Bio 377- Exam 2
- 1.
Given that the net filtration of fluid out of teh capillaries averages about 3 liters per day, how is blood volume maintained in light of this apparent fluid loss?
- A.
Fluid is returned to the blood as lymphatic fluid by the lympatic system
- B.
The net filtration is equally balanced by absorption
- C.
Gravity moves the fluid to the lowest point in the body, where the fluid is absorbed
- D.
While fluid moves out across the capillary, it tneds to move inward across veins
- E.
The kidneys are involved in the reabsorption of the remaining fluid
Correct Answer
A. Fluid is returned to the blood as lymphatic fluid by the lympatic system -
- 2.
What blood vessel type has the greatest overall cross sectional area?
- A.
Arteries
- B.
Arterioles
- C.
Capillaries
- D.
Venules
- E.
Veins
Correct Answer
C. Capillaries -
- 3.
If a blood vessel contricted to a fourth of its original diameter, and assuming constant pressure, the flow rate of blood would be reduced to about _______ of its original flow rate?
- A.
1/4
- B.
1/8
- C.
1/16
- D.
1/64
- E.
1/256
Correct Answer
E. 1/256 -
- 4.
Which of the following substances is secreted by endothelial cells and causes vasodilation
- A.
Oxygen
- B.
Nitric oxide
- C.
Adenosine
- D.
Bradykinin
- E.
Endothelin-1
Correct Answer
B. Nitric oxide -
- 5.
An increases in blood flow to metabolically active tissue will cause an increase __________
- A.
Capillary diameter
- B.
Tissue hypoxia
- C.
Arteriolar resistance
- D.
Oxygen delivery
- E.
Blood pressure
Correct Answer
D. Oxygen delivery -
- 6.
If ESV=130 mls, heart rate 100 bpm, systolic BP=120 mm Hg, diastolic BP=80 mm Hg, EDV= 70 mls, then C.0=______ liters/min
- A.
About 6
- B.
About 10
- C.
About 15
- D.
About 20
- E.
Cannot be estimated ( insufficient information)
Correct Answer
A. About 6 -
- 7.
Which of the following is true of teh ventricular filling phase of the cardiac cycle?
- A.
Ventricular filling occurs during systole
- B.
All valves in the heart are open
- C.
Ventricular pressure is less than aortic pressure
- D.
Ventricular pressure is greater than atrial pressure
- E.
Ventricular pressure is decreasing
Correct Answer
C. Ventricular pressure is less than aortic pressure -
- 8.
If damage to the AV node slowed down conductin through this tisssure, what would be obeserved on an ECG?
- A.
A larger P wave
- B.
A longer P wave
- C.
A longer PR interval
- D.
A wider QRS complex
- E.
And inverted T wave
Correct Answer
C. A longer PR interval -
- 9.
This heart murmur is heard faintly during systole. It also can occur during a prolapse during which a valve does not close properly. The name of this heart murmur is_________
- A.
Mitral regurgitation
- B.
Aortic regurgitation
- C.
Mitral stenosis
- D.
Aortic stenosis
- E.
Patent ductus arteriosus
Correct Answer
A. Mitral regurgitation -
- 10.
The __________ carries deoxygeated blood to the lungs.
- A.
Inferior vena cava
- B.
Aorta
- C.
Pulmonary vein
- D.
Pulmonary artery
- E.
Superior vena cava
Correct Answer
D. Pulmonary artery -
- 11.
Chordae tendinae are strands of cnnective tissue extending from _______ to __________
- A.
Atria: ventricle
- B.
Inferior vena cava: right atrium
- C.
Aortic valves: ventriuclar myocardium
- D.
Semilunar valves: atrial myocardium
- E.
Av valves: papillary muscle
Correct Answer
E. Av valves: papillary muscle -
- 12.
What is the most common lethal inherited disease listed here?
- A.
Tuberculosis
- B.
Cystic fibrosis
- C.
Pleuropulmonary neolasm
- D.
Emphysema
- E.
Pneumonia
Correct Answer
B. Cystic fibrosis -
- 13.
Respiratory acidosis will result from a __________
- A.
Increase in blood CO2 concentration
- B.
Decrease in blood CO2 concentration
- C.
Increase in blood bicorbonate
- D.
Decrease in blood bicarbonate
- E.
Increase in carbon monoxide
Correct Answer
A. Increase in blood CO2 concentration -
- 14.
WHICH of the following will cause a shift in the hemoglobin- oxygen dissociating curve to the right?
- A.
Increase in temperature
- B.
Increase in plasma pH
- C.
Increase in 2,3-DPG
- D.
Both increase in temperature and increase in 2,3-dpg
- E.
All of these
Correct Answer
D. Both increase in temperature and increase in 2,3-dpg -
- 15.
Hyperventilation would lead to a __________ within the systemix arteries
- A.
Selective decrease in P02
- B.
Selective increase in P02
- C.
Selective decrease in Pco2
- D.
Increase in P02 and decrease in Pco2
- E.
Decrease in Po2 and increae in Pco2
Correct Answer
D. Increase in P02 and decrease in Pco2 -
- 16.
Pulmonary edema describes a condition where the upatake of oxygen and unloading of carbon dioxide is reduced as a consequence of a __________
- A.
Increase in the parital pressure of carbon dioxide in the blood
- B.
Thickening of the diffusion barrier
- C.
Decrease in the partial pressure of oxygen in the alveolus
- D.
Both increase in partial pressure of carbon dioxide in blood and thickening of diffusion barrier
- E.
Both increase in Pco2 in blood decrease in P02 in the alveolus
Correct Answer
B. Thickening of the diffusion barrier -
- 17.
IN regards to surfactant, all of the following are true except:
- A.
it is secreted form type 1 aveolar cells
- B.
A detergent that decreases surface tension
- C.
It increases lung compliance
- D.
It makes inspiration easier
- E.
Non of the above
Correct Answer
A. it is secreted form type 1 aveolar cells -
- 18.
Vital Capacity=
- A.
VT+ERV
- B.
VT+IRV+ERV
- C.
VT+ERV+IRV+RV
- D.
VT+IRV
- E.
ERV+IRV+RV
Correct Answer
B. VT+IRV+ERV -
- 19.
What benefit are corticosteroids in the treatment of asthma?
- A.
They induce bronchodilation
- B.
They induce bronchoconstriction
- C.
They reduce inflammation of the airways
- D.
They increase blood flow to the airways
- E.
They decrease mucus secretion into the airways
Correct Answer
C. They reduce inflammation of the airways -
- 20.
WHich is the best way to correct a collapses lung after a "Trauma" Pneumothorax?
- A.
Insert needle into pleural sac and allow air to escape
- B.
Insert needle into chest wall and allow air to escape
- C.
Insert needle into lung and apply pressure
- D.
Insert tube into chest wall and apply vacuum
- E.
Insert tube into pleural sac and apply vacuum
Correct Answer
E. Insert tube into pleural sac and apply vacuum -
- 21.
The primar inspiratory muscles are the __________
- A.
External and internal intercostals
- B.
Diaphragm and external intercostals
- C.
Diaphragm and internal intercostals
- D.
Diaphragm and the external and internal intercostals
- E.
Diaphragm and abdominal muscles
Correct Answer
B. Diaphragm and external intercostals -
- 22.
The ___________ functions primarily as teh region of the lungs where teh majority o fgas exchange occurs.
- A.
Respiratory bronchiole
- B.
Alveolar duct
- C.
Alveolus
- D.
Terminal bronchiole
- E.
Bronchus
Correct Answer
C. Alveolus -
- 23.
What attribute of veins allos them to function as a mjor reservoir of blood volume
- A.
They have a relatively large total cross sectional area
- B.
They have a relatively long average length and relatively low complaince
- C.
They have relatively long average length, and relatevely high compliance
- D.
A and B both contribute to that important attribute of veins
- E.
A and C both contribute to that important attribute of veins
Correct Answer
E. A and C both contribute to that important attribute of veins -
- 24.
As an O2 diffuses from lungs to blood, it passes thru the _____ before going thru the ________
- A.
Epithelial basement membrane: fluid and surfactant layer
- B.
Alveolar epithelium : epithelial basement membrane
- C.
Interstitial space: fluid and surfactant layer
- D.
Fluid and surfactant layer: alveolar space
- E.
None of the above are liekley directions for oxygen movement of blood
Correct Answer
B. Alveolar epithelium : epithelial basement membrane -
- 25.
Vitamin K defiiency is more closely associated with
- A.
Decreased synthesis of clotting agents
- B.
Deficiency of gene for specific coagulation factor
- C.
Reduced levels of vWF
- D.
Decreased ability to manufacture RBCs
- E.
Decreased ability to limit the number of RBCs
Correct Answer
A. Decreased synthesis of clotting agents -
- 26.
Most of the iron used by teh body is found in
- A.
Peroxidase
- B.
Cytochrome oxidate
- C.
The liver
- D.
Hemoglobin
- E.
The spleen
Correct Answer
D. Hemoglobin -
- 27.
What type of cell is the precursor for platelets
- A.
Neutrophils
- B.
Erythrocytes
- C.
Megakarycytes
- D.
Null cells
- E.
Macrophages
Correct Answer
C. Megakarycytes -
- 28.
Erythrocytes are synthesized in the __________ under the control of ___________
- A.
Liver : bilirubin
- B.
Bone marrow : erythropoietin
- C.
Kidney : transferrin
- D.
Liver : erythropoietin
- E.
Bone marrow : bilirubin
Correct Answer
B. Bone marrow : erythropoietin -
- 29.
If dissolved O2 in the vein is 100 m/l, the dissolved O2 in the artery is 200m/l, the O2 used by muscles is 100 mL/min, the O2 absorbed by the lungs is 400 ml/min, then C.O would be :*
- A.
About one and a third
- B.
About one and two thirds
- C.
About two
- D.
About five
- E.
About four
Correct Answer
E. About four -
- 30.
Given the following information, calculate the net filtration pressure : capillary hydrostatic pressure = 30mm Hg, interstitial fluid hydrostatic pressure= 5 mm Hg, capillary oncotic pressure =25 mm Hg, and interstitial fluid onctonic pressure=10 mm Hg
- A.
40 mm gh, favoring filteration
- B.
-40 mm Hg, favoring reabsorption
- C.
10 mm Hg , favoring filteration
- D.
-10 mm Hg, favoring reabsorption
- E.
0 mm Hg, no net force
Correct Answer
C. 10 mm Hg , favoring filteration -
- 31.
An incrase in the volume of blood ejected from the heart, with no change in total peripheral resistance, would __________
- A.
Elevate mean arterial pressure
- B.
Elevate central venous pressure
- C.
Reduce mean arterial pressure
- D.
Elevate pulmonary venous pressure
- E.
Reduce the stretch of the aorta
Correct Answer
A. Elevate mean arterial pressure -
- 32.
The one below lease likely to lead to edema ia:*
- A.
Blockage of lymph return
- B.
Decreased capillary permeability
- C.
Increased capillary pressure
- D.
Decreased plasma proteins
- E.
None of the above
Correct Answer
B. Decreased capillary permeability -
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Mar 22, 2022Quiz Edited by
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Dec 11, 2011Quiz Created by
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