Explain how blood flow to tissues changes during the fight-or-flight response
What will be an ideal response
During the fight-or-flight response, vasodilation occurs in those vessels serving the heart and skeletal muscles crucial to fight or flight. In contrast, vasoconstriction occurs in those vessels serving areas less vital to fighting/fleeing like skin, digestive organs, and the urinary system. The changes in blood vessel diameter are induced by activation of the sympathetic division of the ANS.
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In the centrifuged sample of blood illustrated, number 2 indicates
A. erythrocytes. B. plasma. C. leukocytes. D. platelets. E. leukocytes and platelets.
The renal fascia:
A) separates the kidney from the ureter. B) usually prevents pus from a perinephric abscess from spreading to the contralateral kidney. C) prevents the kidney from moving during respiration. D) holds the renal artery and vein together. E) is composed of peritoneum.
The sella turcica is part of the ________ bone and houses the ________ gland
A) ethmoid; thymus B) sphenoid; pituitary C) ethmoid; pituitary D) sphenoid; thymuss
Since urine contains dissolved solutes, it has ________ specific gravity than (as) water
A) a higher B) a lower C) the same