open access

Vol 61, No 4 (2002)
CASE REPORTS
Published online: 2002-08-29
Submitted: 2012-02-06
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Multiple muscular variations in the neck region - case study

Nigar Coskun, Fatos Belgin Yildirim, Olcay Ozkan
Folia Morphol 2002;61(4):317-319.

open access

Vol 61, No 4 (2002)
CASE REPORTS
Published online: 2002-08-29
Submitted: 2012-02-06

Abstract

During routine educational dissection studies, we encountered multiple muscular anomalies in a 25-year-old embalmed male cadaver. The muscular anomalies were observed on the right side. In accordance with their origin, insertion and innervation features, the abnormal muscles were considered sternocleidooccipital, sternomastoid and cleidomastoid muscles. The unilateral muscle variations were observed in both the superficial and deep layer. In the superficial layer, there were two muscles and one muscle bundle, while there was only one muscle in the deep layer. The first muscle in the superficial layer, known as sternocleidooccipital muscle, consisted of clavicular head and sternal head. The second muscle in the superficial layer was sternomastoid muscle. The muscle observed in the deep layer was cleidomastoid muscle. Additionally, a muscular bundle was observed between the sternocleidooccipital and sternomastoid muscles. A combination of these variations in the same case has not, to our knowledge, been previously described in the available literature.

Abstract

During routine educational dissection studies, we encountered multiple muscular anomalies in a 25-year-old embalmed male cadaver. The muscular anomalies were observed on the right side. In accordance with their origin, insertion and innervation features, the abnormal muscles were considered sternocleidooccipital, sternomastoid and cleidomastoid muscles. The unilateral muscle variations were observed in both the superficial and deep layer. In the superficial layer, there were two muscles and one muscle bundle, while there was only one muscle in the deep layer. The first muscle in the superficial layer, known as sternocleidooccipital muscle, consisted of clavicular head and sternal head. The second muscle in the superficial layer was sternomastoid muscle. The muscle observed in the deep layer was cleidomastoid muscle. Additionally, a muscular bundle was observed between the sternocleidooccipital and sternomastoid muscles. A combination of these variations in the same case has not, to our knowledge, been previously described in the available literature.
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Keywords

sternocleidooccipital muscle; sternomastoid muscle; cleidomastoid muscle; muscular bundle; neck dissection; variation

About this article
Title

Multiple muscular variations in the neck region - case study

Journal

Folia Morphologica

Issue

Vol 61, No 4 (2002)

Pages

317-319

Published online

2002-08-29

Bibliographic record

Folia Morphol 2002;61(4):317-319.

Keywords

sternocleidooccipital muscle
sternomastoid muscle
cleidomastoid muscle
muscular bundle
neck dissection
variation

Authors

Nigar Coskun
Fatos Belgin Yildirim
Olcay Ozkan

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