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