Tail - structure of the sperm, Biology

Tail - Structure of the Sperm

The tail or flagellum is the longest part of the sperm. By its movement it causes the sperm to swim with the head forward. It consists of a thin layer of cytoplasm surrounded by plasmalemma. The axial filament is the main part of the tail or flagellum. Its structure is essentially similar to a typical flagellum or cilium with the arrangement of 9 peripheral pairs and one central pair of longitudinal fibers. The major portion of the flagellum is called 'axoneme'. An axoneme is formed by the microtubules emerging out of the centriole at the base of sperm nucleus. The core of the axoneme consists of two central microtubules surrounded by a row of nine doublet microtubules. In fact, only one microtubule is complete having thirteen protofilaments; the other is C-shaped having only eleven protofilaments.  The protofilaments are exclusively made of the dimeric protein-tubulin. Another protein dynein is attached to microtubule. The dynein is capable of hydrolysing ATP molecule and can convert chemical energy into mechanical energy that propels the sperm.

Posted Date: 1/24/2013 6:24:22 AM | Location : United States

Related Discussions:- Tail - structure of the sperm, Assignment Help, Ask Question on Tail - structure of the sperm, Get Answer, Expert's Help, Tail - structure of the sperm Discussions

Write discussion on Tail - structure of the sperm
Your posts are moderated
Related Questions
"Diversity is good" is one of the axioms of conservation biology. However in absentia of historical information, why is noting higher diversity in a system NOT the best way to eval

list all of the parts of a generalized cell that might be involved support movement coordination respiration digestion transportation excr production making proteins and reproducti

Q. What are the major theoretical models that try to explain the formation of the enzyme-substrate complex? There are two major models that explain the formation of the enzyme-

how pollination occurs in Salvia?

Q. What are the roles of ATP and NADPH in the chemical stage of photosynthesis? NADPH acts as reductant of carbon dioxide it delivers highly energetic hydrogen to precursor mol

Term Translation or protein synthesis, is quite similar in eukaryotes and prokaryotes. We will look at the details of the process in prokaryotes and consider the differences in euk

The Jones family was caught in a fire but escaped. Unfortunately the father and daughter suffered burns. The father had second degree burns on his chest, abdomen, and both arms, an

IRON It is present in bread, potatoes, green vegetables, especially spinach, lettuce, cocoa, raisins, red meat, liver, kidney, egg yolk etc. Iron is also available in the bo

Explain about the Vacuum Evaporators? It is common to construct various vacuumised vessels in series that is why the product moves from one vacuum chamber to the next and thus

Explain Ledge bypass - Non-surgical Endodontic Retreatment   Ledge bypass - StSt not NiT cause it has shape memory Ledges from outside the curvatures. The file t