Cremaster muscle
The cremaster muscle is a paired structure made of thin layers of striated and smooth muscle that covers the testicles and the spermatic cords in human males. It consists of the lateral and medial parts. Cremaster is an involuntary muscle, responsible for the cremasteric reflex; a protective and physiologic superficial reflex of the testicles. The reflex raises and lowers the testicles in order to keep them protected. Along with the dartos muscle of the scrotum, it regulates testicular temperature, thus aiding the process of spermatogenesis.
| Cremaster muscle | |
|---|---|
The cremaster muscle appears as a thin layer just superficial to the tunica vaginalis | |
| Details | |
| Origin | Internal oblique |
| Insertion | Tunica vaginalis |
| Artery | Cremasteric artery |
| Nerve | Genital branch of genitofemoral nerve |
| Actions | raise and lower the scrotum |
| Identifiers | |
| Latin | musculus cremaster |
| TA98 | A04.5.01.018M A09.3.04.003 |
| TA2 | 2374, 3617 |
| FMA | 21531 |
| Anatomical terms of muscle | |
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