Questions 173177

Gary is a 35-year-old man who was previously healthy until one day, when he noticed that his right leg was weak. As the day progressed, he found that he was dragging the leg behind him when he walked, and he finally asked a friend to drive him home from work because he was unable to lift his right foot up enough to place it on the gas peddle. He also noticed that his left leg felt a little bit numb. Finally, his wife convinced him to go to the emergency room of his local hospital. When Gary...

Questions 5253

Substances such as tritiated amino acids and phaseolus vulgaris agglu-tinin microinjected into specific regions of the brain have also been employed by many investigators for the study of the nervous system. 52. These methods are specific in that they label 53. These methods take advantage of the principle of a. Metabolic mapping of CNS pathways b. Staining of degenerating axons 54. Magnetic resonance imaging (MRI) and 2-deoxyglucose (2-DG) autora-diography are methods developed to c. Label...

Answers

The answers are 50-a, 51-c. (Martin, pp 23-27.) With HRP histochemistry, the glycoprotein enzyme HRP is injected into the region of the terminal endings of the neuronal pathway under examination and is incorporated into the axons through a process of micropinocytosis. Horseradish peroxidase is then retrogradely transported back to the cell bodies of origin of that pathway, where it is then degraded. By reacting the tissue with an appropriate substrate, the labeled cells can be visualized...

Questions

DIRECTIONS Each item below contains a question or incomplete statement followed by suggested responses. Select the one best response to each question. 135. A college student received an injury as a result of being tackled in a football game. After the game, the student was treated at a local hospital and was found to be unable to abduct and rotate the left arm at the shoulder, flex the elbow, and extend the wrist of the left side. Upon further examination, testing revealed depression of the...

Questions 187189

A 56-year-old woman experiences a loss of taste affecting the front of her tongue and the ability to smile as a result of an infection. Copyright 2002 The McGraw-Hill Companies. Click Here for Terms of Use. 187. If the sensory loss involves damage of cell bodies, the specific group of neurons so affected would be the 188. The cranial nerve most immediately affected is 189. The components of the nerve that is affected include a. General somatic afferent and general somatic efferent b. Special...

Questions 152155

Each effect below may be caused by a lesion at a particular site. Use the previous diagram to locate the site of each causative lesion. 152. Lower motor neuron LMN deficit 154. Alleviation of pain associated with the lower limb DIRECTIONS Each item below contains a question or incomplete statement followed by suggested responses. Select the one best response to each question. 156. The level of the section of the spinal cord depicted on the previous diagram is 157. The polar regions of the...