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A&P II
Test II
| Question | Answer |
|---|---|
| Peripheral chemoreceptors in the carotid body respond to a decrease in PCO2 by | Closing K+ channels |
| A response to your body to respiration acidosis is due to | Nothing can be done |
| NO is released by | Eosinophil |
| A response of your body to metabolic alkalosis is to | Hypoventilation |
| Cardiac output would be increased by | Decreadsing resistance |
| What happens to hear rate if I cut the SA node is humans? It will | Decrease |
| Which of the following does not affect the resistance found in arteries | Presence of valves |
| Fenestrated capillaries have/are | Pores |
| Cardiac output is defined as | HR + SV and HR + (EDV-ESV) |
| Blood moves forward through veins because of all of the following, except | pumping by the smooth muscle in the wall of the vein |
| if blood is pressure doubled, the blood flow through a vessel would be | halved |
| What occurs at the circled label 2 on graph | atria eject blood into ventricles |
| In cardiac muscle, the fast depolarization ohase of the action porential is the results of | increase membrane permeability to NA ions |
| what is the nature of acetuychiline inhitory on heart rate? | Causes opening of K channels in the SA node |
| Some of the least permeable capillaries are found in ____ while some of the most are found in ____ | Brain…. Bone marrow |
| SV depends on | EDV all above |
| Blood returning to heart from the systemic circuit first enters the | Rt atrium |
| The long plateau phase of the cardiac muscle action potential is due to | Calcium channels remaining open |
| Depoliratztion of ventricles is represented on a EKG by the | QRS wake |
| During isovolumetric phase the ventricular systole, the | All valves are closed |
| You would expect to find fenestrated capillaries in | Kidneys |
| NO induces vasodilation in your blood vessels by | Opening K+ channels |
| The major ionic change the initiates the rising phase of pacemaker cell action potential is | Calcium ion entry |
| Which are local vasodilators? | Decreasing CO2 increasing CO2 and decreasing pH |
| The body’s nonspecific defenses include all of the following, expect | Antibodies |
| The foramen ovale is the fetus | Directs blood from rt to lft atrium |
| Blood pressure increase in response to all, except which of the following | Falling blood volume |
| Each of the following paracrines/ ions may cause vasodilation expect | CA2+ influx (in) |
| Pulmonary veins carry blood ____ the heard and this blood is _____ | Toward, deoxygenated |
| A person has an unusually low concentration of proteins in his blood. Filtration at the arterial end will be | Increase |
| The term ductus venous refers to | A special fetal vessel that allows umbilical blood to bypass the lived |
Created by:
msmcginley
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