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KaylaKouiyoth
Physio (Assignment 2) Weeks 7-13
| Question | Answer |
|---|---|
| The difference between sodium and potassium in the generation of action potential is that: | sodium causes depolarization of the cell membrane, and potassium causes repolarization of the cell membrane. |
| 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. |
| Both sympathetic and parasympathetic divisions are tonically active, which means they | continually conduct impulses to autonomic effectors. |
| Which region of the brain plays a part in the mechanism responsible for emotions by associating sensory impulses with feelings of pleasantness and unpleasantness? | thalamus |
| How does a dually innervated autonomic effector differ from a singly innervated autonomic effector? | A dually innervated effector receives input from both sympathetic and parasympathetic pathways. A singly innervated autonomic effector receives input from only the sympathetic division. |
| In comparison with the nervous system, the regulatory effects of the endocrine system are: | slow to appear but long-lasting. |
| When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called: | permissiveness. |
| In the extrinsic pathway of stage 1 of the clotting mechanism, chemicals released from damaged tissues trigger the cascade of events that ultimately result in the formation of | prothrombin activator. |
| The term used to describe the collection of mechanisms that influence the circulation of blood is: | hemodynamics. |
| The presentation of an antigen by an antigen-presenting cell activates the T cell. The cell then divides repeatedly to form a clone of identical sensitized T cells that form | effector T cells and memory cells. |
| The lymphatic system serves various functions in the body. The two most important functions of this system are | fluid balance and immunity. |
| _____ is the only antibody class with the ability to cross the placental barrier, providing passive immunity to the developing fetus during pregnancy. | IgG. |
| Boyle’s law states that the volume of a gas varies _____ with pressure at a _____ temperature. | inversely; constant |
| Which gas law deals with the solubility of gases in solution? | Henry |
| Internal respiration can be defined as: | the exchange of gases between the blood capillaries and the tissue cells. |
| The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is: | vasoactive intestinal peptide. |
| The process of fat emulsification consists of: | breaking fats into small droplets. |
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KVKouiyoth
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