LAB 3: Blood vessels and blood pressure Flashcards Preview

ANATOMY AND PHYSIOLOGY II > LAB 3: Blood vessels and blood pressure > Flashcards

Flashcards in LAB 3: Blood vessels and blood pressure Deck (52)
1

______ form a closed circuit of tubes that carry blood from the heart to the body and back again.

blood vessels

2

Two major pathways of blood vessels are _____ and ____.

pulmonary circuit
systemic circuit

3

The five types of blood vessels

arteries, veins, capillaries, arterioles, venules

4

_____ contains vessels carrying blood from the heart to the lungs and back.

pulmonary circuit

5

____ contains vessels carrying blood from the heart to all other parts of the body and back.

systemic circuit

6

_____ are strong, elastic vessels adapted for carrying blood away from the heart under high pressure.

arteries

7

The largest arteries are called ____.

elastic

8

Elastic arteries branch into ____ arteries and then into ____.

muscular arteries
arterioles

9

The smallest arteries are ____.

arterioles

10

____ are vessels which are adapted to carrying blood back tot eh heart under low pressure.

veins

11

Capillaries merge to form ___>

venules

12

Venules merge to form ____ sized veins.

small to medium sized veins

13

Small to medium sized veins merge to form ____ veins.

large

14

The inner most layer of blood vessels are called ____.

tunica interna

15

Tunica interna is composed of two layers: _____ and _____.

endothelium (simple squamous epithelium)
subendothelial layer (elastic and collagenous fibers)

16

The middle layer of blood vessels are called ______.

tunica media

17

Tunica media is composed of ____.

smooth muscles

18

The tunica media is responsible for _____ and ____ that influence blood flow and pressure.

vasocontraction and vasodilation

19

The outer most layer is called the _____.

tunica externa

20

The tunica externa is composed of ______.

collagenous fibers

21

The tunica ____ attaches vessels to surrounding tissues.

externa

22

Veins have ____ and arteries do not.

valves

23

Veins have a ____ lumen (blood reservoir) than arteries.

larger

24

Veins have a thinner tunica ____ than arteries. Arteries have more influence over blood pressure.

media

25

____ the process of listening to body sounds (usually with use of a stethoscope).

auscultation

26

There are two parts to every heart beat ___ and ___.

lub and dub

27

The lub and dub sounds occur as blood is pushing against the ____ causing turbulence.

closed valves

28

The first sound (s1) or lub is when the ____ are closing and the ventricles are ____.

AV valves
contracting

29

The first heart sound (lub) is called ______.

ventricular systole

30

The second sound (s2) or dub is when the _____ are closing and the ventricles are ____.

semilunar valves
relaxing

31

The second sound (s2) or dub is called _____.

ventricular diastole

32

____ is the difference in pressures due to the expansion and then recoil of the arterial walls.

pulse

33

When the ventricles contract, a wave of blood travels through the arteries and can be felt as your ___.

pulse

34

Typical resting heart rate is between _____ bpm.

60-100 bpm

35

Generally, the lower the resting heart rate, the more _____ the heart is functioning and the better the cardiovascular fitness.

efficient

36

____is a rapid pulse rate of over 100 bpm.

tachycardia

37

___ is a slow pulse rate of less than 60 bpm.

bradycardia

38

_____ is the pressure exerted by blood on the walls of the blood vessels

blood pressure

39

_____ is usually measured in the arteries and those called arterial _________.

blood pressure
blood pressure

40

There are ___ types of blood pressure reading due to the contraction and then relaxation of the ventricles.

2

41

_____ is when the ventricles contract.

systole

42

When the ventricles contract blood pressure ____ due to blood being forced into the aorta

increases

43

When the ventricles relax blood pressure ____ as the ventricles open and refill with blood from the atria.

decreases

44

Measuring blood pressure is done with the use of a ______ and a ______.

stethoscope
sphygomanometer

45

When measuring blood pressure air in the cuff is increased until it is greater than the ___ pressure in the artery.

systolic

46

When measuring blood pressure the air is released from the cuff the blood can start to ___ through the artery once more. This causes a "swooshing" sound or what is known as a ____ sounds.

flow
Korotkoff sounds

47

The sound of turbulent blood flow is called ____.

korotkoff sounds

48

Normal resting blood pressure should be no higher than _____.

120/80

49

Prehypertension blood pressure is ____.

120-139/ 80-89

50

Hight blood pressure (hypertension stage 1)

140-159/ 90-99

51

High blood pressure (hypertension stage 2)

160 or higher/ 100 higher

52

Hypertensive Crisis (emergency care needed)

higher than 180 / higher than 110