The respiratory centers are located in the ________.
A. midbrain and medulla oblogata
B. hypothalamus and medulla oblongata
C. hypothalamus and pons
D. pons and medulla oblongata
Answer: D
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A) blood pressure. B) hematocrit. C) brain function. D) clotting time.
The contractile units of skeletal muscles are ________
A) microtubules B) myofibrils C) mitochondria D) T tubules
Starling forces are measured across a capillary wall, and the following values are obtained:
Capillary hydrostatic pressure 30 mm Hg Capillary oncotic pressure 25 mm Hg Interstitial hydrostatic pressure 0 mm Hg Interstitial oncotic pressure 15 mm Hg If the reflection coefficient for protein across this capillary wall is 0.5, what is the pressure and direction of fluid flow across the capillary wall? Net pressure Direction of fluid flow A. 5 mm Hg Into capillary B. 10 mm Hg Out of capillary C. 15 mm Hg Out of capillary D. 20 mm Hg Out of capillary E. 25 mm Hg Out of capillary
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A. receives oxygen-rich blood from the lungs. B. pumps oxygen-rich blood toward the body tissues. C. pumps oxygen-poor blood to the lungs. D. receives oxygen-poor blood from the body tissues.