Exam 1 Flashcards
(58 cards)
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
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
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
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
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
6
Q
The strongest muscle fiber is:
fast twitch IIX
fast twitch IIAC
slow twitch Ia
none of the above
A
fast twitch IIX
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
8
Q
CP is considered the “energy currency” for muscles.
A
false; ATP no CP
9
Q
The force production for slow twitch muscle fibers is:
high
very high
low
intermediate
A
low
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
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
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
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
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
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
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
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
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
19
Q
The term “ischemia” refers to:
arterial blockage
angina pectoris
claudification
lack of oxygen
A
lack of oxygen
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
21
Q
Small increases in physical activity can reduce the risk of coronary heart disease.
A
true
22
Q
Good coronary collateral circulation protects us against myocardial infarction.
A
true
23
Q
The smallest arteries in the body are:
feed arteries
arterioles
venules
capillaries
A
capillaries
24
Q
The vessel that carries “oxygenated” blood to the left atrium:
vena cava
pulmonary vein
aorta
pulmonary artery
A
pulmonary vein
25
```
The waiting chamber that contains blood with CO2 and very little oxygen:
left atrium
right atrium
left ventricle
right ventricle
```
right atrium
26
```
Chamber of the heart that sends blood to the lungs:
left atrium
right atrium
left ventricle
right ventricle
```
right ventricle
27
```
Chamber of the heart that sends blood to the aorta:
left atrium
right atrium
left ventricle
right ventricle
```
left ventricle
28
```
Which electrical wave on an ECG represents ATRIAL depolarization?
t-wave
p-wave
QRS-wave
s-t wave
r-wave
```
p-wave
29
```
Which electrical wave on an ECG indicates beat where ventricles are contracting?
t-wave
p-wave
QRS-wave
s-t wave
r-wave
```
QRS-wave
30
```
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
```
s-t wave
31
Time intervals on an ECG are measured on the vertical line.
false; current not time
32
Electrical impulses originate in the right atrium.
true
33
The R-R interval is used to determine heart rate.
true
34
Ischemia may show up on an ECG during exercise but may not be an indication of CHD.
true
35
```
To which of the following structures do the cross-bridges attach during muscle action?
actin
myosin
m-bridge
sarcolemma
```
actin
36
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
agility and local muscular endurance
37
```
Which of the following substances regulates muscle actions?
potassium
calcium
troponin
tropomyosin
```
calcium
38
```
Which of the following substances acts at the neuromuscular junction to excite the muscle fibers of a motor unit?
acetylcholine
ATP
creatine phosphate
serotonin
```
acetylcholine
39
```
Which of the following muscle fiber types is the most beneficial for a marathon runner?
type I
type IIA
type IIX
type IIC
```
type I
40
```
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
```
muscle spindle
41
From which of the following is the heart’s electrical impulse normally initiated?
AV node
SA node
the brain
SA node
42
```
Which of the following is the ultimate source of energy for muscular contraction?
GTP
oxygen
NADH
ATP
```
ATP
43
```
Which of the following substances can be metabolized anaerobically?
protein
carbohydrates
fat
glycerol
```
carbohydrates
44
The predominant energy system used during a training session depends on the:
session intensity
session duration
athlete’s training status
session intensity
45
```
he production of lactic acid results from the activation of which of the following energy systems?
phosphagen
slow glycolysis
fast glycolysis
fat oxidation
```
fast glycolysis
46
```
Which of the following energy systems has the highest rate of energy production?
phosphagen
fast glycolysis
fat oxidation
carbohydrate oxidation
```
phosphagen
47
Which of the following systems is predominantly active at the initiation of all exercise?
oxidative
phosphagen
slow glycolysis
phosphagen
48
```
Which of the following enzymes catalyzes the rate-limiting step of glycolysis?
PFK
isocitrate dehydrogenase
phosphorylase
lactate dehydrogenase
```
PFK
49
```
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
```
rest period
50
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
performing interval sprints
51
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
increased resting stroke volume
52
The three cardiovascular systems that are improved during aerobic training are: oxygen intake, transportation, and uptake.
true
53
All substrates are reduced to Acetyl-CoA before entering the Krebs cycle.
true
54
The standing chest pass is testing the frontal plane of motion.
false; sagittal plane not frontal
55
EPOC is a term used to indicate that we are in an oxygen deficit state.
false; EPOC repays debts
56
An anaerobic adaptation would be an increase in mitochondrial density.
false; aerobic
57
Symmetrical training means that one side of the body is being used.
false; asymmetrical
58
A workout is rated 9 METS which means the VO2 for that workout would be 27 mL/kg/min.
false, 31.5 mL/kg/min
