spermatid
Học thuậtThân thiện
Definition
Noun: 1. An immature male gamete (sex cell): A spermatid is a haploid cell formed from the division of a secondary spermatocyte during the process of spermatogenesis (sperm production). It is not yet a mature, motile sperm cell but will undergo further transformation to become one.
Examples
- Noun:
- Under the microscope, the spermatid can be seen as a round cell that has not yet developed a tail.
- The final stage of sperm development involves the maturation of the spermatid into a functional spermatozoon.
- During spermiogenesis, the spermatid undergoes significant structural changes.
Advanced Usage
- Developmental Biology Context: The term is used precisely to describe a specific, transient stage in the cellular differentiation pathway leading to sperm formation. It is the immediate precursor to the spermatozoon.
- In Research: Studies on male fertility often examine the transformation of to identify potential points of failure in sperm production.
Variants and Related Words
- Spermatogenesis (n): The entire process of sperm cell development, within which spermatid formation is a key phase.
- Spermiogenesis (n): The specific phase of spermatogenesis where a spermatid differentiates into a mature spermatozoon.
- Spermatozoon (n): The mature, motile male gamete; the final product of spermatid maturation.
- Spermatocyte (n): The cell type (primary and secondary) that undergoes meiosis to produce spermatids.
Synonyms
- Immature sperm cell: A descriptive synonym emphasizing its developmental stage.
- Precursor cell (to spermatozoon): A term highlighting its role in the developmental sequence.
Related Phrases / Compound Terms
- Round spermatid: A descriptive term for its appearance before it elongates.
- Spermatid injection: A specialized assisted reproductive technique (specifically, round spermatid injection or ROSI).
Noun
- an immature gamete produced by a spermatocyte; develops into a spermatozoon