During implantation, the trophoblast divides into a superficial layer called the ________, which is composed of a multinucleate mass of cytoplasm.
A. embryoblast
B. chorion
C. cytotrophoblast
D. syncytiotrophoblast
E. amnion
Answer: D
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The groove separating the greater and lesser tubercles of the humerus is the ____________________ groove.
Fill in the blank(s) with the appropriate word(s).
The region that contains adipose tissue is indicated by letter __________.
The hair follicle is indicated by letter __________.
The structure that is responsible for whorled ridges on the epidermal surfaces is indicated by letter __________.
The structure that pulls the hair follicle into an upright position is indicated by letter __________.
The gland that produces a mixture of oily substances and fragmented cells is indicated by label __________.
The gland that produces sweat is indicated by label __________.
The time in which ovulation and menstruation cease is called
A) oogenesis. B) menarche. C) andropause. D) menopause. E) climacteric.
The appearance of the external genitalia determines an individual's
A. genotypic sex. B. phenotypic sex. C. gender identity. D. genetic sex.