen diameter ______ as we trace back to the heart to ensure that pressure keeps dropping.

Answer 17

increase

Question 18

collect blood from capillaries

Answer 18

venules

Question 19

serve tissues

Answer 19

capillaries

Question 20

what controls how much blood a tissue receives?

Answer 20

local control

Question 21

why is it hard for veins to return blood uphill to the heart

Answer 21

low pressure

Question 22

what two things work together to deliver blood back to the heart

Answer 22

semilunar valves work with muscle contraction

Question 23

semilunar valves working with muscle contraction to deliver blood back to the heart id referred to as

Answer 23

skeletal muscle pump

Question 24

the thin tissue layer wrapping outside of the vessel

Answer 24

tunica adventitia

Question 25

true/false: the tunica adventitia seems to make up more of the veins walls than the arteries

Answer 25

true

Question 26

the tunica media is what layer of the vessel? What kind of tissue?

Answer 26

Middle layer of thick smooth muscle

Question 27

True/False: The tunica media is the same thickness is arteries and veins

Answer 27

False; much thicker in arteries

Question 28

innermost layer that contains simple squamous epithelium in arteries and veins.

Answer 28

tunica intima

Question 29

True/False: The artery’s tunica intima may also contain a substantial layer of elastic connective tissue referred to as the internal elastic lamina.

Answer 29

True

Question 30

Deposits of cholesterol in the arterial walls reduce both

Answer 30

diameter and flexability of these vessels

Question 31

arteries close to the heart

Answer 31

elastic arteries

Question 32

arteries farther away from the heart

Answer 32

muscular arteries

Question 33

smallest arteriols progress towards

Answer 33

capillaries

Question 34

what are the three different types of capillaries

Answer 34

continuous capilaries, fenestrated capillaries, and sinusodial capillaries

Question 35

Negative feedback loops between baroreceptors and control centers in the medulla oblongata are responsible for

Answer 35

short term blood pressure homeostasis

Question 36

pressure exerted on the walls of the arteries at the peak of ventricular contraction/ejection.

Answer 36

systolic

Question 37

when the heart is filling (at rest) and is not forcing blood out into the arterial system. naturally lower

Answer 37

diastolic

Question 38

What detects blood pressure and signals the medulla?

Answer 38

barrorecptors

Question 39

barroreceptors are located near what two arteries

Answer 39

aorta and carotid arteries

Question 40

When pressure is detected to be too low, the ______ will speed up the heart rate

Answer 40

cardiac center

Question 41

increasing heart rate increases

Answer 41

cardiac output

Question 42

If blood pressure is detected to be too low, the cardiac center will

Answer 42

increase heart rate

Question 43

true/false: rate and cardiac output are directly releated

Answer 43

true

Question 44

shock is an example of what type of feedback?

Answer 44

it is inappropriate positive feedback

Question 45

When does shock occur?

Answer 45

When blood pressure drops so low that cells may begin to die

Question 46

What may cause shock?

Answer 46

Excessive bleeding/ vasodilation

Question 47

send impulses to the smooth muscle of the blood vessels when it is necessary to induce vasoconstriction and raise blood pressure

Answer 47

vasomotor center

Question 48

true/false: venous vasoconstriction does increase venous return

Answer 48

true. venous vasoconstriction does increase venous return

Question 49

found in the neck, drain the head

Answer 49

jugular vein

Question 50

drain shoulder/arm

Answer 50

subclavian vein

Question 51

drains the kidney

Answer 51

renal vein

Question 52

collection of veins which drain the digestive system

Answer 52

hepatic portal system