Lecture 15: Blood Pressure Flashcards Preview

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

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

Blood Pressure is:

A

The force exerted by the blood against a vessel wall

2
Q

Blood Pressure Depends on:

A
  • The volume of blood contained within the vessel

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

3
Q

What is a “Sphygmomanometer?”

A

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

4
Q

What is the Korotokoff Sound?

A

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

5
Q

What are symptoms of Hypertension?

A
  • Severe Headache
  • Severe Anxiety
  • SOB
  • Nosebleed
  • Feeling of Pulsations in neck or head
6
Q

What are symptoms of Hypotension?

A
  • Dizziness
  • Syncope
  • Lack of Concentration
  • Nausea
  • Cold Extremities
7
Q

When can SBP be heard in Korotkoff Sound?

When can DBP be heard in Korotkoff Sound?

A

First

Fifth

8
Q

What is Pulse determined by:

A

Systolic BP minus Diastolic BP

9
Q

What is the formula for MAP?

A

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

10
Q

What is the formula for Mid-BP?

A

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

11
Q

What is Systolic Arterial Pressure?

A

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

12
Q

What is Diastolic Arterial Pressure?

A

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

13
Q

What is Mean Arterial Pressure?

A

The pressure that propels the blood to the tissues

14
Q

Baroreceptors Reflex

Maintain BP a nearly:

A

Constant Rate

15
Q

Baroreceptors Reflex

Provides rapid negative:

A

Feedback Loops

16
Q

Baroreceptors Reflex

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

A

decrease; decrease

17
Q

RAS System

Hormone that regulates:

A

BP and Fluid Balance

18
Q

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

A

Juxtaglomerular; prorenin; renin

19
Q

Carotid Sinus Baroreceptor

Innervated by Cranial Nerve __, _______ nerve

A

IX; Glossopharyngeal

20
Q

Aortic Arch Baroreceptor

Innervated by Cranial Nerve __; ____ nerve

A

X; Vagus

21
Q

120 mm Hg is equal to:

80 mm Hg is equal to:

A

16 pKa

11 pKa

22
Q

Pulse Pressure

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

A

artery; skin

23
Q

Mean Arterial Pressure

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

A

forward; tissues; cardiac cycle

24
Q

Controlling BP

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

A

baroreceptor (pressure)

25
Q

Controlling BP

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

A

pressure; (seconds); adjustment

26
Q

2 most important baroreceptors are:

A

Carotid Sinus and Aortic Arch

27
Q

Common Sinus Baroreceptor conducts signals to the

A

CV system

28
Q

Renin-Angiotensin

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

A

hormone

blood pressure; extracellular volume