cremaster muscle in dogs

A thin layer of skeletal muscle that envelops the spermatic cord and testis of most male mammals in a series of loops; it is a continuation of the obliquus internus, arising from the inguinal ligament and inserting into the crest of the pubis and into the sheath of the rectus abdominis; it is innervated by the genital branch of the genitofemoral nerve and functions to draw the testis up toward the superficial inguinal ring in response to cold or to stimulation of the nerve;. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the cremaster muscle is

A thin layer of skeletal muscle that envelops the spermatic cord and testis of most male mammals in a series of loops; it is a continuation of the obliquus internus, arising from the inguinal ligament and inserting into the crest of the pubis and into the sheath of the rectus abdominis; it is innervated by the genital branch of the genitofemoral nerve and functions to draw the testis up toward the superficial inguinal ring in response to cold or to stimulation of the nerve;. The atlas records it as a muscle at the organ scale in the dog.

Where the cremaster muscle is

It sits within the muscular and reproductive systems. Only the system is known. The position shown carries almost no spatial information.

What the cremaster muscle connects to

The atlas records 6 typed relationships for it, across 4 kinds of connection. part of male reproductive system and reproductive system.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the cremaster muscle. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as cremaster, muscle of Riolan (cremaster), musculus cremaster <male>, cremaster muscle, cremasteric muscle and muscle of Riolan, and 1 more. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0008488, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: male reproductive system and reproductive system.
• A kind of: anatomical structure and muscle organ.
• contributes to morphology of: musculature.
• inserts into: tunica vaginalis testis.

Questions

Where is the cremaster muscle?

It sits within the muscular and reproductive systems. Only the system is known. The position shown carries almost no spatial information.

What does the cremaster muscle connect to?

Part of: male reproductive system and reproductive system.

Is the cremaster muscle the same in other species?

This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.