REVIEW INTRO. MUSCLES OF FACE & NECK

Rectus fibers Under splenius Oblique fibers

Occipitalis

The muscle name biceps means it has 2 ____________. origins

When a muscle contracts and shortens, its ________ is pulled toward its _________. insertion origin

Masseter

Temporalis

Buccinator

What is the term that refers to a ring of muscle that contracts to close an opening; it works much like a drawstring? sphincter

The epicranius consists of what 2 muscles? Frontalis Occipitalis

What is the primary function of the orbicularis oris? closes and protrudes the lips

Zygomaticus

Known as the pouting muscle Platysma

When you clench your mouth hard, what muscle is the prime mover that can be palpated in the cheek area? masseter

The primary function of the frontalis working with the occipitalis is to __________________________. raises eyebrows and creates wrinkles in forehead

Orbicularis oris

What is the primary function of the zygomaticus? raises the corner of the mouth; smiling

Name the Skeletal Muscle Actions : = decreasing the angle between 2 bones = decreasing the angle between the foot and shin; = pointing toes; = increasing the angle between 2 bones = moving a body part away from the midline = moving a body part toward the midline Flexion Dorsiflexion Plantar flexion Extension Abduction Adduction

Frontalis

What are muscles called that contract to stabilize nearby joints? Synergists

Lateral pterygoid

What is the primary function of the orbicularis oculi? Close eyes

Medial pterygoid

The ____________ of a muscle is its immovable (anchored) end. origin

Orbicularis oculi

Buccinator Also known as the “trumpeter’s muscle”

TMJ The primary muscles involved are the following: temporalis, masseter, medial pterygoid, and lateral pterygoid Name the muscles involved with TMJ.

= movement in a circular (cone- shaped) motion = turning movement of a bone about its long axis; (i.e.atlas/axis) = turn at elbow so palms are up = turn at elbow so palms are down = sole of foot in = sole of foot out = lifting a body part; (i.e. shoulder shrug) = returning a body part to pre-elevated position. Circumduction Rotation Supination Pronation Inversion Eversion Elevation Depression

Give the term for the Relative Size of a muscle = largest = longest = shortest maximus longus brevis

Frontalis Name the muscle that does this action.

Name muscles of facial expression. Orbicularis oculi Orbicularis oris Epicranius (frontalis and occipitalis Buccinator Zygomaticus platysma

The frontalis is connected to the occipitalis by the_______________________ epicranial aponeurosis

Muscle that causes “crows feet” wrinkles Orbicularis oculi

Occipitalis

Oribicularis oculi

Do you know what TMJ is, its causes and its treatments ? Review page 308 in text.

the winking muscle Orbicularis oculi

Muscle that allows compression on lacrimal gland to secrete tears Orbicularis oculi

Platysma

The general term for the muscle that contracts to cause the desired action. Prime mover or agonist

Orbicularis oris Known as the Kissing Muscle

Platysma

Name the muscles of mastication. Masseter Temporalis Medial pterygoid Lateral pterygoid.

Splenius capitus

Give the Term for the Direction of fascicles relative to midline = parallel = perpendicular = at 45 o angle rectus transverse oblique

Give the Shape of each muscle deltoid = trapezius = serratus = orbicularis = triangle trapezoid saw-toothed circular

Frontalis

Epicranius aponeurosis

Buccinator

Zygomaticus

Semispinalis capitus

Temporalis

Platysma

Both of the orbicularis muscles are = a ring of muscle that contracts to close an opening; it works much like a drawstring sphincter muscles

Orbicularis oris

Zygomaticus The “smiling muscle”

Sternocleidomastoid