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Tiffinee Sanders
Physiology Flashcards Weeks 7-13
| In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier. T/F | True |
| Which membrane receptor acts to directly change ion permeability when stimulated? A) Gated-channel receptor B) Metabotropic receptor C) Ionotropic receptor D) G-protein-coupled receptors | A) Gated-channel receptor |
| The somatic motor system includes all the __________ motor pathways __________ the CNS. A) involuntary; outside B) voluntary; outside C) voluntary; within D) involuntary; within | B) voluntary; outside |
| Which of the following is NOT an example of sympathetic stimulation? A) constriction of the bronchioles B) decreased secretion of the pancreas C) constriction of the urinary sphincters D) dilation of skeletal muscle blood vessels | A) constriction of the bronchioles |
| The immediate effect of a steroid hormone on a cell is the: A) formation of cAMP. B) increase of enzyme-controlled intracellular reactions. C) transcription of RNA. D) activation of adenyl cyclase. | C) transcription of RNA. |
| Dynamic equilibrium depends on the functioning of the A) cupula. B) macula. C) otoliths. D) crista ampullaris. | D) crista ampullaris. |
| The chemoreceptors in the carotid bodies are particularly sensitive to: A) hypercapnia. B) hypoxia. C) a decrease in blood pH. D) an increase in the hydrogen ion concentration of the blood. | A) hypercapnia. |
| 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 A) calcium. B) vitamin K. C) prothrombin activator. D) fibrin. | C) prothrombin activator. |
| Fluid that is clear, watery and contains protein molecules, salts, and other substances is called: A) blood plasma B) intercellular fluid C) intracellular fluid D) lymphatic fluid | B) intercellular fluid |
| Which of the following is a powerful poison that acts directly on any cell and quickly kills it? A) cytotoxin B) phagotoxin C) lymphotoxin D) granulotoxin | C) lymphotoxin |
| The term used to describe the volume of air exchanged during normal inspiration and expiration is: A) inspiratory and expiratory reserve volume. B) vital capacity. C) tidal volume. D) residual volume. | C) tidal volume. |
| The process of deglutition includes all of the following except the ___________ stage. A) oral B) pharyngeal C) esophageal D) laryngeal | D) laryngeal |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: A) gastric inhibitory peptide. B) enterogastrone. C) chyme. D) cholecystokinin. | A) gastric inhibitory peptide. |
| Hydrolysis refers to: A) breaking down a molecule of water to hydrogen and oxygen gas. B) using water to split larger compounds into smaller ones. C) using water to build larger compounds from smaller ones. D) none of the above. | B) using water to split larger compounds into smaller ones. |
| Polysaccharides are hydrolyzed into disaccharides by enzymes known as: A) lipase. B) proteases. C) maltase. D) amylase. | D) amylase. |
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TiffSand1