Lecture 40 TO POST slides - Copy

Lecture 40 TO POST slides - Copy - Gametogenesis,...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon
Gametogenesis, Fertilization, and Early Development Chapter 46 6th ed.: 984-986 7th: 969-971; 973-975 Chapter 47 6 th : 999-1006; 1010-1011 7th: 988-996; 999-1000
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Gametogenesis : Formation of gametes Spermatogenesis : Sperm formation Oogenesis : Egg (ovum) formation
Background image of page 2
Spermatogenesis: occurs in seminiferous tubules: tightly packed in testes a seminiferous tubule
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Immature cells are at the outside of the tubule wall. They move inward as they mature. Mature sperm are releas- ed into the tubule lumen.
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Meiosis occurs in de- veloping sperm as the cells move inward.
Background image of page 6
Ovary: where eggs form. Contains follicles: layers of cells surround- ing each egg. developing follicles
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Ovulation: Each month, 1 egg bursts from follicle; released into oviduct.
Background image of page 8
(haploid)
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
One secondary oocyte is released at ovulation. ovulation
Background image of page 10
Meiosis II is only completed when sperm enters. Fertilization: fusion of 2 haploid gametes to give a diploid zygote.
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
the oviduct. Zygote moves to uterus for implantation. * * = fertilization
Background image of page 12
Image of page 13
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 40

Lecture 40 TO POST slides - Copy - Gametogenesis,...

This preview shows document pages 1 - 13. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online