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Exercise Physiology Practice Final

156 Questions  I  By Kingslo
Fitness Quizzes & Trivia
Practice Final for exercise physiology

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