Define cerebrovascular accident or CVA. (b) Describe its possible causes and consequences. 2. A 10 month old infant has an enlarging head circumference and delayed overall development.

She has a bulging anterior fontanelle and her CSF pressure is elevated. Based on these findings answer the following questions: (a) What are the possible cause(s) of an enlarged head? (b) Which test might be helpful in obtaining information about this infants problem? (c) Assuming the tests conducted showed the cerebral aqueduct to be constricted, which ventricles or CSF containing areas would you expect to be enlarged? Which would likely not be visible? Respond to the same questions based on a finding of obstructed arachnoid granulations. 3. In 1962 a boy playing in a train yard fell under a train. The train wheel cleanly cut off his right arm. Surgeons reattached the arm, sowing nerves and vessels back together. the boy was told he should eventually regain the use of his arm but that it would never be strong enough to pitch a baseball. Explain why full recovery of strength was unlikely. 4. Mr. Jake was admitted to the hospital with excruciating pain in his left shoulder and arm. He was found to have suffered a heart attack. Explain the phenomenon of referred pain as exhibited by Mr. Jake. 5. Indicate the results of sympathetic activation of the following structures: sweat glands, eye pupils, adrenal medullae, heart, bronchioles of the lungs, liver, blood vessels of vigorously working skeletal muscles, blood vessels of digestive viscera, salivary glands.
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