Exercise Physiology Practice Final

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Practice Final for exercise physiology

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