Exercise Physiology Practice Final

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Practice Final for exercise physiology

  
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1.  Arteries in the coronary circulation originate 
A.
B.
C.
D.
2.  After leaving the myocardium, blood from the coronary circulation enters the coronary sinus
A.
B.
3.  The pulmonary circuit
A.
B.
C.
D.
4.  The systemic circulation begins at the left side of the heart
A.
B.
5.  The myocardium receives blood from the arota
A.
B.
6.  Cardiac muscle tissue is also known as endocardium
A.
B.
Discuss this Question
7.  Function of this later of the heart serves as a lubricative outer covering
A.
B.
C.
D.
8.  The myocardium is mainly aerobic
A.
B.
9.  The energy for the myocardium is mainly carbohydrates
A.
B.
10.  An untrained individual may have 30 percent of cardiac injury from a myocardial infarction
A.
B.
11.  The cardiac cycle has 2 phases
A.
B.
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12.  Ventricular Systole is the first phase of the cardiac cycle
A.
B.
13.  Ventricular diastole is when the ventricles are relaxed/relaxing
A.
B.
14.  During isovolumetric contraction (check all that apply)
A.
B.
C.
D.
15.  During isovolumetric relaxation
A.
B.
C.
D.
E.
16.  The atria contract during ventricular diastole
A.
B.
17.  The atria relaxes during ventricular systole
A.
B.
18.  The ventricles contract ___ sec after the atria
A.
B.
C.
D.
E.
19.  Resting systole of the ventricles is longer than diastole
A.
B.
20.  Systole during heavy exercise is longer than diastole during heavy exericse
A.
B.
21.  The heart at rest beats at ____ bpm
A.
B.
C.
D.
22.  During heavy exercise, the heart beats at ___ bpm
A.
B.
C.
D.
23.  What is considered normal blood presssure?
A.
B.
C.
D.
24.  Systolic pressure provides an indication of peripheral resistance
A.
B.
25.  Pulse pressure is the difference between systolic and diastolic pressure
A.
B.
26.  Which formula is correct in calculating the Mean Arterial Pressure
A.
B.
C.
D.
27.  Blood pressure above ____ is known as high blood pressure
A.
B.
C.
D.
28.  Hypertension can cause(check all that apply)
A.
B.
C.
D.
29.  Cardiac output and total vascular resistance influence mean arterial pressure
A.
B.
30.  An increase in blood pressure results in
A.
B.
C.
D.
31.  Long term regulation by the mean arterial blood pressure is influenced by
A.
B.
C.
D.
32.  An decrease in blood pressure results in an increase in sympathetic nervous system activity
A.
B.
33.  When blood viscosity increases, blood pressure decreases
A.
B.
34.  When blood volume increases, blood pressure increases
A.
B.
35.  When heart rate increase, blood pressure increases
A.
B.
36.  When peripheral resistance decreases, blood pressure increases
A.
B.
37.  Contraction of the heart depends on electrical stimulation of the _________
A.
B.
C.
D.
38.  The pacemaker of the heart is known as the _________
A.
B.
C.
D.
39.  The _________ consists of autorhythmic cells
A.
B.
C.
D.
40.  Autorhythmic cells depolarize spontaneously 
A.
B.
41.  Baroreceptors are activated/stimulated when BP is too low
A.
B.
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42.  The ______ represents atrial depolarization 
A.
B.
C.
D.
43.  The ECG may indicate coronary heart disease
A.
B.
44.  The QRS complex represents ____________
A.
B.
C.
D.
45.  An ST segment depression indicates myocardial infarction 
A.
B.
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46.  One should stop exercise if their exercise induced ST segment is greater than 1 mm
A.
B.
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47.  A T wave inversion is an indicator of ischemia
A.
B.
48.  Atherosclerosis is fatty plaque that narrows the aorta
A.
B.
49.  The amount of blood pumped by the heart each minute is known as the _________
A.
B.
C.
D.
50.  The number of beats per minute is known as the heart rate
A.
B.
51.  Amount of blood ejected in each beat is known as the _______
A.
B.
C.
D.
52.  The average cardiac output is 6 L/m
A.
B.
53.  The vagus nerve regulates the heart rate via the sympathetic nervous system
A.
B.
54.  Beta blocking drugs increase heart rate
A.
B.
55.  Beta blocking drugs increase the myocardial oxygen demand
A.
B.
56.  An ejection fraction of less than ___ indicates myocardial contraction
A.
B.
C.
D.
57.  During the Frank Starling mechanism, increase preload will stretch the sarcomere from _______
A.
B.
C.
D.
58.  Venoconstriction is stimulated by the SNS
A.
B.
59.  Strength of ventricular contraction is enhanced by acetylcoline
A.
B.
60.  The heart cannot be excited if the sympathetic neurons connecting to it are cut off
A.
B.
61.  Plasma contains(check all that apply)
A.
B.
C.
D.
62.  Plasma is the portion of  blood that repairs injuries
A.
B.
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63.  Hematocrit is a % by volume of packed blood cells after centrifugation
A.
B.
64.  Resistance depends on 
A.
B.
C.
D.
65.  Blood flow is inversely proportional to resistance
A.
B.
66.  Which vessels create the most resistance
A.
B.
C.
D.
67.  Oxygen demand by muscles during exercise is 10 - 15x greater than at rest.
A.
B.
Discuss this Question
68.  Max heart rate is found by subtracting ones age from 230
A.
B.
69.  During exercise, the SV plateaus at approx. 40-60% of VO2 max
A.
B.
70.  Sedentary individuals typically have a resting SV of 
A.
B.
C.
D.
71.  Endurance athletes typically have a stroke volume of 160 - 200 ml during exercise
A.
B.
72.  Increased HR is due to an increase in cardiac output 
A.
B.
73.  At rest, what is the filling time of the heart?
A.
B.
C.
D.
74.  At 150 - 200 beats per min, approx how long does it take to fill the heart
A.
B.
C.
D.
75.  VO2 = Cardio Output x VO2 difference; which equation is this?
A.
B.
C.
D.
E.
76.  At rest, ____ of blood is distributed to to muscles
A.
B.
C.
D.
77.  During maximal exercise, 80 - 85% of blood is distributed to working muscles
A.
B.
78.  Vasoconstriction to visceral organs and inactive tissues are due to the SNS
A.
B.
79.  Nitric Oxide is produced in the mesothelium 
A.
B.
80.  _______ promotes smooth muscle relaxation
A.
B.
C.
D.
81.  At the onset of exercise, parasympathetic nerves fire thus increasing the HR 
A.
B.
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82.  As the VO2 max increase the double product decreases
A.
B.
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83.  A rough index of workload on the heart is also known as
A.
B.
C.
D.
84.  During incremental exercise (check all that apply)
A.
B.
C.
D.
85.  During prolonged exercise, cardiac output is decreases
A.
B.
86.  During prolonged exercise, the cardiac output is maintained due to a decrease in stroke volume and an increase in HR.
A.
B.
87.  Receptors that are sensitive to force and speed of muscular movement
A.
B.
C.
D.
88.  Receptors that are sensitive to muscle metabolites
A.
B.
C.
D.
89.  Receptors that are sensitive to change in arterial blood pressure.
A.
B.
C.
D.
90.  Random movement of molecules from an area of high concentration to an are of lower concentration is known as osmosis
A.
B.
Discuss this Question
91.  The __________ lines the thoracic wall
A.
B.
C.
D.
92.  The intrapleural pressure is lower than atmospheric pressure
A.
B.
93.  Which zone warms and humidifies the air?
A.
B.
C.
94.  What is atmospheric pressure at rest?
A.
B.
C.
D.
95.  At rest, expiration is passive
A.
B.
96.  Current eveidence suggests that respiratory muscles fatigue at prolonged exercise lasting more than
A.
B.
C.
D.
97.  Which is the current formula for Air Flow?
A.
B.
C.
D.
98.  Shortness of breathing is termed
A.
B.
C.
D.
99.  Excessive mucus blocked in the airways
A.
B.
C.
D.
100.  Airway collapse; air is trapped in the lungs
A.
B.
C.
D.
101.  Chronic obstructive lung disease is linked with an increased expiratory airflow and an decreased inspiratory airflow due to constant airway narrowing
A.
B.
102.  Amount of air moved per breath (normal breathing)
A.
B.
C.
D.
Discuss this Question
103.  Volume of air space that reaches the respiratory zone
A.
B.
C.
D.
104.  The tidal volume x the alveolar ventilation will give you the amount of air moved in and out of the lungs per minute
A.
B.
105.  The amount of air moved in and out of the lungs per min
A.
B.
C.
D.
106.  The alveolar ventilation + dead space ventilation = pulmonary ventilation
A.
B.
107.  The vital capacity is 
A.
B.
C.
D.
108.  The typical value for the tidal volume is 
A.
B.
C.
D.
109.  The typical lung capacity is at
A.
B.
C.
D.
110.  When standing, most of the blood goes to the apex of the lung
A.
B.
111.  The systemic circulation has lower pressure than the pulmonary circulation 
A.
B.
112.  Deoxyhemoglobin is simply hemoglobin carrying carbon dioxide 
A.
B.
113.  The Ocontent of blood (100% Hb saturation) for males is typically
A.
B.
C.
D.
114.  The O2 content of blood (100% Hb saturation) for females is typically
A.
B.
C.
D.
115.  Each gram of Hb can transport ____
A.
B.
C.
D.
116.  Low partial pressure in the tissues increases the the chance of O2 release to tissues by Hb
A.
B.
117.  Decreased pH increases the Hb-O2 affinity thus resulting in a rightward shift of the curve
A.
B.
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118.  Which of the following causes a rightward shift of the dissociation curve(check all that apply)
A.
B.
C.
D.
119.  Hemoglobin has a higher affinity for O2 than myoglobin
A.
B.
120.  Carbonic anhydrase converts CO2 and water into Bicarbonate
A.
B.
121.  How much % of CO2 is dissolved in the plasma
A.
B.
C.
D.
122.  When HCO3- diffuses out of the RBC's into plasma
A.
B.
C.
D.
123.  Hydrogen binds to Hb to prevent acidity
A.
B.
124.  Carbon dioxide that is bound to hemoglobin is called carbaminohemoglobin
A.
B.
125.  HCO3- is a strong acid
A.
B.
126.  Over __ of the O2 transported in blood is chemically bonded with hemoglobin
A.
B.
C.
D.
127.  Carbon dioxide is transported in ONLY 3 blood forms
A.
B.
128.  __ of CO2 is found in the blood is transported as bicarbonate
A.
B.
C.
D.
129.  An increase in pulmonary ventilation causes exhalation of additional CO2, which results in a reduction of blood PCO2 and a lowering of hydrogen ion concentration
A.
B.
130.  During prolonged submaximal exercise in a hot/humid environment, ventilation tends to shift downward
A.
B.
Discuss this Question
131.  In an untrained subject doing incremental exercise, ventilation increases linearly up to 
A.
B.
C.
D.
132.  The inflection point where VE increases exponentially is known as the respiratory threshold 
A.
B.
133.  Arterial PO2 and PCO2 are maintained relatively constant during a sub maximal exercise
A.
B.
134.  During prolonged exercise in a hot/humid environment, ventilation "drifts" upward due to the influence of rising body temperature on the respiratory control center
A.
B.
135.  Which part of the brain is is the respiratory control center?
A.
B.
C.
D.
136.  When the diaphragm contracts, the lungs __________
A.
B.
C.
D.
137.  Central chemoreceptors are located in the___________
A.
B.
C.
D.
138.  The diaphragm is innervated by somatic motor neurons
A.
B.
139.  Specialized cells located in the aortic and carotid bodies
A.
B.
C.
D.
140.  There are 2 types or Humoral receptors
A.
B.
141.  Ventilation control during exercise is fine tuned by ____________
A.
B.
C.
D.
142.  During heavy or submaximal exercise, a linear rise in ventilation is due to _________(check all that apply)
A.
B.
C.
D.
E.
143.  The primary drive to increase ventilation during exercise in from higher brain centers
A.
B.
144.  Training can eventually change the structure of the lungs so it could take up more oxygen.
A.
B.
145.  Training can lower exercise ventilation 20 - 30% lower at the same submaximal work rate
A.
B.
146.  Current evidence suggests that the normal rhythm of breathing is generated by the interaction between _____ separate respirator rhythm centers located in the medulla oblongata and the pons.
A.
B.
C.
D.
147.  At rest, the breathing rhythm is dominated by pacemaker neurons in the 
A.
B.
C.
D.
148.  During exercise, the preBotzinger Complex interacts with _________ along with two additional regulatory centers in the pons to regulate breathing
A.
B.
C.
D.
149.  The respiratory control center uses only negative feedback to achieve tight control
A.
B.
150.  The central chemoreceptors are sensitive to increases in ______ and decreases in pH
A.
B.
C.
D.
151.  The peripheral chemoreceptors are sensitive to increases in PCO2 and decreases in PO2 or pH
A.
B.
152.  Receptors that are sensitive to an increase in PCO2 exist.
A.
B.
C.
153.  In regards to peripheral chemoreceptors 
A.
B.
C.
154.  There is new evidence that respiratory muscle fatigue does occur during high intensity exercise (>90% VO2 max)
A.
B.
155.  _________ of elite endurance athletes experience hypoxemia during high intensity exercise (>90% VO2 max)
A.
B.
C.
D.
156.  The pulmonary system limits exercise performance in healthy young subjects during prolonged submaximal exercise (work rates (<90% VO2 max)
A.
B.
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