Comparison between tract and nerve

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  Comparison between tract and nerve Nerve Nerve contain bundle of axons (nerve fibers) in the peripheral nervous system (PNS) that transmits signals between the central nervous system (CNS) and other parts of the body. It is the most important part of peripheral nervous system Location: Peripheral nervous system. Structure: Made of axons, connective tissue layers (endoneurium: axon is surrounded by it , perineurium: bundle of axons are surrounded by it, epineurium: whole nerve trunk is surrounded by it), and blood vessels. It gets myelination by Schwann cell   Function: Carries sensory signals to the CNS (afferent) from peripheral part of body or motor signals carry from from the CNS (efferent) to target organs like skeletal muscle, cardiac muscle, smooth muscle or glands Example: Sciatic nerve, median nerve, except optic nerve (though optic nerve is technically part of CNS in develop...
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Comparison between Meiosis in Males and Females

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Comparison between Meiosis in Males and Females

 

Topics

Meiosis in Males

Meiosis in Females

Definition

It is a continuous process which starts from puberty and remains throughout life. The process results into production of millions of spermatozoa daily.

This process may take over 40 years from start to finish. Only a few oocytes reaches upto the final stages, as most of them are lost before birth.

Occurs at

Seminiferous tubules of the testicles

Oogonia (ovary)

Number of haploid cells

Equal number of haploid cells(4 gametes)

A single enlarged haploid cell

Time

Completed in days or weeks

Delayed for months or years

Cell Division

Symmetric

Asymmetric

Start time

Begins around puberty

Begins before birth

Efficiency of Chromosome synapsis

An efficient process

A less efficient process

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