Explain the role of the chorion in formation of the embryonic part of the placenta
What will be an ideal response?
The chorion encloses all the other membranes and the embryo. As the chorion develops, it forms outgrowths called the chorionic villi, which are initially found around the entire surface of the chorion. However, as the pregnancy progresses, chorionic villi grow only in the direction of the stratum functionalis layer of the endometrium and do not continue to surround the other membranes and the embryo. By late week four of development, the chorionic villi are blended with the stratum functionalis layer and begin to form the principal embryonic part of the placenta.
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Select all that describe a necrotic tissue.
A. Inflammation is likely present. B. The cells are undergoing mitosis. C. The cells are undergoing a clean, organized, programmed cell death. D. The cells are irreversibly damaged.
________________________________________ is abnormal softening of cartilage
Fill in the blank(s) with correct word
What ending on the generic name of some antihistamines may indicate that they are antihistamines?
a. -hist b. -ane c. -amine d. -ate
The reabsorption of bicarbonate ions in the proximal tubule helps regulate:
A) blood pressure. B) blood volume. C) blood pH. D) blood solute concentration of sodium ions.