By the end of 8 weeks, the individual is considered a fetus because
A. the amniotic cavity has formed.
B. all the primary germ layers are formed.
C. all of the organ systems are present.
D. the mesoderm has formed.
E. the neural tube and yolk sac have formed.
Answer: C
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If the general interpretative area of the dominant hemisphere is damaged in a child, the
A. child will do very poorly in math. B. child will fail to learn language. C. corresponding region on the opposite side of the brain may take over the interpretative functions. D. child will have difficulty concentrating.
Where is cellular metabolism carried out within cells?
a. endoplasmic reticulum b. mitochondria c. nucleus d. ribosomes e. plasma membrane
The two divisions of the efferent division of the peripheral nervous system are the ____________________ nervous system, which supplies cardiac muscle, smooth muscle, and glands, and the ____________________ nervous system, which supplies skeletal muscle
Fill in the blank(s) with correct word
The model that describes the contraction of the muscle is called the
A. contraction cycle. B. power stroke. C. sliding filament model. D. slipping fibril mechanism. E. paddle model.