Helicis minor
Helicis minor | |
---|---|
Details | |
Origin | Base of the helical crus |
Insertion | Anterior aspect of the helical crus |
Artery | Auricular branches of posterior auricular and auricular branch of occipital arteries |
Nerve | Posterior auricular nerve a branch of the facial nerve |
Actions | Adjusting the shape of the anterior margin of the ear cartilage |
Identifiers | |
Latin | musculus helicis minor |
TA98 | A15.3.01.038 |
TA2 | 2094 |
FMA | 48971 |
Anatomical terms of muscle |
The Helicis minor (musculus helicis minor or smaller muscle of helix) is a small
intrinsic muscle of the outer ear. The muscle runs obliques and covers the helical crus, part of the helix located just above the tragus
.
The helicis minor originates from the base of the helical crus, runs obliques and inserts at the anterior aspect of the helical crus where it curves upward above the tragus.[1]
The function of the muscle is to assist in adjusting the shape of the anterior margin of the ear cartilage. While this is a potential action in some individuals, in the majority of individuals the muscle modifies auricular shape to a minimal degree.[1]
The helicis minor is developmentally derived from the
primates is the helicis major and minor two distinctive muscles.[2]
Additional images
See also
- Intrinsic muscles of external ear
- Helicis major
References
This article incorporates text in the public domain from page 1035 of the 20th edition of Gray's Anatomy (1918)
- ^ a b c "Helicis minor". AnatomyExpert. Retrieved 9 March 2013.
- ISBN 978-1-57808-767-9.
External links