Exercise Physiology Practice Final

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Practice Final for exercise physiology

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