Question 14: Draw a labeled diagram of a Graafian Follicle?
Class 12 - Biology - Human Reproduction Page 56
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raafian follicle
a structure in the ovary of a female mammal, consisting of an OOCYTE surrounded by granular FOLLICLE cells which enclose also a large, fluid filled cavity, the whole structure being encased in a wall of connective tissue. See Fig. 179 . The Graafian follicle begins to form deep inside the ovary, stimulated by FSH as the OESTROUS CYCLE develops, gradually enlarging and maturing as it moves to the surface, eventually appearing like a blister on the surface, just prior to release of the oocyte (ovulation) by rupture of the wall. After ovulation the follicle becomes a CORPUS LUTEUM. Further ovulation is normally prevented by the corpus luteum secreting PROGESTERONE, which in turn inhibits FSH production by the PITUITARY GLAND, so no further follicles develop. The presence of the cavity distinguishes the Graafian follicle (named after Regnier de Graaf) from the OVARIAN FOLLICLES of other vertebrates.
a structure in the ovary of a female mammal, consisting of an OOCYTE surrounded by granular FOLLICLE cells which enclose also a large, fluid filled cavity, the whole structure being encased in a wall of connective tissue. See Fig. 179 . The Graafian follicle begins to form deep inside the ovary, stimulated by FSH as the OESTROUS CYCLE develops, gradually enlarging and maturing as it moves to the surface, eventually appearing like a blister on the surface, just prior to release of the oocyte (ovulation) by rupture of the wall. After ovulation the follicle becomes a CORPUS LUTEUM. Further ovulation is normally prevented by the corpus luteum secreting PROGESTERONE, which in turn inhibits FSH production by the PITUITARY GLAND, so no further follicles develop. The presence of the cavity distinguishes the Graafian follicle (named after Regnier de Graaf) from the OVARIAN FOLLICLES of other vertebrates.
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Nikki57:
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