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