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Exercise Physiology > Continued > Flashcards

Continued Flashcards

1
Q

Causes a ionotropic effect

A

Digitalis

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2
Q

Hardening of heart. Leads to a decreased SV

A

Aortic stenosis

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3
Q

Factors effecting increased EDV(preload)

A

Increased filling time

Increased VR

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4
Q

What physiological factors influence resistance to blood flow

A

Length of the vessel
Viscosity of blood
Radius of blood vessel

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5
Q

Describe short term regulation of BP

A

Adjustment of CO and TPR

total blood volume

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6
Q

Right atria detects the rate of stretch and causes heart to catch up

A

Bainbridge effect

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7
Q

What causes a non plateau in SV

A

Increased myocardial contractility
Increased left ventricular diameter and mass
Increased ventricular ejection time v

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8
Q

What muscle gets the most blood flow going from rest to exercise

A

Skeletal

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9
Q

If there is too much blood flow to one area this _________ will tell the brain to redistribute blood to another area

A

Pressure reflex

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10
Q

Breaks surface tension for gas to move through

A

Surfactant

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11
Q

What are the accessory muscles for inspiration

A

Ext&internal intercostals
Diaphragm
Scalean

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12
Q

What are the accessory muscles for expiration

A

Ext/internal abdominal
Oblique
Rectus abdominus

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13
Q

When you breath in the pressure decreases of increases

A

Decreases

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14
Q

Where is the greatest resistance to air flow encountered

A

Medium sized bronchi

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15
Q

What factors alter air flow

A

Neural
Chemical
Mucus

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16
Q

3 things that are very important for gas exchange in blood

A

Thin
Partial pressure gradients and solubility
Ventilation perfusion matching

17
Q

How is co2 transported in the blood

A

Combine to hemoglobin
Dissolve in plasma
Converted to bicarbonate

18
Q

How is oxygen carried in blood

A

Hemoglobin

19
Q

HR is so high there is a ventilation diffusion

A

Exercise induced hypoxia

20
Q

Breaking the theoretical threshold to force adaptations at a higher level

A

Overload

21
Q

Maximal ability to use O2 to utilize energy through aerobic pathways

A

VO2 max

22
Q

Higher you live there is less______

A

Partial pressure

23
Q

Ppl that have a lower set point than someone else and perform the same workout over time will have a greater increase in performance percentage wise

A

Diminishing returns

24
Q

Ion strength build up. More calcium which equals larger Q and creates a larger contractility

A

Ionotropy

Exercise Physiology (6 decks)

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