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Corrie Garcia
Physiology Week 7 - 13
| Question | Answer |
|---|---|
| Compared with the outside of the neuron, the inside has a(n) ___ charge. | negative |
| The only ion(s) that can diffuse a neuron's membrane when the neuron is at rest is (are) | potassium |
| The active transport mechanism in the plasma membrane that transports sodium and potassium ions in opposite directions and at different rates is the | sodium-potassium pump |
| When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called | permissiveness |
| The major hormone produced by the corpus luteum is | progesterone |
| ______, a natural constituent of blood, acts as an antithrombin and prevents clots from forming in vessels. | Heparin |
| After blood leaves the lungs and returns to the heart, it enters the | left atrium |
| Mechanical devices that permit the flow of blood in one direction only are called | valves |
| Atria are often called ________ because they receive blood from vessels called veins | receiving chambers |
| The four structures that compose the conduction system of the heart are the | SA node, AV node, AV bundle, and Purkinje fibers |
| Blood pressure is measured with the aid of an apparatus known as a(n) | sphygmomanometer |
| The mechanisms of which three hormones work together to regulate blood volume? | Aldosterone, ANH, and ADH |
| Which two factors promote the return of venous blood to the heart? | blood-pumping action of respirations and skeletal muscle contractions |
| The body's defense mechanisms can be organized into one of two major categories of immune mechanisms; these are | innate and adaptive immunity |
| The lymphatic system serves various functions in the body.. The two most important functions of this system are | fluid balance and immunity |
| The function of lymph nodes are | defense and hematopoiesis |
| Adaptive immunity, part of the body's third line of defense, is orchestrated by two different classes of a type of white blood cell called the | lymphocyte |
| The major form by which carbon dioxide's transported in the circulatory system is: | as bicarbonate ions |
| Boyle's law states that the volume of a gas varies ___ with pressure at a ____ temperature. | inversely; constant |
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corrieg