Anatomy L.7 Flashcards
(12 cards)
What undergoes exocytosis early in fertilization to prevent polyspermy?
Cortical granules
fyi.
Contain proteases.
At puberty when FSH stimulates primordial follicles to primary follicles, there will be oocyte growth and differentiation and when that happens there will be formation of cortical granules
Zona pellucida contains ZP3 and ZP4 glycoproteins, what is the significance of these?
Essential for sperm binding and acrosomal activation during fertilization
What cells differentiate into follicular theca cells during growth of the primary follicles?
Stromal cells
What cells secrete follicular fluid?
Granulosa cells. Creating small fluid-filled spaces between granulosa layers
What accompanies the oocyte when it leaves the ovary during ovulation?
Corona radiata
Fyi.
Formed by the granulosa cells immediately surrounding the zona pellucida
What type of mucosa covers the uterine tube?
Simple columnar spithelium
What provides structural support to the endometrium?
Lamina propria, which contains collagen, abundant fibroblast, and ground substance
What provides oxygen and nutrients to the functional layer and to the implanted embryo?
Spiral arteries
Fyi.
These arteries grow rapidly in a spiral fashion as the functional
layer thickens under the influence of luteal steroids during the
secretory phase
What causes the endometrium to reach its maximum thickness during luteal phase?
1) accumulation of glandular secretion
2) edema
What type is the endocervical mucosa?
Simple columnar epithelium
What type is the exocervical mucosa?
Non-keratinized Stratified squamous epithelium, cont. with vaginal epithelium
What allows expansion and stretching of the vagina during sexual arousal and childbirth?
Abundant elastic fibers in the submucosal layer of the vagina
