Synaptogenesis refers to an increase in the:
number of neurons in the brain.
length of axons in the brain.
number of brain cells.
number of connections between neurons in the brain.
Question 2What happens to the brain during the fetal period of development?
It goes through a process of degeneration.
It becomes fully formed and functional.
It increases in size by about six times.
The number of neurons increase sixfold.
Question 3At the end of the third month of gestation the fetus will weigh approximately ______ and will be about ______ long.
87 grams; 10.5 centimeters
3 grams; 3 centimeters
87 ounces; 10.5 inches
3 ounces; 3 inches
Question 4External sex organs are fully formed by the:
fourth week after conception.
sixth week after conception.
twelfth week after conception.
fifth month after conception.
Question 5Which of the following summarizes the developments that take place during the fourth through sixth months of gestation?
Digestive and excretory systems develop; fingernails, toenails, and buds for
teeth form; hair grows.
The circulatory and respiratory systems develop fully; the digestive and
excretory systems develop; hair grows.
Digestive and excretory systems develop; fingernails, toenails, and buds for
teeth form; genitals are not yet developed.
Digestive and excretory systems develop; the head, torso, and lower body are
of equal proportions.
Question 6Prenatally, development happens in a near to far pattern known as:
proximodistal.
cephalocaudal.
neurogenesis.
synaptogenesis.
Question 7Prenatally, development happens in a head to tail pattern known as:
proximodistal.
cephalocaudal.
neurogenesis.
synaptogenesis.
Question 8About eight weeks after conception, the embryo weighs ______ and is ______ long.
1/8 gram; 1/8 inch
1 gram; 1 inch
2 grams; 2 inches
5 grams; 5 inches
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