Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Charli Carson
SCI221-08 WEEK 14
| Which membrane receptor acts to directly change ion permeability when stimulated? | Gated-channel receptor |
| Which is true of an action potential? | The outside of the plasma membrane is negatively charged, and the inside is positively charged. |
| The somatic motor system includes all the _____ motor pathways _____ the CNS. | voluntary; outside |
| 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 |
| Parasympathetic stimulation has no effect on any of the following areas except: | sweat glands. |
| where do frequencies—from high to low pitches—cause activity in the hair cells within the cochlear duct? | between the base and the apex of the cochlea |
| Accommodation for near vision necessitates | an increase in the curvature of the lens. constriction of the pupils. convergence of the two eyes. |
| Which is not true of the hormone somatostatin? | It stimulates the secretion of insulin. |
| Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: | hematopoietic stem cells. |
| The chemoreceptors in the carotid bodies are particularly sensitive to: | hypercapnia. |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? | It flows into the inferior vena cava. |
| Fluid that is clear, watery and contains protein molecules, salts, and other substances is called | intercellular fluid |
| The T cell is considered | the communicator |
| The functions of the lymph nodes are | defense and hematopoiesis. |
| Which of the following is a powerful poison that acts directly on any cell and quickly kills it? | lymphotoxin |
| Which structural feature facilitates oxygen diffusion from the alveolar air into the blood in lung capillaries? | The alveolar and capillary walls are both very thin. The alveolar and capillary surfaces are both extremely large. The lung capillaries accommodate a large amount of blood at one time. Each red blood cell comes close to alveolar air. |
| Spirometry is used to measure all of the following EXCEPT: | Total lung capacity |
| External respiration can be defined as: | the exchange of gases between the lung and the blood capillaries in the lung and pulmonary ventilation. |
| Peristalsis is regulated in part by the intrinsic stretch reflexes. It is also thought to be stimulated by the hormone | cholecystokinin (CCK) |
| The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is: | vasoactive intestinal peptide. |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: | gastric inhibitory peptide. |
| Bicarbonates are useful in the GI tract to: | neutralize hydrochloric acid. |
Created by:
charli2002
Popular Physiology sets