GENERAL HISTOLOGY

Detailed explanation-1: -"A human testis may have 800-1600 tubules, with an aggregated length of about 600 meters: that’s a shade over 1950 feet, which is a good deal longer than the Empire State Building is high."

Detailed explanation-2: -Each testis contains more tha n 30 meter s (over 90 feet) of tiny, tightly packed tubules called seminiferous tubules. These tubules are the functional units of the testes. They produce s perm and secrete testosterone.

Detailed explanation-3: -The average length of a seminiferous tubule was 140 mm, and the total length of all seminiferous tubules was 1.54 m. The tubules located near the cranial and caudal poles of the testis were shorter than those located near the equatorial areas of the testis.

Detailed explanation-4: -Each of the 200 to 300 lobules contains one to three long and tightly coiled seminiferous tubules, within which sperm production occurs. In contrast to female eggs, sperm are continually produced throughout a man’s lifetime.