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Showing posts from September, 2019

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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Difference between external urethral sphincter of male and female

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Difference between external urethral sphincter of   male and female external urethal sphincter in male external urethal sphincter in female The external urethrae,   in males, wraps solely around the urethra It constricts only urethr Females do have a more elaborate external sphincter muscle than males as it is made up of 3 parts: the sphincter urethrae, urethrovaginal muscle, and the compressor urethrae. The urethrovaginal muscle fibers wrap around the vagina & urethra.   So it   constricts both the vagina & the urethra.
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Difference between external urethral sphincter of male and female

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Difference between external urethral sphincter of   male and female  external urethal sphincter in male external urethal sphincter in female The external urethrae,   in males, wraps solely around the urethra It constricts only urethr Females do have a more elaborate external sphincter muscle than males as it is made up of 3 parts: the sphincter urethrae, urethrovaginal muscle, and the compressor urethrae. The urethrovaginal muscle fibers wrap around the vagina & urethra.   So it   constricts both the vagina & the urethra.
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Difference between Internal urethral sphincter of male and female

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Difference between Internal urethral sphincter of   male and female  Internal urethal sphincter in male Internal urethal sphincter in female Inhibit the release of urine. In males, the internal sphincter muscle of urethra functions to prevent reflux of seminal fluids into the male bladder during ejaculation. Inhibit the release of urine. No other function    
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Difference between internal and external sphincter urethrae

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Difference between internal and external sphincter urethrae Internal urethral sphincter External urethral sphincter It is located at the bladder's inferior end & the urethra's proximal end at the junction of the urethra with the urinary bladder & s urrounds the internal urethral orifice It is located in the deep perineal pouch.   In female it is situated below the inferior end of urinary bladder. In male, it is situated just inferior to the prostate (at the level of the membranous urethra) This is the primary muscle for prohibiting the release of urine It is a secondary sphincter to control the flow of urine through the urethra It is derived from the bladder musculature of trigonal region It is derived from the sphincter urethane muscle It is formed by smooth muscle cells It is formed by skeletal muscle ...
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Structures pierce by perineal membrane of male vs female

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Structures pierce by perineal membrane of male and female Perineal membrane of male Perineal membrane of female It is pierce by urethra It is pierce by urethra & vagina Ducts of the bulbourethral glands No ducts pierce the membrane Artery and nerve of the bulb of penis Artery and nerve of the bulb of vestibule   Dorsal artery of the penis Dorsal artery of the clitoris Deep artery of the penis Deep artery of the clitoris Posterior scrotal nerve and vessels Posterior labial   nerve and vessels Branches of the perineal nerve to superficial perineal muscles Branches of the perineal nerve to superficial perineal muscles
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