### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Human reproduction </primary> <hr> <main> <div style='float: left; width:50%;'> </div> <!--<div style='float: right; width:0%;'>--> <!----> </div> </main> <hr> <footer style = "font-size: 18px"> $\rightarrow$ $\rightarrow$ <span style = "color:blue"> Human reproduction </span> $\rightarrow$ Gametogenesis $\rightarrow$ Spermatogensis </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Gametogenesis </primary> <hr> <main> <div style='float: left; width:50%;font-size:30px; text-align:left;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/c8fcdb72-f36c-4f14-cf16-177f8eb5b900/public" width="35%"> </div> <!--<div style='float: right; width:100%;'>--> <!----> <!----> <!--</div>--> </main> <hr> <footer style = "font-size: 18px"> $\rightarrow$ Human reproduction $\rightarrow$ <span style = "color:blue"> Gametogenesis </span> $\rightarrow$ Spermatogensis $\rightarrow$ Oogenesis (Ova) </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Spermatogensis </primary> <hr> <main> <div style='float: left; width:100%;font-size:30px;'> - **Spermiation** - It is the process by which mature spermatids are released from the supporting somatic Sertoli cells into the lumen of the seminiferous tubule. It is a critical determinant of the number of sperm entering the epididymis, and thus the sperm content of the ejaculate. </div> <!--<div style='float: right; width:100%;'>--> <!----> <!--</div>--> </main> <hr> <footer style = "font-size: 18px">Human reproduction $\rightarrow$ Gametogenesis $\rightarrow$ <span style = "color:blue"> Spermatogensis </span> $\rightarrow$ Oogenesis (Ova) $\rightarrow$ Oogenesis (Ova) </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Oogenesis (Ova) </primary> <hr> <main> <div style='float: left; width:99%; font-size:30px; text-align:left;'> * Oogonial cell (Mother cells) 46 * Primary Oocyte (60000 to 80000) (Prophase 1 of meiotic) * Secondary Oocyte - Ova - 23 </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Gametogenesis $\rightarrow$ Spermatogensis $\rightarrow$ <span style = "color:blue"> Oogenesis (Ova) </span> $\rightarrow$ Oogenesis (Ova) $\rightarrow$ Oogenesis(Ova) </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Oogenesis (Ova) </primary> <hr> <main> <div style='float: left; width:50%;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/00237c78-37a4-4cf0-74c0-bb36e438c600/public" width="50%"> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Spermatogensis $\rightarrow$ Oogenesis (Ova) $\rightarrow$ <span style = "color:blue"> Oogenesis (Ova) </span> $\rightarrow$ Oogenesis(Ova) $\rightarrow$ Oogenesis(Ova) </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Oogenesis(Ova) </primary> <hr> <main> <div style='float: left; width:99%;font-size:30px;'> - **Polar body** is a small haploid cell that is formed concomitantly during the process of oogenesis. They do not have the ability to fertilize. - **Why do polar bodies form?** - Polar bodies are formed because the egg cell (oocyte) does not divide evenly. The resulting cells have the same DNA, but one is much smaller than other - The smaller one is called polar body - The cell with more cytoplasm becomes a mature ovum while the polar body usually disintegrates in female reproductive system </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Oogenesis (Ova) $\rightarrow$ Oogenesis (Ova) $\rightarrow$ <span style = "color:blue"> Oogenesis(Ova) </span> $\rightarrow$ Oogenesis(Ova) $\rightarrow$ Oogenesis (Ova) </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Oogenesis(Ova) </primary> <hr> <main> <div style='float: left; width:99%; font-size:30px; text-align:left;'> - **Function of the polar bodies** - Polar bodies serve as a dumping ground for extra sets of chromosomes and ensure that the ovum will have most of the cytoplasm </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Oogenesis (Ova) $\rightarrow$ Oogenesis(Ova) $\rightarrow$ <span style = "color:blue"> Oogenesis(Ova) </span> $\rightarrow$ Oogenesis (Ova) $\rightarrow$ Control of gametogenesis </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Oogenesis (Ova) </primary> <hr> <main> <div style='float: left; width:99%;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/6eb8f616-2edc-4f98-b314-b977f7e17400/public" width="70%"> <!----> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Oogenesis(Ova) $\rightarrow$ Oogenesis(Ova) $\rightarrow$ <span style = "color:blue"> Oogenesis (Ova) </span> $\rightarrow$ Control of gametogenesis $\rightarrow$ Control of gametogenesis </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Control of gametogenesis </primary> <hr> <main> <div style='float: left; width:100%;font-size:30px;text-align:left'> - CNS (Central Nervous System) - Brain - Spinal - Hypothalamus - Gonadotropy Releasing hormone (GnRH) - Luteinizing harmone (LH) - Follicular stimulating hormone (FSH) </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Oogenesis(Ova) $\rightarrow$ Oogenesis (Ova) $\rightarrow$ <span style = "color:blue"> Control of gametogenesis </span> $\rightarrow$ Control of gametogenesis $\rightarrow$ Control of gametogenesis </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Control of gametogenesis </primary> <hr> <main> <div style='float: left; width:100%;font-size:30px; text-align:left;'> - **LH** - Leyding cells - Androgens - **FSH** - $\downarrow$ - Sertoli celss </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Oogenesis (Ova) $\rightarrow$ Control of gametogenesis $\rightarrow$ <span style = "color:blue"> Control of gametogenesis </span> $\rightarrow$ Control of gametogenesis $\rightarrow$ Control of gametogenesis </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Control of gametogenesis </primary> <hr> <main> <!--<div style='float: left; width:50%;font-size:30px;'>--> <!--</div>--> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/dd47132a-5a48-407f-73f7-1640be00dc00/public" width="70%"> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Control of gametogenesis $\rightarrow$ Control of gametogenesis $\rightarrow$ <span style = "color:blue"> Control of gametogenesis </span> $\rightarrow$ Control of gametogenesis $\rightarrow$ Sperm </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Control of gametogenesis </primary> <hr> <main> <div style='float: left; width:50%;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/e1354952-6d16-4783-e40a-4e93c2981400/public" width="70%"> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Control of gametogenesis $\rightarrow$ Control of gametogenesis $\rightarrow$ <span style = "color:blue"> Control of gametogenesis </span> $\rightarrow$ Sperm $\rightarrow$ Ova </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Sperm </primary> <hr> <main> <!--<div style='float: left; width:50%;font-size:30px;'>--> <!--</div>--> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/dc7a2a44-b19d-4a90-ef81-1f6917f75800/public" width="70%"> <!----> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Control of gametogenesis $\rightarrow$ Control of gametogenesis $\rightarrow$ <span style = "color:blue"> Sperm </span> $\rightarrow$ Ova $\rightarrow$ Thank you </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Ova </primary> <hr> <main> <!--<div style='float: left; width:50%;font-size:30px; text-align:left;'>--> <!--</div>--> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/7ae042b5-b2df-4f9c-de39-2678faa40100/public" width="70%"> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Control of gametogenesis $\rightarrow$ Sperm $\rightarrow$ <span style = "color:blue"> Ova </span> $\rightarrow$ Thank you $\rightarrow$ </footer>

### <Success style="font-size:25px"> Reproduction Human Reproduction L-3 </Success> ### <primary style="font-size:24px"> Thank you </primary> <hr> <main> <div style='float: left; width:50%;font-size:30px;'> </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Sperm $\rightarrow$ Ova $\rightarrow$ <span style = "color:blue"> Thank you </span> $\rightarrow$ $\rightarrow$ </footer>