Physio Final Exam
Human Body
Human Body
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Cartes-fiches
1. Which of the structures below is characteristic only for cardiac muscle:
4. Absolute refractory period of contractile cells is a period when:
The rhythmicity of the normal cardiac cycle is dependent upon an irritable focus of cardiac tissue called the:
2. The resistance in bronchi increases:
3. During inspiration the intrapleural pressure is:
5. Increased activity of vagal nerve on heart has:
5) Smooth muscle is present in the walls of
6) The highly branched contractile cells that regulate capillary permeability are called
8) The only blood vessels whose walls permit exchange between the blood and the surrounding interstitial fluids are the
10) Angiostatin and endostatin may be useful in the treatment of
12) Which of the following is occurring during systole?
13) The mean arterial pressure (MAP) is important because
14) Blood flow to a tissue will increase if the
15) Blood pressure is determined by
16) The difference between the systolic and diastolic pressures is called the
19) If cardiac output increases and resistance in arterioles does NOT change, what happens to arterial blood pressure?
20) Increased blood volume ________ blood pressure.
22) The matching of blood flow to the changing metabolic needs of a tissue is due to
23) Myogenic autoregulation means that
25) Reactive hyperemia is
26) Reactive hyperemia is triggered by
27) The elevated blood pressure that sometimes accompanies pregnancy is known as
28) In order to cause vasodilation of most vascular smooth muscle,
29) Several blood-borne chemicals affect the lumen size of arterioles. Which are NOT paired correctly?
page 520 table
30) ________ capillaries are very porous and allow high volumes of fluids to pass through them, whereas ________ capillaries consist of more tightly joined cells that allow a high degree of
selective materials to pass.
31) Sinusoids are modified vessels that replace ________ in some tissues.
32) Compared to arteries, the velocity of flow of the blood through the capillaries is
33) Due to the differences in opposing forces, there is net ________ occurring at the arteriolar end of most capillaries, coupled with net ________ at the venous end.
34) Restoring lost fluid from the capillaries back to the circulatory system is one of the major functions 34) of the ________ system.
35) Osmotic pressure resulting from presence of plasma proteins in blood is called ________ pressure.
38) Stretch-sensitive mechanoreceptors known as ________ are located in some artery walls.
39) Blood pressure and flow to the brain are monitored by receptors located in the wall of the
40) When blood pressure is normal, the receptors in arterial walls fire action potentials
41) When blood pressure receptors sense a loss of blood pressure, they ________ their firing rate.
42) Blood pressure and cardiac output can be altered according to
43) When the baroreceptor reflex is triggered by a decline in blood pressure,
87) ________ refers to the mass movement of fluid between the blood and the interstitial fluid as the result of ________ or ________ pressure gradients. If the direction of bulk flow is into
the capillary, the fluid movement is called ________. If the direction of flow is out of the capillary, the fluid movement is known as ________.
Bulk flow
hydrostatic & osmotic
absorption
filtration
88) During the fight-or-flight reaction, ________ is released from the adrenal medulla and binds to ________ receptors, found on the vascular smooth muscle of heart, liver, and
skeletal muscle arterioles and results in ________ (increased/decreased) blood flow to these organs; the same hormone binds to ________ receptors on other tissues, causing ________ (increased/decreased) blood flow to these organs.
epinephrine
ß2 receptors (vasodilation)
increased
alpha receptors (vasoconstriction)
decrease
67) Receptors that monitor blood pressure are called ________.
baroreceptors
