Skeletal Muscles I - Attachments and Innervations

Zygomaticus Origin

Zygomatic Bone

Zygomaticus Insertion

Skin and Muscle at Corner of the Mouth

Zygomaticus Innervation

Facial Nerve

Masseter Origin

Zygomatic arch and Zygomatic Bone

Masseter Insertion

Angle and Ramus of Mandible

Masseter Innervation

Trigeminal Nerve

Sternocleidomastoid Origin

Manubrium of Sternum and Medial Portion of Clavicle

Sternocleidomastoid Insertion

Mastoid Process of Temporal Bone

Sternocleidomastoid Innervation

Accessory Nerve (C2 & C3)

Levator Scapulae Origin

Transverse Process of C1 to C4

Levator Scapulae Insertion

Medial border of scapula that is superior to the spine

Levator Scapulae Innervation

C3-C5 and Dorsal Scapular Nerve

Supraspinatus Origin

Supraspinous Fossa of Scapula

Supraspinatus Insertion

Greater tubercule of humerus

Supraspinatus Innervation

Suprascapular Nerve

Infraspinatus Origin

Infraspinous fossa of scapula

Infraspinatus Insertion

Greater Tubercule of Humerus

Infraspinatus Innervation

Suprascapular Nerve

Subscapularis Origin

Subscapular Fossa of Scapula

Subscapularis Insertion

Lesser Tubercule of Humerus

Subscapularis Innervation

Subscapular Nerves (C5-C7)

Deltoid Origin

Lateral 3rd of Clavicle and Acromion Spine of Scapula

Deltoid Insertion

Deltoid Tuberosity of Humerus

Deltoid Innervation

Axillary Nerve C5-C6