Cephalocaudal folding occurs because of the rapid growth of the
A. yolk sac.
B. amnion and embryonic disc.
Answer: B
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Which of the following meninges has two layers?
a) Spinal dura mater b) Cranial dura mater c) Spinal arachnoid mater d) Cranial arachnoid mater e) All of these choices
The cells that rhythmically and spontaneously generate action potentials in the heart are called __________.
Fill in the blank(s) with the appropriate word(s).
What is the function of the highlighted organelle?
A. Produces most of the ATP in the cell via cellular respiration B. Synthesizes proteins that inhabit the cytosol C. Regulates transport and modifies newly synthesized proteins D. Synthesizes protein for secretion, Insertion into the plasma membrane, and lysosomal enzymes
When a female is pregnant, there is a lot of
A. FSH present in the blood. B. LH present in the blood. C. HCG present in the blood. D. All apply.