ANSC 3080 Lecture Notes - Lecture 17: Vitelline Membrane, Blastocoel, Hyaluronidase
27 Mar 2018
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Document Summary
Internal mucosa and lamina propria well developed in the infundibulum and ampulla. Possess ciliated epithelium (under control of e2) beat and move fluid towards the uterus. Secretory cells (peg cells) secrete nutrients for oocyte, and antimicrobial to maintain the health of the oocyte. Physical barrier: fold + mucus = plug. During estrus e2 act to changes mucus composition. Forms strands or privilege pathways pp to allow sperm to pass. After ovulation, p4 returns mucus to acidic barrier. Very few spermatozoa reach the site of fertilization. The major block is at the junction between uterus and oviduct. One ejaculation can be used for many doses. Bypass the traps and majority of backflow. Lose half of the dose because sperms will split equally between the two horns when deposited in the middle. Can use ultrasound to monitor the growth of follicles to predict which side will ovulate and have a more accurate deposition of semen.
