Human chorionic gonadotropin is secreted from cells of the
A. morula.
B. embryoblast.
C. syncytiotrophoblast.
D. zygote.
C
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Answer the following statements true (T) or false (F)
1. Amacrine cells modulate communication between two layers of cells in the retina. 2. Bipolar cells give off axons to the optic nerve. 3. The rods and cones of the retina synapse with approximately six million ganglion cells. 4. Retinal cells that provide color vision are the horizontal cells. 5. Retinal cells that enable people to see in low light conditions are the rods.
The __________ arterioles supply blood to the nephons.
Fill in the blank(s) with the appropriate word(s).
The most striking feature of heat stroke is a lack of compensatory heat-loss measures, such as __________
Fill in the blank(s) with correct word
During the depolarization phase of an action potential, which of the following situations exists?
A) The membrane is becoming less permeable to all ions. B) The inside of the membrane is becoming more negative with respect to the outside. C) The membrane potential remains constant. D) The inside of the membrane is becoming more positive with respect to the outside.