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
Define the Armamentarium a) Micro-mirrors (magnification: x 40, Size: 0.5) b) Micro-probe c) Micro-blades, tissue retractors d) Burs e) Retrograde Tips "round bur

Diabetes mellitm This anabolic hormone exerts its action on key glycolytic  enzymes  thus  leading  to the conversion of glucose  to  pyruvate as explained under the regulation

DE A T H - It is terminal end of the degeneration changes of old age. Death occurs when vescular system & respiratory system stop working. Failure of nervous system ma

What happens to the movement of molecules at equilibrium? At equilibrium, the movement of molecules continues, but because there is no concentration gradient, there is no net m

Q. Illustrate goal of modern dentistry? The goal of modern dentistry is to restore the patient to normal contour, comfort, function, esthetics, speech and health regardless of

In detail , how does the body maintains the blood calcium ion homeostasis ( including the description of negative feedback system, organs and hormones involved) What is osteoporosi

What is coronary disease? Coronary disease, or coronary insufficiency, is a disease in which there is total or partial obstruction of one or more of the arteries that irrigate

Q. What is plutonium reprocessing? Why is it a big environmental issue? The Plutonium is the highly radioactive chemical element produced from uranium by nuclear plants. The Pl

Counseling is a process whereby a qualified person purposefully assists another person to handle his or her problems. Counselling is not just giving advice. It is dependent  on mut

Q. Explain Therapy of Specific Lipid Disorders? a) Very high LDL levels usually result from inherited disorders of lipoprotein metabolism and carry a high risk of premature at