The formation of endodermal and ectodermal germ layers occurs at ________
A) blastula formation
B) fertilization
C) cleavage
D) gastrulation
D
Explanation:
A) The formation of endodermal and ectodermal germ layers does not occur at blastula formation.
B) The formation of endodermal and ectodermal germ layers does not occur at fertilization.
C) The formation of endodermal and ectodermal germ layers does not occur at cleavage.
Exercise 46: Post-Lab Questions
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Which type of muscle is found in the wall of the heart?
A. Smooth muscle B. Cardiac muscle C. Skeletal muscle
Differences between arterioles and metarterioles include the fact that arterioles
A) allow blood to bypass capillary beds. B) have a continuous smooth muscle layer in their walls. C) have a continuous smooth muscle layer in their walls and allow blood to bypass capillary beds. D) have an endothelial lining. E) All of the answers are correct.
What are the inward extensions of the sarcolemma into the muscle cell called? What function do these extensions serve?
What will be an ideal response?
What structure anchors the thecal sac and conus medullaris to the coccyx?
A. filum terminale B. denticulate ligaments C. pia mater D. cauda equina