muscles of the neck

inferior border of mandible, superficial fascia of the lower face, and skin

fascia overlying the superior parts of the pectoralis major muscle and deltoid muscle

cervical branch of the facial nerve

inferiorly draws four corners of mouth; and widens it; superiorly raise the skin of the neck when teeth are clenched, thus showing tension

• facial artery/ v.
• transverse cervical a./v.
• anterior jugular v.
• cutaneous cervical a./ v.

• manubrium of the sternum
• medial end of clavicle

body of hyoid bone

C1 - C3 by branches of ansa cervicalis

depress the hyoid bone; after elevation from swallowing

superior and inferior thyroid artery and vein

styloid process of the temporal bone

body of the hyoid bone

stylohyoid branch of the facial nerve

elevate and retract the hyoid; elongating the floor of the mouth

• facial a./v.
• lingual a./ v.

olique line of the thyroid cartilage

• inferior border of the hyoid bone
• greater horn of hyoid bone

C1 by hypoglossal nerve

depress the hyoid and elevates the larynx

• superior thyroid a./ v.
• inferior thyroid a./ v.

• lateral surface of the mastoid process of temporal bone
• lateral half of superior nachel line

• sternal head: anterior surface of the manubrium
• clavicular head: superior surface ofmiddle 3rd of clavicle

spinal accessory nerve and C2 & C3

unilateral: turning head to same side and rotates it so face is turned superiorly towards opposite side

bilateral: allows chin to head towards manubrium; chin is thrust forward with head kept level

superior thyroid a./ v.

superior border of the scapula near the suprascapular notch

inferior border of the hyoid bone

C1 - C3 by branches of ansa cervicalis

depress, retract and steady the hyoid bone

superior and inferior thyroid a./ v.

posterior portion of the manubrium

oblique line of the thyroid cartilage

C2 and C3 by branches of ansa cervicalis

depress the hyoid and larynx

superior and inferior thyroid a./ v.