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Exercise Physiology Practice Final

156 Questions  I  By Kingslo
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Practice Final for exercise physiology

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