Cremaster
Cremaster
Cremaster (/krɪˈmæstər/; from the Greek κρεμαστήρ kremastēr "suspender") is a muscle that covers the testicles and the spermatic cord. The cremaster muscle is part of the spermatic cord. When this muscle contracts, the cord is shortened and the testicle is moved closer up toward the body, which provides slightly more temperature control.
Function
The primary function of the cremaster muscle is to control the position of the testicles. It can raise and lower the testicles in response to temperature changes, sexual stimulation, or fear. This helps to maintain the optimal temperature for sperm production.
Anatomy
The cremaster muscle originates from the internal oblique and the inguinal ligament. It is a thin layer of skeletal muscle found in the inguinal canal and scrotum between the dartos and the external spermatic fascia, surrounding the testis and spermatic cord.
Clinical significance
The cremasteric reflex is a superficial reflex observed during a physical examination. It is elicited by lightly stroking the superior and medial part of the thigh—regardless of the direction of stroke. The normal response is an immediate contraction of the cremaster muscle that pulls up the testis on the side stroked.
Related terms
External links
- Medical encyclopedia article on Cremaster
- Wikipedia's article - Cremaster
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