What is corpus luteum histology?
What is corpus luteum histology?
The corpus luteum is the endocrine remains of the collapsed follicle. The center contains the remains of the blood clot that formed after ovulation. Surrounding the clot are glanulosa lutein cells and on the outside theca lutein cells.
What are four main differences between a primordial and primary follicle?
The main difference between primordial follicle and primary follicle is that primordial follicle is a smaller, dormant follicle with a single layer of flattened granulosa cells whereas primary follicle is much larger, mitotic follicle with cuboidal granulosa cells.
Does the secondary follicle have antrum?
Secondary Follicle The secondary follicles look very similar to primary follicles, except that they are larger, there are more follicular cells, and there are small accumulations of fluid in the intracellular spaces called follicular fluid (nutritive fluid for the oocyte). These gradually coalesce to form an antrum.
Which is the first follicle that contains a fluid-filled antrum?
Mature human follicles are almost an inch (about 2.5 cm) in diameter. They are characterized by a fluid-filled cavity called the antrum (ant) which first appears in the secondary follicle stage.
How is antrum formed?
The formation of an antrum also requires movement of granulosa cells relative to each other to allow the fluid to accumulate. This presumably involves remodeling of cell-cell junctions and in species with small follicles may involve death of centrally located granulosa cells.
What is the function of the antrum in the ovary?
The follicular antrum is the portion of an ovarian follicle filled with follicular fluid. Appearance of the follicular antrum during follicular maturation is the first sign that a follicle has reached the next stage of maturation. It has changed from a primary follicle to a secondary follicle.
Does corpus luteum have antrum?
These large luteal cells are the endocrine cells of the corpus luteum, producing large amounts of the hormone progesterone. The corpus luteum may contain a small cavity at its centre, a remnant of the follicular antrum, but many do not.
What type of follicle has an antrum?
Which structure in ovary is characterized by antrum?
The primary follicles get surrounded by more layers of granulosa cells and from secondary follicles which soon get transformed into tertiary follicles that have characteristic fluid-filled cavity called antrum. This tertiary follicle further changes into the Graafian follicle .
What follicle has an antrum?
What is the role of antrum?
The antrum is the cavity around the ova which develops later in the development of the graafian follicle. It is the combination of blood plasma and secretory product of granulosa and theca cell. Following are its functions: (1) It provides microenvironment specific for the the development of the oocyte.
