Exercise Physiology Final (Test 3)

45 terms by karynHEARTSyou

Create a new folder

Advertisement Upgrade to remove ads

true

the skeletal and circulatory systems both assist in maintenance of body temperature.

false

muscle cells are capable of mitosis (cell division)

nuclei

what do satellite cells contribute to damaged muscle that enables repair?

sarcoplasmic reticulum

the storage site for calcium in the skeletal muscle cell.

acetylcholine

the neurotransmitter released at the neuromuscular junction as the result of depolarization of neuron

tropomyosin

the protein covers binding sites on an actin molecule in a muscle at rest

number of active cross bridges

the factor that is primary determinant of force prodcution in a single skeletal muscle cell

myosin ATPase isoform

the biochemical property of skeletal that is the key factor that regulates contraction velocity (Vmax)

type 1

type of skeletal muscle fiber that contain the greatest number of mitochondria

type IIx

type of skeletal muscle fiber that has the greatest Vmax (contraction velocity)

placing the muscle in a starting position in which it is contracted slightly below its resting length

this would not contribute to increased force production in an entire muscle

type II skeletal cells

aging is associated with sarcopenia, and this process is most pronounced in ___

decreases

as movement speed increases, force prodcution ___.

myocardium

the muscular layer of the heart responsible for muscular contraction

systole

refers to ventricular contraction

diastole

refers to ventricular relaxtion

false

cardiac cells have satellite cells.

all of the above

which of the following effects does exercise have on myocardial infarction?
-reduces the chance of occurrence
-reduces the number of cardiac cells that die during ischemia
-increases survival rate

diastole

the part of the cardiac cycle affected to the greatest extent during exercise...

blood pressure

the force exerted by blood on the arterial walls.

q= hr x sv

the equation for cardiac output

kidneys

the organ responsible for the long term regulation of blood pressure

SA node

considered the pacemaker of the heart

atrial depolorization

reflected in the P wave of an ECG

ventricular depolarization and atrial repolarization

reflected in the QRS complex of an ECG.

ventricular repolarization

reflected in the T wave of an ECG.

acetylcholine; decrease

neurons of the parasympathetic nervous system release __ at its nerve terminals on the SA node __ heart rate.

removal of parasympathetic input

change in nervous system outflow that is responsible for the initial increase of exercise.

false

trained and untrained females have similar resting cardiac ouptuts

increase

according to the Frank-Starling law of the heart, an increase in end-diastolic volume will __ the force of contraction and thus volume of blood pumped by the heart per beat

stroke volume

the amount of blood pumped by the heart per beat

false

elevated mean arterial pressure will increase stroke volume.

true

the intensity of exercises decreases the amount of vasodilation and blood flow to active muscle.

double product

indicates the metabolic demand placed on the heart

false

leg exercise elicits higher heart rates and blood pressures than arm exercise

SV decreases and HR increases

accurately describes how cardiac output is maintained during prolonged sub maximal at a fixed intensity

false

pulmonary respiration and cellular respiration refer to the same process

alveoli

part of respiratory system where actual gas exchange occurs

diaphragm

during normal quiet breathing at rest, inspiration is driven primarily by the...

false

at rest, expiration is an active muscular process.

constant

the most accurate description of the frequency of airway resting COPD

tidal volume

the lung volume that represents the amount of air inhaled or exhaled in 1 normal breath

vital capacity

lung volume that represents the amount of air that can be forcefully exhaled following a maximal test. (expiratory reserve volume + tidal volume + inspiratory reserve volume)

pulmonary ventilation

refers the movement of air into and out of the lungs.

tennis court

estimated that the total lung surface of lung is approximately the size of a ___.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set