Physio Final Exam
Human Body
Human Body
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Cartes-fiches
19) The expiratory neurons control the ________ muscles, whereas the inspiratory neurons control the 19) ________ muscles.
21) The Hering-Breuer reflex
58) Carbon dioxide is more soluble in water than oxygen. To get the same amount of oxygen to dissolve in plasma as carbon dioxide, you would have to
57) Jill lives in St. Louis, which is close to sea level. She decides to spend a month of her summer vacation working in the mountains outside of Denver. After a week in the mountains, what kinds of changes would you expect to see as Jill adapts to the higher altitude?
60) A student in your lab volunteers to enter a hypoxic breathing chamber for 10 minutes, and his alveolar PO2 drops to 50 mm Hg. What other change would occur?
61) A molecule that blocks the activity of carbonic anhydrase would
62) The chloride shift occurs when
63) Blocking afferent action potentials from the chemoreceptors in the carotid and aortic bodies would interfere with the brain's ability to regulate breathing in response to all EXCEPT which of the
following?
5) Which organ is NOT known to include a special portal system for blood?
6) Which artery/arteries branch(es) is/are most proximal to the beginning of the aorta at the heart?
9) Which of the following statements about hydrostatic pressure is NOT true?
10) Each of the following changes will result in increased blood flow to a tissue EXCEPT one. Identify the exception.
21) The action potential in a cardiac contractile cell causes
22) Stretching a myocardial cell
23) The rapid depolarization phase of the action potentials of myocardial contractile cells is due to which ion(s)?
24) During the plateau phase of the action potentials of myocardial contractile cells, which ion(s) is/are crossing the membrane?
28) A typical action potential of a myocardial contractile cell lasts ________ millisecond(s).
of autorhythmic cells is = at least 150+msec
of skeletal muscle cells = 1-2msec
31) If channels are permeable to
34) The fibrous skeleton of the heart is important because it
37) In the condition known as complete heart block, what happens?
38) When the heart is in fibrillation
39) Electrical shock to the heart is usually used to treat
44) Ventricular contraction
45) Atrial contraction
52) During ventricular systole,
58) Epinephrine and norepinephrine increase ion flow through ________ channels.
59) According to Starling's law of the heart, the cardiac output is directly related to the
60) Which of these will increase the heart rate?
61) Stimulation of the beta receptors on heart muscle results in
62) Drugs known as beta blockers will
7. Which of the following statements is false:
8. According to Frank-Starling law, increase in left ventricular filling during diastole will:
13. Which agents are involved in maintaining homeostasis if blood volume is significantly decreased?
18. Name 5 factors which cause the movement of blood in veins:
20. Assuming that systolic blood pressure equals 130 mmHg,diastolic blood pressure equals 70mmHg, mean arterial pressure is:
21. Factors favoring capillary filtration are:
22. Assuming that stroke volume and heart rate remains constant, increased total peripheral resistance (TPR) will result in:
What are two effects of angiotensin II?
The beta-receptors stimulation in heart causes:
The difference between systolic and diastolic blood pressures is called the
