Chapter 6

Question 0

Major cardiovascular functions:

2. Removal of _____ and other metabolic waste

Answer 0

CO2

Question 1

Major cardiovascular functions:

1. Delivery of _____ and other nutrients

Answer 1

O2

Question 2

Major cardiovascular function:

3. Transportation of ________

Answer 2

Hormones

Question 3

Major cardiovascular functions:

4. _______regulation

Answer 3

Thermo

Question 4

Major cardiovascular functions:

5. Maintenance of ________ balance and overall body fluid balance

Answer 4

Acid-base

Question 5

Major cardiovascular functions:

6. _______ function

Answer 5

Immune

Question 6

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

Answer 6

Blood flow

Demands

Question 7

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

Answer 7

Thickness

Walls

Question 8

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

Answer 8

Left ventricle

Question 9

What node is known as the pacemaker

Answer 9

Sinoatrial or SA

Question 10

What node transmits an impulse from the atrium into the ventricle

Answer 10

Atrioventricular or AV node

Question 11

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

Answer 11

AV bundle

Question 12

What fibers are also known as terminal branches

Answer 12

Purkinje

Question 13

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

Answer 13

Vagus
ACh
Decrease

Question 14

At maximal vagal tone, HR = _______ beats/min

Answer 14

20-30

Question 15

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

Answer 15

Increases
Decreases
Epi/ not epi
Adrenal

Question 16

Maximal sympathetic stimulation, HR= _____ beats/ min

Answer 16

250

Question 17

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

Answer 17

60

100

Question 18

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

Answer 18

35

Question 19

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

Answer 19

PNS

Vagal

Question 20

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

Answer 20

Graphical

Electrical

Question 21

Resting heart rate below 60 bpm

Answer 21

Bradycardia

Question 22

Resting heart rate above 100 bpm

Answer 22

Tachycardia

Question 23

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

Answer 23

Skipped or extra

SA

Question 24

Three or more consecutive PVCs

Answer 24

Ventricular tachycardia

Question 25

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

Answer 25

Uncoordinated | Death

Question 26

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

Answer 26

One | Systole to systole

Question 27

______ is the contraction phase during which chambers ______ blood

Answer 27

Systole | Expel

Question 28

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

Answer 28

Diastole | Fill

Question 29

Stroke volume is the volume of blood pumped per ______

Answer 29

Contraction

Question 30

SV= _____-_____ (ml)

Answer 30

EDV | ESV

Question 31

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

Answer 31

Before

Question 32

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

Answer 32

After

Question 33

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

Answer 33

Minute

Question 34

Q= _____x______ (L/min)

Answer 34

HR | SV

Question 35

Average Q=________

Answer 35

5L/min

Question 36

Total blood volume of a typical adult is ___ liters

Answer 36

5

Question 37

Ejection fraction: | ______ of blood pumped out of the _____ ventricle with each beat

Answer 37

Proportion | Left

Question 38

EF=_____x_____x100%

Answer 38

SV | EDV

Question 39

EF averages ____% at rest

Answer 39

60

Question 40

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

Answer 40

Systolic | Contraction

Question 41

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

Answer 41

Diastolic | Relaxed

Question 42

Average blood pressure at rest:

Answer 42

120/80

Question 43

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

Answer 43

High | Lower

Question 44

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

Answer 44

Aortic | Carotid

Question 45

What are chemical receptors that relay information about the chemical environment

Answer 45

Chemoreceptors

Question 46

What are receptors that sense changes in muscle length and tension

Answer 46

Mechanoreceptors