Health Sciences 3300A/B Lecture Notes - Lecture 25: Spermiogenesis, Sertoli Cell, Embryogenesis
31 Mar 2019
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Document Summary
Written labelling, explain the function of this, etc. Starts at the point of contact between the ovum and the sperm - occurs before we can measure that the pregnancy is occurring. What the embryo is called after fertilization. Can be 2 weeks less or more than 40 weeks. Pre-embryonic cells are trying to divide and grow in numbers. Embryonic cells will differentiate and form specialize layers. Fetal cell layers are in the location where they will become organs. A rapid process of creating primary spermatocytes that will become spermatozoa. Division of the cells causing copies to be made. Important for splitting chromosomal dna and creates haploid cells. Go through a process of mitosis meiosis spermiogenesis. Causes spermatids to be released from the seminiferous tube which is surrounded by sertoli cells (provide nourishment) They migrate towards the lumen, finish the process of spermiogenesis & develop tails - which start to migrate through the pathway and start maturing.
