The brain and spinal cord are protected by the ________
A) serosa
B) meninges
C) pleura
D) peritoneum
E) pericardium
B
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An example of a biomarker is
A) cholesterol. B) sodium chloride. C) hydrogen. D) any DNA sequence.
Which statement accurately describes total blood flow?
A. Total blood flow equals cardiac output and is a fixed number given that there is a finite amount of blood in the body. B. Total blood flow equals cardiac output and can vary significantly over time with activity levels. C. Total blood flow is measured as the sum of blood flow to upper and lower extremities and is measured in liters. D. Total blood flow is measured as the sum of blood flow to upper and lower extremities and is measured in beats per minute. E. Changes in total blood flow are accompanied by equivalent changes in local blood flow in all areas of the body.
The large artery that serves the brain is the __________.
a. external carotid artery b. subclavian artery c. cephalic artery d. internal carotid artery
John Smith works outdoors in the winter at a ski resort. His thyroid hormone levels are
A. lower in the winter to conserve body heat. B. higher in the winter to increase body temperature. C. lowered in the summer after his job to decrease body temperature. D. increased in the summer after his job to increase body temperature. E. unaffected by his job.