What may be the most likely reason for the existence of polar bodies?
A) They act as a back-up in case the secondary oocyte becomes non-viable.
B) They may be fertilized and produce a viable twin.
C) They provide a structure for half of the chromosomes after cellular division.
D) They add a hormonal stimulus necessary to trigger ovulation.
E) They are important additional sources of estrogen.
C) They provide a structure for half of the chromosomes after cellular division.
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Wharton's jelly is a form of
A) Marfan's syndrome. B) mucous connective tissue. C) ground substance. D) collagen fiber. E) embryonic epithelium.
We know all there is to know about the structure and function of the human body
Indicate whether the statement is true or false
The type of fetal monitoring that uses sound waves to visualize the developing fetus is a/an ________.
A. chorionic villi sampling B. auscultation C. amniocentesis D. fetoscopy E. ultrasound
Stepping on a piece of glass would most likely invoke a ________ reflex.
A. stretch B. Golgi tendon C. pain D. withdrawal E. motor