Functions of the blood vessels

Question 1

Functions of blood vessels

Answer 1

• delivery system(CO@,O2, nutrients, waste)
• reg, blood pressure
• exchange of nutrients and waste (capillaries)
• redistribute blood as needed
• reg. body temp

Question 2

Primary purpose to _____, _____, _____

Answer 2

O2, hormones and nutrients

Question 3

Carries wastes ( ____ and _____)

Answer 3

nitrogenous wastes from breakdown of proteins and CO2

Question 4

Blood pressure determined by ____ and _____

Answer 4

pumping of hear and size of lumen

Question 5

Cardiac output=

Answer 5

rate x volume, ^ = pressure^

Question 6

Hypertension

Answer 6

^blood pressure; ruptured vessels

Question 7

Hypotension

Answer 7

v blood pressure; shock

Question 8

Systolic

Answer 8

sounds first heard (left ventricle contracting)

Question 9

Diastolic

Answer 9

no sounds

Question 10

2 instruments used to take blood pressure in brachial artery

Answer 10

sphygmomanometer and stethoscope

Question 11

Korotkoff sounds

Answer 11

sounds blood makes as it hits the arterial wall while taking blood pressure

Question 12

Blood returns to heart by
1)
2)
3)

Answer 12

skeletal muscle action/pump
respiratory movements/pump,
constriction of veins caused by sympathetic stimuli

Question 13

Rapidly acting blood pressure regulators ____ and ____

Answer 13

baroreceptor and release of norepinephrine/epinephrine from adrenal medulla

Question 14

Baroreceptor

Answer 14

located in aortic arch and carotid sinus; sends sensory info -> cranial nerves 9 (glossopharyngeal) and 10 (vagus) to brain-> medulla oblongata-> decides v parasympathetic or ^sympathetic response

Question 15

slow acting bp resgulators ____ and ____

Answer 15

renin-angiotensin-aldosterone mechanism and adh

Question 16

renin-angiotensin-aldosterone mechanism

Answer 16

Activation of this mechanism increases blood volume and causes vasoconstriction

Question 17

ADH as vassopresin

Answer 17

by decreasing blood volume through the renal (kidney) secretion of sodium (Na+) and water & vice versa

Question 18

why capillaries are effective as exchange vessels

Answer 18

thin walls
large surface area
slow blood flow

Question 19

diffusion

Answer 19

particles move from high to low

Question 20

osmosis

Answer 20

water moves from high to low

Question 21

space between cells is called

Answer 21

interstitial space

Question 22

filtration

Answer 22

pressure pushes water out of capillary through interstitial space

Question 23

Filtration = ___ concentration of ____

Answer 23

high concentration of proteins in capillary

Question 24

high concentration of protein in capillary=

Answer 24

osmosis, water moves back in capillary

Question 25

when too much water goes into tissues

Answer 25

edema

Question 26

not enough water in tissues

Answer 26

dehydration

Question 27

at rest ____% of blood in muscles

exercise ___% of blood in muscles

Answer 27

rest- 20%, exercise- 70%

Question 28

respiratory movements/pump

Answer 28

^thoracic size = v pressure in the thorax and ^pressure in abdominal cavity.^abdominal pressure squeezes vena cava, thereby pushing more blood toward the heart

Question 29

skeletal muscle action/pump

Answer 29

the skeletal muscles contract, they squeeze the large veins, forcing blood to heart;