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Kimberley Navas
Physiology 7-13
| Questions | Answers |
|---|---|
| Which membrane receptor acts to directly change ion permeability when stimulated? | Gated-channel receptor |
| In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier. | True |
| The fastest nerve fibers in the body can conduct an impulse that is how much faster than the slowest fibers in the body? | Almost 300 times faster |
| The somatic motor system includes all the _____ motor pathways _____ the CNS. | voluntary; outside |
| Nerves that innervate the floor of the pelvic cavity and some of the surrounding areas are found in the _____ plexus. | coccygeal |
| All of the following cranial nerves are involved in proprioception except the: | vagus. |
| Which of the following is not a characteristic of the endocrine system? | Chemical messenger travels a short distance. |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? | It flows into the inferior vena cava. |
| The chemoreceptors in the carotid bodies are particularly sensitive to: | hypercapnia. |
| The T cell is considered | the communicator |
| Which of the following is a powerful poison that acts directly on any cell and quickly kills it? | lymphotoxin |
| Hyperpnea means a(n) | increase in breathing. |
| 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) |
| Stimulation of gastric juice secretion occurs in all of the following phases except the _____ phase. | digestive |
| When classified according to the kind of chemical reactions catalyzed, digestive enzymes are referred to as _____ enzymes. | hydrolyzing |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: | gastric inhibitory peptide. |