Quiz
exercise physiology
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Questions in this quiz (19)
1which of the following is the correct definition for VO2 max
- Athe maximum consumption of oxygen measured during exercise
- Bthe minimum consumption of oxygen measured during exercise
- Cthe maximum consumption of oxygen measured during day to day life
- Dthe minimum consumption of oxygen measured during day to day life
2the oxygen cascade essentially depicts the fact that oxygen levels keep increasing the closer it gets to reaching the mitochondria
- ATrue
- BFalse
3oxygen deficit is where there is an immediate need for oxygen but a temporary shortage
- ATrue
- BFalse
4oxygen debt is where there is an immediate need for oxygen but a temporary shortage
- ATrue
- BFalse
5which of the following receptors monitors arterial blood
- Acentral chemoreceptors
- Bmechanoreceptors
- Cperipheral chemoreceptors
6which of the following receptors prevent the lung from over inflating
- Acentral chemoreceptors
- Bperipheral chemoreceptors
- Cmechanoreceptors
7THE REASON WHY ALVEOLAR VENTILATION INCREASES X20 DURING EXERCISE:
1) collateral motor fibres (from [blank_start]motor[blank_end] neurons) signal to the [blank_start]medulla[blank_end]
2) proprioreceptors in muscles, tendons and joints signal to the medulla via the [blank_start]spinal chord[blank_end]
3) [blank_start]increase[blank_end] body temperature
4) [blank_start]epinephrine[blank_end] release- Amotor
- Bsensory
- Crelay
- Dmedulla oblongata
- Ehypothalamus
- Fpre-frontal cortex
- Gnucleus accumbens
- Hspinal chord
- Ibrain stem
- Jincrease
- Kdecrease
- Lepinephrine
- Mserotonin
- Noxytocin
- Odopamine
8CARDIOVASCULAR RESPONSE TO EXERCISE:
1) exercise begins
2) mechanosensory input from the muscle to the [blank_start]descending[blank_end] pathway of the [blank_start]motor[blank_end] cortex
3) cardiovascular control center in [blank_start]medulla oblongata[blank_end]
4) [blank_start]sympathetic[blank_end] nervous system action
5) [blank_start]increase[blank_end] cardiac output and peripheral [blank_start]vasoconstriction[blank_end]
6) [blank_start]peripheral[blank_end] blood redistribution- Adescending
- Bascending
- Cmotor
- Dsensory
- Erelay
- Fmedulla oblongata
- Ghypothalamus
- Hnucleus accumbens
- Ipre-frontal cortex
- Jsympathetic
- Kparasympathetic
- Lincrease
- Mdecrease
- Nvasoconstriction
- Ovasodilation
- Pperipheral
- Qcentral
9CARDIOVASCULAR SYSTEM DURING EXERCISE:
-> an increased cardiac output is required and this is created by an increase in [blank_start]stroke volume[blank_end] and heart rate
-> increase venous return to match [blank_start]cardiac output[blank_end]
-> increase heart rate so the heart does [blank_start]not overstretch[blank_end]
-> decreased [blank_start]parasympathetic[blank_end] activity on the [blank_start]SAN[blank_end], [blank_start]sympathetic[blank_end] stimulation increases and therefore contractility increases as well as stroke volume. The heart rate increases to protect the heart from [blank_start]overfilling[blank_end]
-> slight increase in blood pressure, created by increase cardiac output. this is not responded by [blank_start]baroreceptors[blank_end]- Acardiac output
- Bstroke volume
- Cnot overstretch
- Dparasympathetic
- ESAN
- FAVN
- Gsympathetic
- Hoverfilling
- Ibaroreceptors
- Jmechanoreceptors
- Kchemorecptors
10TEMPERATURE CONTROL IN EXERCISE:
sweating:
1) [blank_start]increase[blank_end] in plasma osmolarity and [blank_start]decrease[blank_end] in plasma volume
2) thirst and renal conversion of water
increase cutaneous blood flow:
1) activation of the [blank_start]sympathetic vasodilation[blank_end] system
2) preferential initially, later water preservation- Aincrease
- Bdecrease
- Csympathetic vasodilation
- Dparasympathetic vasodilation
- Esympathetic vasoconstriction
- Fparasympathetic vasoconstriction
11during exercise which of the following mobilize liver glycogen and raise plasma glucose level
- Aglucagon
- Bcortisol
- Ccatecholamine
- Dgrowth hormones
12which of the following promotes the conversion of triglycerides to glycerol and fatty acids
- Aglucagon
- Bcortisol
- Ccatecholamine
- Dgrowth hormones
13during exercise:
there is an increase in plasma glucos level but a decrease in [blank_start]insulin[blank_end] secretion due to the [blank_start]supression[blank_end] of it by the [blank_start]sympathetic[blank_end] nervous system. however there is [blank_start]increased[blank_end] sensitivity to it in the muscle due to the increased number of [blank_start]GLUT[blank_end], which allows an increase glucose uptake in muscle. In skeletal muscle the most abundant source of ATP is [blank_start]creatine phosphate[blank_end], it is stored in muscles and donates a phosphate to ADP to yield ATP and [blank_start]creatine kinase[blank_end] catalyses this [blank_start]reversible[blank_end] reaction- Ainsulin
- Bglucagon
- Csupression
- Dactivation
- Esympathetic
- Fparasympathetic
- GGLUT
- HNa+ ion channels
- IK+ ion channels
- JCa2+ ion channels
- Kcreatine phosphate
- Lcreatine kinase
- Mreversible
- Nirreversible
- Oincreased
- Pdecreased
14where does glucose mostly come from in low intensity exercise
- Amostly fatty acids
- Bmix of fatty acids and glucose oxidation
- Cblood glucose and fatty acids
15where does glucose mostly come from in moderate intensity exercise
- Amostly fatty acids
- Ba mix of fatty acids and glucose oxidation
- Cblood glucose and fatty acids
16where does glucose mostly come from in high intensity exercise
- Ablood glucose and fatty acids
- Bmix of fatty acids and glucose oxidation
- Cmostly from fatty acids
17there i a direct relationship between exercise intensity and the body's demand for oxygen
- ATrue
- BFalse
18what are the cardiovascular changes during exercise
- ABP decreases as baroreceptors fire
- BBP, HR and venous return increase
- CHR increase, but venous return decreases
- Dmean arterial BP and cardiac ouptut decreases
- Evenous return increases, but BP remains the same
19what is the name of the body state, where after intense exercise, the additional oxygen must be taken up to metabolize lactic acid, replenish ATP, creatine phosphate and glycogen stores
- Aoxygen deficit
- Boxygen debt
- Coxygen surplus
- Dmyoglobin debt
- Epyruvic acid restoration
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- Adult 1 Quiz on exercise physiology , created by David alibhai on 13/05/2019.
- Author
- David alibhai
- Language
- English
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