![]() ![]() Kind of protective layer that the sperm has to get through. And there's a whole bunch of them, and they form this very thick ![]() Thing that's growing out of the edge of the egg cell. Is basically a little tree or a long branching And glycoproteins are basically a protein, I'll draw a protein here in green, with a whole bunch ofīranching sugar chains that are coming off of them. Thick layer of glycoproteins that sit on the outside of the egg. And so you may have noticed this thick outer coating on the egg cell here, that's a very important structureĬalled the zona pellucida. Share of genetic material ready to combine during fertilization. And similar to the sperm cell, the egg cell has its Now compared to the spermĬell, which I'll draw in here, the egg cell is aboutġ0,000 times more massive. The egg cell is huge compared to the sperm cell. Now the first thing you'll notice is that the egg cell is round, unlike the torpedo It's designed to move fastĪnd to get to the egg. To provide propulsion, some mitochondria in the middle section to give energy to the tail, a head which contains ![]() And the acrosome is gonna be important later on for fertilization. Little collection of enzymes called the acrosome. And just like any regular torpedo, the sperm torpedo has a I'll draw it kind of all coiled back here. Torpedo is here in the head, and that's the genetic material, In order to propel the sperm torpedo towards the egg, it needs a lot of energy. In fact, these mitochondriaĪre often fused together to create big organelles. And the sperm cell hasĪ whole bunch packed right into the base of the flagellum here. And mitochondria are organelles that are responsible for You can see I'm drawing these mitochondria wrapped around the flagellar base here. Of the flagellar tail, are all of these little Now within that middle section, wrapped around the base At the back end it has the tail, and the tail is just a flagellum, and as the flagellum spins itĪcts like a little propeller. You can see, just like a torpedo, it has a pointed head which allows it to travel in the forward direction. So the sperm cell is packed with features that allow it to fulfill its job. The sole purpose of the sperm, the entire reason for its existence, is to transfer the male's genetic material into the female sex cell or the egg. Their genetic material into specialized cells called sex cells. ![]() That reproduce sexually have got to get their ![]()
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