It is the back up hard drive to the basal body, which in motile spermatids is an extension of the primary cilium.
Research by Dr C.A. Poole in New Zealand examined the role of primary cilia, and in 1985 published the following paper:
Poole, C. A., M. H. Flint, et al. (1985). "Analysis of the morphology and function of primary cilia in connective tissues: a cellular cybernetic probe?" Cell Motil 5(3): 175-93.
The tail of sperm is called flagellus and it also has a centriole in the tail as well. The centriole helps and propels the sperm to swim.
The proximal region refers to the part of a structure that is near the point of origin or attachment. It is the opposite of the distal region, which is further away from the point of origin or attachment. This terminology is commonly used in anatomy to describe the relative positions of different body parts.
Middle piece is formed of mitochondiral spiral , nebenkern around the proximal part of axoneme. The mitochondria are the carriers of the oxidative enzymes and the enzymes which are responsible for oxidative phosphorylation. So the middle piece is the power house of a sperm
Proximal means closer to the origin of the limb or finger. Medial means the inside aspect, closer to the midline. So the proximal medial aspect of the proximal phalanx is the "inside" edge of the first bone of the toe, closer to the beginning of the toe than to the end.
The main function of sperm is to fertilize the egg during sexual reproduction. Sperm carries genetic material (DNA) from the male parent and when it successfully penetrates the egg, it forms a zygote which eventually develops into an embryo.
The tail of sperm is called flagellus and it also has a centriole in the tail as well. The centriole helps and propels the sperm to swim.
Centrioles interact with Microtubules, Embyros, and Sperm Cells in singles, doubles, AND triples.
The sperm nucleus (in animals) contains the haploid chromosome set of the parent father. The egg or ovum carries the other half of the chromosome set from the parent mother. On fertilisation the two sets fuse and a full set of chromosomes forms (diploid). The cell then divides through mitosis to form the embryo. The nucleus also helps control the sperm cell while it seeks out the ovum. In plants a similar structure develops when a pollen grain (male) germinates on the stigma of a receptive flower. A pollen tube grows down the style to deliver the nucleus to the ovary of the flower [simplified explanation!].
the function of the sperm duct is to carry the sperm from the testes
The proximal region refers to the part of a structure that is near the point of origin or attachment. It is the opposite of the distal region, which is further away from the point of origin or attachment. This terminology is commonly used in anatomy to describe the relative positions of different body parts.
the more metaphysis you have the taller you might be
It stores sperm
sperm main function is to carry the male genes to the egg
Middle piece is formed of mitochondiral spiral , nebenkern around the proximal part of axoneme. The mitochondria are the carriers of the oxidative enzymes and the enzymes which are responsible for oxidative phosphorylation. So the middle piece is the power house of a sperm
Proximal means closer to the origin of the limb or finger. Medial means the inside aspect, closer to the midline. So the proximal medial aspect of the proximal phalanx is the "inside" edge of the first bone of the toe, closer to the beginning of the toe than to the end.
The spermatozoon is a remarkably complex metabolic, locomotive and genetic machine. It is approximately 60 microns in length and is divided into 3 sections: head, neck and tail. The oval sperm head consists of a nucleus containing the highly compacted DNA, and an acrosome that contains the enzymes required for penetration of the egg shell for fertilization. The neck maintains the connection between the sperm head and tail and consists of the connecting piece and proximal centriole. The tail harbors the midpiece, principle piece and endpiece. The tail midpiece contains the axoneme or engine of the sperm and the mitochondrial sheath, the source of energy for movement. Physiologically, the sperm axoneme is the true motor assembly and requires 200-300 proteins to function. Among these, the microtubules are the best-understood components. Sperm microtubules are arranged in the classic "9+2" pattern of 9 outer doublets encircling an inner central doublet. Defects in the sperm axoneme are well-recognized causes of ciliary dyskinesias that are routinely associated with infertility.
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