THE ANTERIOR AND LATERAL ASPECTS OF THE NECK
Prof. Dr. Selda Önderoğlu
Cutaneous Nerves
Cutaneous Nerves
CERVICAL FASCIAE
SUPERFICIAL CERVICAL FASCIA
DEEP CERVICAL FASCIA
Superficial (investing) lamina (layer)
Prevertebral lamina (layer)
Pretracheal lamina (layer)
Superficial
Relations
PLATYSMA MUSCLE
STERNOCLEIDOMASTOID MUSCLE
Origin:Sternal head Clavicular head
Insertion: mastoid process N: accessory n.
F: one side-turns the face to the opposite side and bends the head to the same side
both sides: flexes the head
Muscles in the anterior neck
Suprahyoid muscles
Infrahyoid muscles
With respect to hyoid bone
INFRAHYOID MUSCLES
NAME ORIGIN-INS
Sternohyoid m: sternum-hyoid
Sternothyroid m: sternum-thyroid cart.
Thyrohyoid m: thyroid cart.-hyoid
Omohyoid m: sup belly:hyoid inf. Belly:scapula
INNERVATION
Sternohyoid:ansa cervicalis Sternothyroid: ansa cervicalis
Thyrohyoid: C1 ventral ramus(carried by hypoglossal) Omohyoid:ansa cervicalis
-Intermediate tendon inf to STCLM and then to clavicle&1st rib
SUPRAHYOID MUSCLES
name Origin-insertion
Digastric m:ant. Belly:digastric fossa post.belly:mastoid notch
Mylohyoid m.: mylohyoid line (mandible)-hyoid
Geniohyoid m.:mental spine (mandible)-hyoid
Stylohyoid m.:styloid proc.(temporal b.)-hyoid
INNERVATION
Digast:post b.-facial n. ; ant. B.: inf.alveolar n.
Mylohyoid:inf. Alveolar n.
Geniohyoid: ant ramus of C1 spin. N carried by hypoglossal n.
Stylohyoid: facial n.
intermediate tendon-
Pierces stylohoid m.&ins. To
Hyoid bone
TRIANGLES OF THE NECK
Anterior triangle- midline-stclm-inf. margin of mandible
Muscular
Carotid
Digastric (submental)
Submental
Posterior triangle - trapezius-stclm-middle 1/3 of clavicle
Occipital
Supraclavicular
Contains infrahyid mm.,
thyroid¶thyroid glands
Contains infrahyid mm.,
thyroid¶thyroid glands
Carotid triangle Bounded by:
Stclm
Dig+stylohyoid
Omohyoid (sup. B.) -Contains
-Common carotid a.
-İnternal carotid a.
-Ext. Carotid a.
-Sup. Thyroid a.v.
-Lingual a.v.
-Facial a.v.
-Occipital a.v.
-Asc.pharyn.a.v.
-Sup. Laryngeal n.
-Superior root of
Ansa cervicalis
Occipital triangle
Cervical plexus in
Occipital triangle
CAROTID SYSTEM OF ARTERIES
COMMON CAROTID ARTERY
Internal carotid artery
External carotid artery branches:
sup thyroid a.
ascending pharyngeal a.
lingual a.
facial a.
occipital a.
post. Auricular a.
Terminal branches: maxillary & superficial temporal a
Common carotid a.
L: arch of aorta
R: brachiocephalic trunk
trunk
VENOUS STRUCTURES OF THE ANTEROLATERAL NECK
ANTERIOR JUGULAR VEIN: drains the ant.aspect of the neck- drains into subclavian vein
EXTERNAL JUGULAR VEIN: formed by post. Auricular v.
+retromandibular v.-drains into subclavian v .
