Review Note
Last Update: 09/19/2024 11:53 PM
Current Deck: @Medicine::Anatomiae::Muscle::back
Published
Fields:
Muscle
longus capitis
Etymology
Origin
anterior tubercles of vertebrae C3-6
Insertion
basilar portion of the occipital bone
Action
flex the head and neck
Innervation
cervical plexus, ventral primary rami of spinal nerves C1-4
Relations
Myotome
Kenhub
Artery
deep cervical a.
Netter
Notes
none
Netter Description
Clinical
C. exp
Picture
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Amboss

An abnormal tone or length of the sternocleidomastoid muscle has a variety of mechanisms (e.g., trauma, muscle tone disorders, congenital muscle tightness, extrinsic masses, ocular, etc.) and is referred to as torticollis (wry neck).


Sternocleidomastoid muscle and lesser supraventricular fossa
The
medial head (M) of the sternocleidomastoid muscle inserts into the
manubrium, while its lateral head (L) inserts into the medial end of the
clavicle. At this point, as well as at the lateral border of the neck,
the muscle is clearly visible through the skin (black arrows),
especially when rotating the head to the contralateral side against
resistance. The triangular space between the two heads of the muscle is
the lesser supraclavicular fossa (red overlay). Its caudal border is
formed by the clavicle (green overlay, white arrows).
Source: © IMPP
Extra Images
The Noted Anatomist
Surface Anatomy
Clinical Examination
Context
Subcontext
Latin
Symmetries & Correlates
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