6
Question
Describe the ultrastructure of human sperm with the help of labelled diagram.
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Solution
The mammalian sperm cell can be divided into 2 parts:- head: contains the nucleus with densely coiled chromatin fibers, surrounded anteriorly by a thin, flattened sac called the acrosome, which contains enzymes used for penetrating the female egg. It also contains vacuoles.[1]
- tail: also called the flagellum, is the longest part and capable of wave-like motion that propels sperm for swimming and aids in the penetration of the egg. Sperm motility depends on the 4 parts of the tail: connecting piece, midpiece, principal piece, and the end piece.
- The neck or connecting piece contains one typical centriole and one atypical centriole such as the proximal centriole-like.
- The midpiece has a central filamentous core with many mitochondria spiraled around it, used for ATP production for the journey through the female cervix, uterus and uterine tubes.
- The tail or "flagellum" executes the lashing movements that propel the spermatocyte.
The mammalian sperm cell can be divided into 2 parts:
- head: contains the nucleus with densely coiled chromatin fibers, surrounded anteriorly by a thin, flattened sac called the acrosome, which contains enzymes used for penetrating the female egg. It also contains vacuoles.[1]
- tail: also called the flagellum, is the longest part and capable of wave-like motion that propels sperm for swimming and aids in the penetration of the egg. Sperm motility depends on the 4 parts of the tail: connecting piece, midpiece, principal piece, and the end piece.
- The neck or connecting piece contains one typical centriole and one atypical centriole such as the proximal centriole-like.
- The midpiece has a central filamentous core with many mitochondria spiraled around it, used for ATP production for the journey through the female cervix, uterus and uterine tubes.
- The tail or "flagellum" executes the lashing movements that propel the spermatocyte.
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