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EXSC 310 > Chapter 6 > Flashcards

Chapter 6 Flashcards

0
Q

Major cardiovascular functions:

2. Removal of _____ and other metabolic waste

A

CO2

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1
Q

Major cardiovascular functions:

1. Delivery of _____ and other nutrients

A

O2

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2
Q

Major cardiovascular function:

3. Transportation of ________

A

Hormones

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3
Q

Major cardiovascular functions:

4. _______regulation

A

Thermo

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4
Q

Major cardiovascular functions:

5. Maintenance of ________ balance and overall body fluid balance

A

Acid-base

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5
Q

Major cardiovascular functions:

6. _______ function

A

Immune

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6
Q

The primary function of the cardiovascular system is to ensure adequate ______ _______ throughout the circulation to meet the metabolic _______ of the tissues

A

Blood flow

Demands

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7
Q

Heart _______ varies according to the stress placed on the chamber _______

A

Thickness

Walls

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8
Q

What is the most powerful of chambers and the largest chamber, with exercise training the size and thickness of this ventricle increases

A

Left ventricle

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9
Q

What node is known as the pacemaker

A

Sinoatrial or SA

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10
Q

What node transmits an impulse from the atrium into the ventricle

A

Atrioventricular or AV node

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11
Q

What branches to both ventricles and is also know as the bundle of his

A

AV bundle

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12
Q

What fibers are also known as terminal branches

A

Purkinje

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13
Q

PNS acts through the ______ nerve, releasing ______ to ______ heart rate and force of cardiac contraction

A

Vagus
ACh
Decrease

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14
Q

At maximal vagal tone, HR = _______ beats/min

A

20-30

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15
Q

SNS _______ rate of impulse generation and conduction speed, ______ heart rate and force of cardiac contraction, _____ release from _______ medulla

A

Increases
Decreases
Epi/ not epi
Adrenal

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16
Q

Maximal sympathetic stimulation, HR= _____ beats/ min

A

250

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17
Q

Resting HR in adults tend to be between ______ to _____ beats/min

A

60

100

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18
Q

Extended endurance training an lower resting HR to _____ beats/min or lower

A

35

19
Q

The lower HR. Is thought to be due to increased ______ stimulation (increased ______ tone)

A

PNS

Vagal

20
Q

An ECG provides a _______ record of the ______ activity of the heart and can be used to aid clinical diagnosis

A

Graphical

Electrical

21
Q

Resting heart rate below 60 bpm

A

Bradycardia

22
Q

Resting heart rate above 100 bpm

A

Tachycardia

23
Q

premature ventricular contractions: _____ or ____ beats from impulses outside the _____ Node

A

Skipped or extra

SA

24
Q

Three or more consecutive PVCs

A

Ventricular tachycardia

25
Q

Ventricular fibrillation: contraction of the ventricular tissue is _______ and can result in cardiac _______

A

Uncoordinated

Death

26
Q

Cardiac cycle is defined as the mechanical and electrical events that occur during ____ heart beat (_____ to _____)

A

One

Systole to systole

27
Q

______ is the contraction phase during which chambers ______ blood

A

Systole

Expel

28
Q

______ is the relaxion phase during which the chambers _______ with blood

A

Diastole

Fill

29
Q

Stroke volume is the volume of blood pumped per ______

A

Contraction

30
Q

SV= _____-_____ (ml)

A

EDV

ESV

31
Q

End diastolic volume- volume of blood in the ventricle just _____ contraction

A

Before

32
Q

End systolic volume- volume of blood in ventricle just ______ contraction

A

After

33
Q

Cardiac outputs total volume of blood pumped by the ventricle per ________

A

Minute

34
Q

Q= _____x______ (L/min)

A

HR

SV

35
Q

Average Q=________

A

5L/min

36
Q

Total blood volume of a typical adult is ___ liters

A

5

37
Q

Ejection fraction:

______ of blood pumped out of the _____ ventricle with each beat

A

Proportion

Left

38
Q

EF=_____x_____x100%

A

SV

EDV

39
Q

EF averages ____% at rest

A

60

40
Q

______ blood pressure is the highest pressure within the vascular system generated during cardiac _______

A

Systolic

Contraction

41
Q

_______ blood pressure is the lowest pressure within the vascular system when the heart is _______

A

Diastolic

Relaxed

42
Q

Average blood pressure at rest:

A

120/80

43
Q

Blood flows from a region within the vessel of _______ pressure to a region within the vessel with _______ pressure

A

High

Lower

44
Q

Baroreceptors: stretch receptors in the _____ arch and _______ arteries that are sensitive to change in BP

A

Aortic

Carotid

45
Q

What are chemical receptors that relay information about the chemical environment

A

Chemoreceptors

46
Q

What are receptors that sense changes in muscle length and tension

A

Mechanoreceptors

EXSC 310 (19 decks)

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