Blood pressure in arteries is higher than the blood pressure in capillaries. Blood flows from arteries to capillaries due to the presence of a:
A) homeostatic imbalance. B) positive feedback loop.
C) negative feedback loop. D) pressure gradient.
Answer: D
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Which sympathetic pathway involves only a preganglionic axon going to the effector organ?
A. Splanchnic nerve pathway B. Adrenal medulla pathway C. Postganglionic sympathetic nerve pathway D. Spinal nerve pathway E. None of the choices is correct.
Answer the following statements true (T) or false (F)
1. Cilia are hairlike structures on the free or exposed sides of some cells. 2. Endoplasmic reticulum are the “digestive bags” of the cells. 3. The mitochondria is considered the “power plant” of the cell. 4. Centrioles assist in cell division. 5. The Golgi apparatus is called the “protein factory.”
The type of joint between the carpal (trapezium) and the first metacarpal is a ________ joint
A) saddle B) hinge C) condylar D) plane
When the effects of one hormone reinforce the activity of another hormone on the same target cell, the interaction is said to be
A. agonistic. B. antagonistic. C. synergistic. D. permissive.