Human Anatomy and Physiology II
Exam 3, Version 7 - April 24, 1998
Dr. Chabot
Multiple Choice (@2 points): Circle the letter of the one best answer. GOOD LUCK!
Answer only 30 out of 33! The first 30 answered will be graded.
Please place an "X" beside those three questions that you do not want graded.
1. Which of the following is not a function of red blood cells?
A. transportation of O2
B. transportation of CO2
C. protection (against "foreign invaders")
D. none of the above
2. People with type A blood can receive blood from people with type:
A. A blood
B. O blood
C. B blood
D. A and B only
E. All of the above
3. The function of monocytes is to:
A. act as phagocytes
B. produce heparin or histamine
C. help to control allergic reactions
D. produce antibodies or killer T cells
4. Approximately what percentage of O2 is carried bound to hemoglobin in the blood?
A. 12
B. 29
C. 58
D. 98
5. Electrical activity (stimulation) can spread readily through cardiac tissue because of the:
A. release of neurotransmitter
B. serous tissue surrounding the heart
C. chemical synapses between cells
D. gap junctions between the cells
E. all of the above
6. Blood will flow from the left ventricle into the:
A. pulmonary arteries
B. pulmonary veins
C. aorta
D. left atrium
7. Lymph nodes function to
A. filter out micro-organisms in lymph
B. pump lymph through the lymphatic system
C. produce red blood cells
D. A and B only
8. The enzyme carbonic anhydrase generally:
A. converts CO2 into HCO3- in the body
B. converts HCO3- into CO2 in the lungs
C. is found inside red blood cells
D. all of the above
9. When the vagus nerve is stimulated:
A. heart rate goes up
B. heart rate goes down
C. the heart beats faster
D. none of these
10. Red blood cell production is controlled or affected by:
A. a decrease in O2 levels in the blood
B. an increase in O2 levels in the blood
C. erythropoietin
D. all of the above
11. The portion of the EKG that indicates the depolarization of the ventricles is the:
A. P potential
B. QRS complex
C. T potential
D. U potential
12. _________ in/of the skin is part of the "non-specific" defenses against micro-organisms.
A. Sweating
B. Continual sloughing off of cells
C. Low pH
D. Sebum
E. All of the above
13. While the lymphatic system has no central pump like the circulatory system, lymph is moved by
A. smooth muscles in the walls of lymph vessels
B. the action of the skeletal (somatic) muscles
C. smaller pumps located in the nodes
D. A and B only
14. Risk factors for artherosclerosis do not currently include:
A. a diet high in sugar content
B. age
C. a diet high in saturated fat content
D. smoking
15. Blood is delivered to within less than 1 mm of every cell in the heart by:
A. diffusion through the ventricular and atrial walls
B. capillary beds in the heart tissue
C. the left and right cardiac arteries
D. the pulmonary circulatory vessels
16. Blood travels from the pulmonary artery into:
A. the pulmonary vein
B. the left atrium
C. the right atrium
D. the lungs
17. Which of the following statements is not true about capillaries?
A. They contain smooth muscles in their walls
B. They are exceptionally thin-walled
C. They allow some fluid to leak out of them and into the tissues
D. They allow diffusion to take place through their walls
18. The _____ is the part of the heart that conducts action potentials from the atria to the apex of the heart.
A. SA node
B. AV node
C. Bundle of His
D. left atrium
19. Which of the following is not true about arteries and veins?
A. they are both very distensible (elastic)
B. Arteries are more muscular
C. Arteries always have high O2 levels
D. Veins usually have low O2 levels
20. Pacemaker cells are spontaneously active due to:
A. the constant leak of Na+ ions into the cell
B. the K+ channel opening up upon depolarization
C. voltage dependent Na+ channels
D. the constant leak of Ca++ ions into the cell
21. Which of the following tissues would have the lowest density of capillaries?
A. the heart
B. adipose tissue
C. fast glycolytic skeletal muscle fibers
D. the brain
22. The organ(s) that function(s) to filter blood, remove worn out RBCs and produce WBCs is (are) the
A. thymus gland
B. lymph nodes
C. tonsils
D. spleen
23. Which of the following can cause a change in heart rate?
A. a change in body temperature
B. a change in emotional state
C. a change in artery stretch receptor information
D. all of these
24. An Rh negative mother will need to receive gamma globulin shots to protect her 2nd unborn child if:
A. the father is Rh negative and the first baby born to this mother was Rh positive
B. the father is Rh positive the first baby born to this mother was Rh positive
C. the father is Rh negative and the first baby born to this mother was Rh negative
D. the father is Rh positive and the first baby born to this mother was Rh negative
25. A difference between HDL and LDL metabolism is that:
A. there are no HDL receptors in arteries
B. there are no LDL receptors in arteries
C. there are no LDL receptors in the liver
D. there are fewer LDL receptors in the liver
26. Blood pH can be regulated by:
A. the kidney
B. what you eat
C. the digestive tract
D. none of the above
27. During normal inspiration and expiration the "renewal rate" of lung air is approximately:
A. 80%
B. 60%
C. 50%
D. 25%
28. The pH (Bohr) effect:
A. increases Hb O2 affinity in the body tissues and decreases Hb O2 affinity in the lungs
B. decreases Hb O2 affinity in the body tissues and increases Hb O2 affinity in the lungs
C. has no effect on Hb O2 affinity
D. always increases Hb O2 affinity in all parts of the body
29. When you exercise which of the following does not happen:
A. your heart rate can increase to as high as 200 beats/min temporarily
B. the density of capillaries in your heart can increase over the long-term
C. the stroke volume often decreases
D. over the long term the heart muscle can increase in size
30. The most common type (by volume) of blood cell is a(n):
A. erythrocyte
B. leukocyte
C. thrombocyte
D. lymphocyte
31. The function of platelets is to:
A. assist in antibody production
B. carry O2 in the blood
C. act as macrophages
D. none of the above
32. A protein produced in the liver and functions to carry hormones and maintain osmotic pressure is:
A. fibrinogen
B. albumin
C. globulin
D. none of the above
33. When a cut occurs and bleeding results which of the following happens first?
A. Platelets become sticky and begin the clotting reaction
B. The blood clots
C. Heart rate immediately increases
D. The person goes into shock
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FILL-INS (@2 points):
Complete the following sentences with the most appropriate (one) word.
Choose 10 out of 12 only.
1. Respiration rate is regulated primarily by _______ levels in the blood.
2. The "good cholesterol" in your blood is known as ________.
3. When the coronary arteries are clogged a patient may undergo __________________________.
4. The receptors for regulating respiration rate are located in the ____________.
5. The _________ prevents food from going into your trachea.
FILL-INS (cont.)
6. The small sacs in the lungs where gas exchange takes place are called ___________.
7. Your approximate tidal volume is ___________ mls.
8. At the end of a forced expiration the amount of space that is filled with air in your respiratory system is called ____________ ____________.
9-11. List three functions of the lymphatic system
________________________
________________________
________________________
12. The fluid that leaks out of capillaries differs from blood in that it lacks _______________________.
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Essay/Short Answer (@ 10 pts). Answer only 2 of the following 3. The first 2 answered will be graded.
1) Draw and label the respiratory system.
2) Draw and label a diagram showing the effects of temperature on the affinity of hemoglobin for oxygen. Be sure to provide labels that would indicate how this graphed "effect" might/does affect human physiology.
3) List and describe the types of digestion that take place as food goes from the mouth to the stomach.