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Exercise Physiology Practice Final

156 Questions  I  By Kingslo
Exercise Physiology Practice Final
Practice Final for exercise physiology

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