REVIEW INTRO.
MUSCLES OF FACE & NECK
Rectus fibers
Under splenius
Oblique fibers
The muscle name biceps means it has 2 ____________.
origins
When a muscle contracts and shortens, its ________ is pulled toward its _________.
insertionorigin
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
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
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
What are muscles called that contract to stabilize nearby joints?
Synergists
Fig. 9.25c
Lateral pterygoid
Lateral pterygoid
What is the primary function of the orbicularis oculi?
Close eyes
Fig. 9.25c
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
maximuslongusbrevis
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
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 compressi
on on lacrimal gland to secrete tears
Orbicularis oculi
The general term for the muscle that contracts to cause the desired action.
Prime mover or agonist
Orbicularis oris
Known as the Kissing Muscle
Name the muscles of mastication.
Masseter
Temporalis
Medial pterygoid
Lateral pterygoid.
Give the Term for the Direction of fascicles relative to midline
• = parallel• = perpendicular• = at 45o angle
rectustransverseoblique
Give the Shape of each muscle
•deltoid =
•trapezius =
•serratus =
orbicularis =
triangle
trapezoid
saw-toothed
circular
Epicranius aponeuros
is
Semispinalis capitus
Both of the orbicularis muscles are =
a ring of muscle that contracts to close an opening; it works much like a drawstring
sphincter muscles
Zygomaticus
The “smiling muscle”
Sternocleidomastoid