unit two blood vessels

Question 1

blood vessels

Answer 1

delivery system of dynamic structures that begins and ends at the heart

Question 2

arteries

Answer 2

carry blood away from heart

Question 3

capillaries

Answer 3

direct contact with tissue cells

Question 4

veins

Answer 4

carry blood toward heart

Question 5

what is the order of leaving the heart?

Answer 5

• artery
• arteriole
• capillary
• venule
• vein

Question 6

what are the thee layers of vessels?

Answer 6

• tunica intima(inside)
• tunica media
• tunica adventitia(outside)

Question 7

what are the three groups of arteries and what do they do?

Answer 7

1. elastic arteries
   - conducting
   - pressure
2. muscular arteries
   - disturbing
3. arterioles
   - resistance

Question 8

capillaries

Answer 8

-only single RBC can pass through at a time

Question 9

what are the three types of capillaries?

Answer 9

• continuous; tight, narrow, BBB
• fenestrated; wider, kidneys and endocrine. glands
• discontinous (sinusoidal); big gaps, free flow

Question 10

what two vessels are in capillary beds?

Answer 10

1. vascular shunt

2. true capillaries

Question 11

venules

Answer 11

pericytes

Question 12

vascular anastomoses

Answer 12

extra pathways for vessels

Question 13

systolic pressure

Answer 13

highest pressure of aorta

Question 14

diastolic pressure

Answer 14

lowest pressure of aorta

Question 15

pulse pressure

Answer 15

difference between systolic and diastolic pressure

Question 16

mean arterial pressure

Answer 16

pressure that propels blood into tissues

Question 17

what does clinical monitoring use and look for?

Answer 17

• wrap cuff

- sounds of korotkoff

Question 18

hypertension

Answer 18

greater than 140/90

Question 19

hypotension

Answer 19

less than 90/60

Question 20

what are the three types of circulatory shock?

Answer 20

1. hypovolemic shock
2. vascular shock
3. cariogenic shock

Question 21

what are two things in blood flow to the heart?

Answer 21

1. myoglobin

2. mitochondria/ respiratory enzymes

Question 22

brain blood flow

Answer 22

flow must be constant 15%

Question 23

lung blood flow

Answer 23

increased O2 or decreased CO2

Question 24

blood flow

Answer 24

volume of blood flowing though vessels, organ or entire circulation in a given time period

Question 25

blood pressure

Answer 25

force per unit are extend on wall of blood vessel by blood

Question 26

resistance

Answer 26

amount of friction blood encounters with vessel walls

Question 27

blood viscosity

Answer 27

thickness or stickiness of blood

Question 28

total blood vessel length

Answer 28

the longer the vessel, the greater the resistance

Question 29

blood vessel radius

Answer 29

greatest influence on resistance, the bigger the vessel, the smaller the resistance

Question 30

what factors aid in venous return?

Answer 30

1. skeletal muscle pump 2. respiratory pump 3. sympathetic vasoconstriction

Question 31

bulk flow

Answer 31

causes continuous mixing of fluid

Question 32

hydrostatic pressures

Answer 32

1. HPc | 2. HPif

Question 33

Colloid osmotic pressures

Answer 33

1. OPc | 2. OPif