اناٹومی مطالعاتی نوٹ · Perineum

Male urethra

About 20 cm long, from the bladder neck to the external meatus on the glans. It has prostatic, intermediate (membranous) and penile (spongy) parts.

اہم نکات

~20 cm: prostatic (3 cm), intermediate (1.25 cm), penile (~15.75 cm).
Widest: prostatic. Least dilatable: intermediate. Narrowest: external meatus.
Sphincter urethrae around the intermediate part.
Bulbar rupture → urine in the scrotum, penis and lower abdominal wall, not the thigh.
Penile urethra: phallic UGS; glans part: ectoderm.
Prostatic: transitional. Spongy: pseudostratified/stratified columnar.
Glands of Littré.

خصوصیات · Histology · Development · طبی اہمیت

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