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Exam 1 Flashcards

1
Q 
The sliding filament theory of concentric moving involves five different molecules plus calcium. Which of the following is NOT one of the five?
     troponin
     actin
     magnesium
     myosin
A

magnesium

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2
Q 
Which of the following activities occurs primarily in the transverse plane?
     shooting a basketball
     setting a volleyball
     punting a football
     swinging a bat
A

swinging a bat

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3
Q 
Which of the following increases as an adaptation to chronic resistance training but decreases as an adaptation to chronic aerobic training?
     glycogen stores
     mitochondrial density
     maximal power production
     creatine phosphate stores
A

maximal power production

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4
Q 
Which muscle fibers have the richest capillary supply?
     fast twitch IIX
     slow twitch Ic
     fast twitch IIA
     slow twitch Ia
A

slow twitch Ic

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5
Q 
Which muscle fiber has the largest amount of lactic acid buildup?
     fast twitch IIA
     slow twitch Ic
     fast twitch IIX
     none of the above
A

fast twitch IIX

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6
Q 
The strongest muscle fiber is:
     fast twitch IIX
     fast twitch IIAC
     slow twitch Ia
     none of the above
A

fast twitch IIX

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7
Q

Which fibers use oxygen to create force?
fast twitch IIA, X
slow twitch Ia
fast twitch IIC, A, and slow twitch Ic, a
fast twitch IIX and slow twitch Ic,a

A

fast twitch IIC, A, and slow twitch Ic, a

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8
Q

CP is considered the “energy currency” for muscles.

A

false; ATP no CP

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9
Q 
The force production for slow twitch muscle fibers is:
     high
     very high
     low
     intermediate
A

low

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10
Q 
Which of the following muscle fibers has the highest oxidative capacity?
     slow twitch Ic
     fast twitch IIC
     fast twitch IIA
     slow twitch Ix
A

slow twitch Ic

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11
Q 
In movement the role of the CORE includes:
     flexibility, strength, endurance
     balance, stabilization, positioning
     power, strength, stability
     posture, alignment, flexibility
A

balance, stabilization, positioning

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12
Q 
Which of the following is a test of agility?
     t-test
     1.5 mile test
     1RM power clean
    vertical jump
A

t-test

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13
Q 
Appropriate amount of ATP that is stored in the muscle:
     10 grams = 6 miles
     3 molecules = 10 sec of exercise
     5 molecules = 30 sec of exercise
     15 grams = 10 mile run
A

3 molecules = 10 sec of exercise

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14
Q 
Approximate amount of glycogen stored in muscle:
     10 grams = 6 miles
     3 molecules = 10 sec of exercise
     5 molecules = 30 sec of exercise
     15 grams = 10 mile run
A

15 grams - 10 mile run

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15
Q

A golfer who weighs 230 lbs plays golf pulling his clubs. This is rated as 4.3 METS. What would his VO2 max be for that workout and how many calories would he burn per minute?

A

VO2=15 mL/kg/min

7.5 cal/min

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16
Q

A 185 lb lacrosse player plays a game with a VO2 max of 55 mL/kg/min. How many METS would that be? How many calories would he burn if he played for 45 min?

A

15.71 METS

1040 cal for 45 min

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17
Q 
A myocardial infarction usually results from a blockage in which of the following arteries?
     carotid artery
     peripheral artery
     aorta
     coronary artery
     renal artery
A

coronary artery

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18
Q

Which of the following procedures involves putting a balloon-tipped catheter into a coronary artery and inflating the balloon to embed a metal mesh in the artery?
coronary artery bypass
angiography
intracoronary stent
percutaneous coronary angioplasty (PCA)
balloon angioplasty

A

balloon angioplasty

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19
Q 
The term “ischemia” refers to:
     arterial blockage
     angina pectoris
     claudification
     lack of oxygen
A

lack of oxygen

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20
Q 
Myocardial infarction refers to:
     angina pectoris
     lack of oxygen in heart
     heart attack
     death of ventricular muscle fibers
     c and d
A

c and d

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21
Q

Small increases in physical activity can reduce the risk of coronary heart disease.

A

true

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22
Q

Good coronary collateral circulation protects us against myocardial infarction.

A

true

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23
Q 
The smallest arteries in the body are:
     feed arteries
     arterioles
     venules
     capillaries
A

capillaries

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24
Q 
The vessel that carries “oxygenated” blood to the left atrium:
     vena cava
     pulmonary vein
     aorta
     pulmonary artery
A

pulmonary vein

25
Q 
The waiting chamber that contains blood with CO2 and very little oxygen:
     left atrium
     right atrium
     left ventricle
     right ventricle
A

right atrium

26
Q 
Chamber of the heart that sends blood to the lungs:
     left atrium
     right atrium
     left ventricle
     right ventricle
A

right ventricle

27
Q 
Chamber of the heart that sends blood to the aorta:
     left atrium
     right atrium
     left ventricle
     right ventricle
A

left ventricle

28
Q 
Which electrical wave on an ECG represents ATRIAL depolarization?
     t-wave
     p-wave
     QRS-wave
     s-t wave
     r-wave
29
Q 
Which electrical wave on an ECG indicates beat where ventricles are contracting?
     t-wave
     p-wave
     QRS-wave
     s-t wave
     r-wave
30
Q 
The electrical wave on an ECG that can indicate that ischemia is present is:
     t-wave
     p-wave
     QRS-wave
     s-t wave
     r-wave
31
Q

Time intervals on an ECG are measured on the vertical line.

A

false; current not time

32
Q

Electrical impulses originate in the right atrium.

33
Q

The R-R interval is used to determine heart rate.

34
Q

Ischemia may show up on an ECG during exercise but may not be an indication of CHD.

35
Q 
To which of the following structures do the cross-bridges attach during muscle action?
     actin
     myosin
     m-bridge
     sarcolemma
36
Q

A college baseball player was tested 10 weeks before the start of the season with these results: t-test : 11.6 sec, 1 min sit-up: 37, vertical jump: 24 in. Which of the following needs to be improved in the pre-season training program?
agility and muscular strength
power and local muscular endurance
power and muscular strength
agility and local muscular endurance

A

agility and local muscular endurance

37
Q 
Which of the following substances regulates muscle actions?
     potassium
     calcium
     troponin
     tropomyosin
38
Q 
Which of the following substances acts at the neuromuscular junction to excite the muscle fibers of a motor unit?
     acetylcholine
     ATP
     creatine phosphate
     serotonin
A

acetylcholine

39
Q 
Which of the following muscle fiber types is the most beneficial for a marathon runner?
     type I
     type IIA
     type IIX
     type IIC
40
Q 
When throwing a baseball an athlete’s arm is rapidly stretched just prior to throwing the ball.  Which of the following structures detects and responds to that stretch by reflexively increasing muscle activity?
     golgi tendon organ
     muscle spindle
     extrafusal muscle
     pacinian corpuscle
A

muscle spindle

41
Q

From which of the following is the heart’s electrical impulse normally initiated?
AV node
SA node
the brain

42
Q 
Which of the following is the ultimate source of energy for muscular contraction?
     GTP
     oxygen
     NADH
     ATP
43
Q 
Which of the following substances can be metabolized anaerobically?
     protein
     carbohydrates
     fat
     glycerol
A

carbohydrates

44
Q

The predominant energy system used during a training session depends on the:
session intensity
session duration
athlete’s training status

A

session intensity

45
Q 
he production of lactic acid results from the activation of which of the following energy systems?
     phosphagen
     slow glycolysis
     fast glycolysis
     fat oxidation
A

fast glycolysis

46
Q 
Which of the following energy systems has the highest rate of energy production?
     phosphagen
     fast glycolysis
     fat oxidation
     carbohydrate oxidation
A

phosphagen

47
Q

Which of the following systems is predominantly active at the initiation of all exercise?
oxidative
phosphagen
slow glycolysis

A

phosphagen

48
Q 
Which of the following enzymes catalyzes the rate-limiting step of glycolysis?
     PFK
     isocitrate dehydrogenase 
     phosphorylase
     lactate dehydrogenase
49
Q 
Decreasing which of the following variables will, with training, cause an increase in the capacity of the lactic acid energy system to produce ATP?
     exercise intensity
     rest period
     training frequency
     exercise duration
A

rest period

50
Q

Improving speed-endurance can BEST be accomplished by which of the following?
performing interval sprints
performing longer duration aerobic endurance training
increasing the number of ballistic stretches following the workout
increasing the intensity of the aerobic endurance workouts

A

performing interval sprints

51
Q

After consistently following an aerobic endurance training program for 6 months, a previously untrained individual will experience which of the following physiological changes?
decreased maximal tidal volume
increased resting stroke volume
decreased resting a-v02 difference

A

increased resting stroke volume

52
Q

The three cardiovascular systems that are improved during aerobic training are: oxygen intake, transportation, and uptake.

53
Q

All substrates are reduced to Acetyl-CoA before entering the Krebs cycle.

54
Q

The standing chest pass is testing the frontal plane of motion.

A

false; sagittal plane not frontal

55
Q

EPOC is a term used to indicate that we are in an oxygen deficit state.

A

false; EPOC repays debts

56
Q

An anaerobic adaptation would be an increase in mitochondrial density.

A

false; aerobic

57
Q

Symmetrical training means that one side of the body is being used.

A

false; asymmetrical

58
Q

A workout is rated 9 METS which means the VO2 for that workout would be 27 mL/kg/min.

A

false, 31.5 mL/kg/min

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