Exercise Physiology Practice Final

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Practice Final for exercise physiology

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