B
bianca morelos
The sperm and the ovum
By Bianca Morelos
The sperm is a male gamete or sex cell. The ovum is the female reproductive
cell which is capable of developing, usually only after fertilization, into
a new individual. The sperm cell has three parts a head a middle piece and a
tail. A acrosomal at the head tip produces the enzymes that will help the
female ovum. The middle piece contains mitochondria that gives the sperm
energy. The mitochondria are tightly spiraled around the axial of the
flagellum. The form of the tail moves the sperm toward the oval. The
acrosomal is an organelle that develops over the other half of the sperm
head. The zone pellucida is the noncellular layer surrounding the ovum. A
polar body is a cell structure found inside of an ovum. The cell membrane is
a complex system that allows nutrients to enter the cell and waste products
to leave usually through osmosis. The cytoplasm is a cell subatance between
the cell membrane and the nucleus. Nucleus is a central part about which
other parts are grouped or gathered. Nucleolus is a rounded body within the
nucleus of a cell. The corona radiata is one or more cell layers of the
cumulus that lie next to the zona pellucida of the oocyte these cells go
threw the zona pellucida to the ovum.
The ovum has to be fertilized within 24 hours after expulsion
from the ovary or it has to be postponed when the ovum is ready to do it
again and that takes about 1 month. The sperm travel a rate about 1 to 5
millimeters per minute. When the sperm reaches the egg they will surround
the outer surface trying to enter. The strongest sperm are able to survive
the acidity. There this hyaluronidase that breaks down the ovum's
protection. The ovum will only let one penetrate in the head and the middle
of the sprem enter the ovum while the tails drops off outside. Immediately
the membrane becomes sealed against other sperm that are trying to get in.
The nucleus of the of the sprem move and combine with ovum and nucleus and
the zoygote are formed.
By Bianca Morelos
The sperm is a male gamete or sex cell. The ovum is the female reproductive
cell which is capable of developing, usually only after fertilization, into
a new individual. The sperm cell has three parts a head a middle piece and a
tail. A acrosomal at the head tip produces the enzymes that will help the
female ovum. The middle piece contains mitochondria that gives the sperm
energy. The mitochondria are tightly spiraled around the axial of the
flagellum. The form of the tail moves the sperm toward the oval. The
acrosomal is an organelle that develops over the other half of the sperm
head. The zone pellucida is the noncellular layer surrounding the ovum. A
polar body is a cell structure found inside of an ovum. The cell membrane is
a complex system that allows nutrients to enter the cell and waste products
to leave usually through osmosis. The cytoplasm is a cell subatance between
the cell membrane and the nucleus. Nucleus is a central part about which
other parts are grouped or gathered. Nucleolus is a rounded body within the
nucleus of a cell. The corona radiata is one or more cell layers of the
cumulus that lie next to the zona pellucida of the oocyte these cells go
threw the zona pellucida to the ovum.
The ovum has to be fertilized within 24 hours after expulsion
from the ovary or it has to be postponed when the ovum is ready to do it
again and that takes about 1 month. The sperm travel a rate about 1 to 5
millimeters per minute. When the sperm reaches the egg they will surround
the outer surface trying to enter. The strongest sperm are able to survive
the acidity. There this hyaluronidase that breaks down the ovum's
protection. The ovum will only let one penetrate in the head and the middle
of the sprem enter the ovum while the tails drops off outside. Immediately
the membrane becomes sealed against other sperm that are trying to get in.
The nucleus of the of the sprem move and combine with ovum and nucleus and
the zoygote are formed.