Exercise Physiology Practice Final

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Practice Final for exercise physiology

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