In what developmental stage does the human embryo implant in the wall of the uterus?
A. As a zygote
B. During organogenesis
C. In the gastrula stage
D. In the blastocyst stage
E. In the morula stage
Answer: D
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The plasma concentration of estrogen reaches a higher level during the follicular phase than during the luteal phase, despite the fact that the follicle and corpus luteum both secrete estrogen
Indicate whether the statement is true or false
The half-life of a hormone allows one to determine
A. the rate of hormone secretion. B. the identity of a hormone. C. the rate at which hormones are eliminated from the body. D. the rate of action of a hormone. E. the rate of travel through the blood to a target.
In response to severe injuries or burns, the body may repair itself by producing scar tissue to fill the damaged area. This process is called ________.
Fill in the blank(s) with the appropriate word(s).
Thin skin contains:
A) two more layers of keratinocytes than thick skin. B) the same layers of keratinocytes as thick skin. C) one more layer of keratinocytes than thick skin. D) one less layer of keratinocytes than thick skin.