Lecture 15: Blood Pressure Flashcards Preview

PSIO 485 Exam 04 > Lecture 15: Blood Pressure > Flashcards

Flashcards in Lecture 15: Blood Pressure Deck (28):
1

Blood Pressure is:

The force exerted by the blood against a vessel wall

2

Blood Pressure Depends on:

- The volume of blood contained within the vessel
- The compliance (distensibility) of the vessel wall (how easily they can be stretched)

3

What is a "Sphygmomanometer?"

A devices that can indirectly measure the changes in arterial pressure throughout the cardiac cycle

4

What is the Korotokoff Sound?

Sounds that is emitted through the stethoscope once it is placed on the brachial artery

5

What are symptoms of Hypertension?

- Severe Headache
- Severe Anxiety
- SOB
- Nosebleed
- Feeling of Pulsations in neck or head

6

What are symptoms of Hypotension?

- Dizziness
- Syncope
- Lack of Concentration
- Nausea
- Cold Extremities

7

When can SBP be heard in Korotkoff Sound?
When can DBP be heard in Korotkoff Sound?

First
Fifth

8

What is Pulse determined by:

Systolic BP minus Diastolic BP

9

What is the formula for MAP?

Diastolic BP plus 1/3 pulse pressure
or
Cardiac Output times Total Peripheral Resistance

10

What is the formula for Mid-BP?

The sum of Sys BP plus Dia BP, divided by 2

11

What is Systolic Arterial Pressure?

Pressure exerted by blood vessel walls during ventricular contraction
- The pressure fills up the Aorta

12

What is Diastolic Arterial Pressure?

Pressure when the vessels are relaxed and filling up the left ventricle

13

What is Mean Arterial Pressure?

The pressure that propels the blood to the tissues

14

Baroreceptors Reflex
Maintain BP a nearly:

Constant Rate

15

Baroreceptors Reflex
Provides rapid negative:

Feedback Loops

16

Baroreceptors Reflex
Elevated BP reflexivity causes HR to ____ and this causes BP to ______

decrease; decrease

17

RAS System
Hormone that regulates:

BP and Fluid Balance

18

RAS System
When renal blood flow is reduced:
______ cells in kidneys convert _____ already in the blood into _____. This secretes directly into circulation

Juxtaglomerular; prorenin; renin

19

Carotid Sinus Baroreceptor
Innervated by Cranial Nerve __, _______ nerve

IX; Glossopharyngeal

20

Aortic Arch Baroreceptor
Innervated by Cranial Nerve __; ____ nerve

X; Vagus

21

120 mm Hg is equal to:
80 mm Hg is equal to:

16 pKa
11 pKa

22

Pulse Pressure
This pulse can be felt in an ____ lying close to the surface of the ___

artery; skin

23

Mean Arterial Pressure
The average pressure responsible for driving blood ____ into the ____ throughout the ____ _____

forward; tissues; cardiac cycle

24

Controlling BP
Mean Arterial Pressure is constantly monitored by _____ (______ sensors) in the circulatory system

baroreceptor (pressure)

25

Controlling BP
Baroreceptors sense changes in _____ and allow for short term (within ____) _______

pressure; (seconds); adjustment

26

2 most important baroreceptors are:

Carotid Sinus and Aortic Arch

27

Common Sinus Baroreceptor conducts signals to the

CV system

28

Renin-Angiotensin
RAS or RAAS system is a ____ system that helps regulate long-term _____ _____ and _____ _____ in the body

hormone
blood pressure; extracellular volume