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Melissa Reyes
Physiology week7-13
| Question | Answer |
|---|---|
| The first event to occur when an adequate stimulus is applied to a neuron is | some of the sodium channels at the point of stimulation open |
| Excitatory neurotransmitters are most likely to | initiate an action potential |
| Cerebrospinal fluid is formed by filtration of blood in the | choroid plexuses |
| Nerves that innervate the floor of the pelvic cavity and some of the surrounding areas are found in the _____ plexus | coccygeal |
| When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called | permissiveness |
| The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is | malleus, incus, and stapes |
| 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 |
| Which antibody is synthesized by immature B cells and then inserted into their plasma membranes | immunoglobulin M |
| During their residence in the thymus, pre-T cells develop into _____, cells that proliferate as rapidly as any in the body | thymocytes |
| External respiration can be defined as | the exchange of gases between the lung and the blood capillaries in the lung and pulmonary ventilation |
| During inspiration, the expansion of the lungs cause | a decrease in alveolar pressure |
| The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen | passively out of |
| The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is | vasoactive intestinal peptide |