What is the middle layer of a blood vessel called?
A. Tunica interna
B. Tunica externa
C. Tunica adventitia
D. Tunica media
E. Tunica intima
D. Tunica media
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There are ___ phalanges on each hand.
Fill in the blank(s) with the appropriate word(s).
When renin is released from the kidney,
A) angiotensin II is converted to angiotensin I. B) angiotensin I formation is triggered. C) angiotensin I increases salt reabsorption at the kidneys. D) blood pressure goes down. E) blood flow to the kidneys decreases.
Which of the following best describes the Vasalva maneuver?
A. It is used to dislodge foreign matter from the airway. B. It prevents food and drink from entering the nasal cavity. C. It prevents food and drink from entering the trachea. D. It protects the lungs from overinflation. E. It increases pressure in the abdominal cavity and helps to expel abdominal contents.
What intestinal functions do the short reflexes control?
A) nutrient absorption B) absorbed nutrients would be unable to pass into the hepatic portal system C) closes sphincters D) local peristalsis and segmentation movements E) None of the answers are correct