1. Provide a definition of each term below, including its significance to physiology. (20 points)
- Vital Capacity
- Dead space
- Bohr shift
- monocyte
- mean BP
- cardiac output
- active hyperemia
- extra-systole
-loop of Henle
- tubular reabsorption
2. In the process of inhalation, each of the following parameters changes. Rewrite them in the proper seqence, and indicate with arrows (upward or downward) which way they change. (10 points)
Thoracic pressure
Thoracic volume
Alveolar pressure
Alveolar volume
Force of muscle contraction
3. With regard to the control of ventilation, answer the following. (10 points)
A. Identify the integrator, and explain how the basic ventilation pattern is generated.
B. Identify the effectors, and the type of imput they receive.
C. Identify the sensory receptors that influence the integrator, and where each is located.
(5 points)
5. For each item, give the role(s) it plays in the hemostasis process. (10 points)
- platelets
- mast cells
- collagen
- fibrin
-thrombin
- other clotting factors
6. Rewrite the following events of the cardiac cycle in the proper sequence, starting with the SA node depolarization. On the same line, then indicate if the event occurs in ventricular systole (S) or diastole (D) and if it is an electrical (E) or mechanical (M) event. (10 points)
EVENT CORRECT ORDER S / D E / M
Ventricular ejection
First heart sound
Isovolumetric relaxation
AV node depolarization
QRS wave
7.For each "vessel", give one characteristic which would distinguish it from all the other "vessels" in the table. (10 points)
" VESSEL" |
CHARACTERISTIC |
bronchiole |
|
arteriole |
|
vein |
|
capillary |
|
large artery |
|
alveoli |
|
lymphatic |
|
nephron |
|
garden hose |
|
8. Complete the following equations (including units) which describe mathmatically how our respiratory, CV, and renal systems are regulated. (5 points)
Ventilation (L/min) =
Mean Systemic blood pressure (mmHg) =
Amount excreted (L/day or g/day) =
9.For each factor below, indicate what roles each plays in controlling BP, and if you increased the factor, how this would change BP. (10 points)
FACTOR |
HOW IT RELATES TO BP |
BP
(INCREASE OR DECREASE) |
Sympathetic NS |
|
|
Parasympathetic NS |
|
|
Vasopressin (ADH) |
|
|
Angiotensin |
|
|
10.List/diagram the sequence of events that occurs when osmoreceptors increase their frequency of AP's .
(5 points)
11.List/diagram the sequence of events that occurs when juxtaglomerular cells are stimulated by low sodium. (5 points)