Muscle Anatomy 1-15

What is the name of this muscle?

Galea Aponeurotica

What is the Origin of Galea Aponeurotica?

occipital bone

What is the Insertion of Galea Aponeurotica?

skin around eyes

What is the Action of Galea Aponeurotica?

elevates eyebrow

What is the Innervation of Galea Aponeurotica?

Facial nerve

What is the name of this muscle? (Blue)

Orbicularis Oculi

What is the Origin of Orbicularis Oculi?

Maxilla and frontal bone

What is the Insertion of Orbicularis Oculi?

Skin around eye

What is the Action of Orbicularis Oculi?

closes eye

What is the Innervation of Orbicularis Oculi?

Facial nerve

What is the name of this Muscle? (A)

Zygomaticus Major

What is the Origin of the Zygomaticus Major?

Zygomatic bone

What is the Insertion of the Zygomaticus Major?

Skin and muscle at corner of mouth

What is the action of the Zygomaticus Major

smiling

What is the Innervation of the Zygomaticus Major

Facial nerve

What is the name of this Muscle? (B)

Zygomaticus Minor

What is the Origin of Zygomaticus Minor?

Zygomatic bone

What is the Insertion of the Zygomaticus Minor?

skin and muscle at corner of mouth

what is the Action of the Zygomaticus Minor?

smiling

What is the Innervation of Zygomaticus Minor?

Facial nerve

What is the name of this Muscle?

Orbicularis Oris

What is the Origin of the Orbicularis oris?

muscles near the mouth

What is the Insertion of Orbicularis Oris?

Skin of central lip

What is the Action of the Orbicularis Oris?

closes lips; kissing

What is the Innervation of Orbicularis Oris?

Facial nerve

What is the name of this Muscle? (A)

Buccinator

What is the Origin of the Buccinator?

Alveolar processes of maxilla and mandible

What is the Insertion of the Buccinator?

Orbicularis Oris

What is the Action of the Buccinator

compresses cheeks

What is the Innervation of the Buccinator?

Facial nerve

What is the name of this Muscle? (Blue)

Platysma

What is the Origin of the Platysma?

Fascia in upper chest

What is the Insertion of the Platysma?

skin and muscles below mouth; mandible

What is the Action of the Platysma?

Depresses lower lip and angle of mouth as when pouting

What is the Innervation of the Platysma?

Facial nerve

What is the name of this Muscle? (B)

Masseter

What is the origin of the Masseter?

Zygomatic arch

What is the Insertion of the Masseter?

Lateral surface ramus of mandible

What is the Action of Masseter?

elevates and protracts mandible

What is the Innervation the Masseter?

Trigeminal nerve

What is the name of this Muscle?

Temporalis

What is the Origin of the Temporalis?

Temporal bone

What is the Insertion of the Temporalis?

coronoid process of ant. ramus of the mandible

What is the Action of the Temporalis?

Elevates and retracts mandilble

What is the Innervation of the Temporalis?

Trigeminal nerve

What is the name of this muscle?

Sternocleidomastoid

What is the Origin of the Sternocleidomastoid?

Ant. surface of sternum & upper surface of clavicle

What is the Insertion of the Sternocleidomastoid?

Mastoid process of temporal bone

What is the Actions of Sternocleidomastoid?

Laterally flexes neck on same side; together pull head forward and down

What is the Innervation of Sternocleidomastoid?

Accessory, C2 and C3 cervical nerves

What is the name of these muscles from left to right?

Posterior, Middle, Anterior Scalenes

What is the Origin of the Scalene?

Transverse processes of cervical vertebrae

What is the Insertion of the Scalene?

Superior and lateral surfaces of first two ribs

What is the Individual Action of the Scalene?

Laterally flexes head and neck to the same side

What is the Together Action of the Scalene?

Elevate first two ribs during forceful inhalation

What is the Innervation of the Scalene?

Cervical spinal nerves

What is the name of this muscle?

Splenius Capitis

What is the Origin of the Splenius Capitis?

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Ligamentum Nuchae and Spinous Process of the seventh cervical and upper thoracic vertebrae

What is the Insertion of the Splenius Capitis?

Occipital bone

What is the Individual Action of the Splenius Capitis?

Rotates head to the same side

What is the Together Action of the Splenius Capitis?

Brings head to an upright position

What is the Innervation of the Splenius Capitis?

Cervical Nerves

What is the name of this Muscle?

Quadratus lumborum

What is the Origin of the Quadratus lumborum?

Iliac crest

What is the Insertion of the Quadratus lumborum?

Upper lumbar vertebrae and twelfth rib

What is Action of the Quadratus lumborum?

Extends lumbar region of vertebral column

What is the Innervation of the Quadratus lumborum?

Thoracic nerves

What are the names of these muscles from top to bottom?

Iliocostalis Cervicis, Thoracis, Lumborum

What is the name of this Muscle?

Trapezius

What is the Origin of the Trapezius?

Occipital bone, ligamentum nuchae, and spinous processes of seventh cervical and all thoracic vertebrae

What is the Insertion of the Trapezius?

Clavicle, Spine, and Acromion process of Scapula

What is the Action of the Trapezius?

Rotates and retracts Scapula, Superior portion elevates scapula, Inferior portion depresses scapula

What is the Innervation of the Trapezius?

Accessory Nerve