Under the Influence of the Trophoblast, Maternal Blood Vessels in the Endometrium

question 21

Multiple Choice

Under the influence of the trophoblast, maternal blood vessels in the endometrium

• A) disappear.
• B) attach to the inner cell mass.
• C) break down and form sinuses or lacunae.
• D) form a capillary network in the trophoblast.
• E) increase in size and penetrate the blastocyst.

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Definitions:

Body Size

Physical dimensions, volume, or mass of an individual's body.

Fontanelles

Soft spots on a baby's skull where the bones have not yet fused, allowing for growth of the brain and skull.

Cephalocaudal

denotes a pattern of growth in humans where development proceeds from the head downwards through the body, guiding both physical growth and motor skill development.

Proximodistal

A pattern of development where growth starts at the center of the body and moves towards the extremities.