Head and neck muscles Flashcards
Why was you to close your eyes, squints, blink, wink
Orbicularis occuli
It allows you to raise your eyebrows and
Frontalis
Pulls the scalp posteriorly
Occipitalis
Origin and insertion of the orbicularis oculi are
The origin is the frontal bone and maxilla and insertion is the tissue around the eyes
Origin and insertion of Frontalis
O:cranial aponeurosis
I: skin of the eyebrows
What direction do fibers of the orbicularis occuli run
Circles around the eye
Allows you to protrude your lips and play a brass instrument
Orbicularis oris
What direction does the Buccinator run
Horizontally across the cheek
Origin and insertion of the orbicularis oris
The origin is the mandible and maxilla and the insertion is the skin around the mouth
Origin and insertion of the Buccinator
The origin is the maxilla and mandible and the insertion is orbicularis oris
How does the masseter close the jaw
By elevating the mandible
Allows you to wrinkle your forehead
Frontalis
Allows you to flatten cheek when whistling, blowing, and chewing
Buccinator
Raisescorner of the mouth upward
Zygomaticus
Origin and insertion of a masseter
The origin is the zygomatic process and insertion is the mandible
Potholes muscles of mouth anteriorly to make a sad face
Platysma
Covers the angle of lower jaw
Masseter
allows you to close your mouth
Orbicularis oris
Origin and insertion of zygomaticus
Insertion is the corner of the mouth
origin is the cheekbone
Origin and insertion of sternocleidomastoid
Both heads insertion is at the mastoid process
the origin of one head it is the sternum and the other is the clavicle
Ask as a synergist to the masseter
Temporalis
The kissing muscles
Orbicularis oris
Extends head/neck up
Trapezius
Origin and insertion of temporalis
Origin is the Temporel bone and insertion is the mandible
Location of occipitalis
Attaches to posterior end of a cranial aponeurosis and covers posterior end of scull
Tenses the skin of the neck like while shaving
Platysma
Both heads at the sternocleidomastoid allow you to do what
Flex the neck
If one head of the sternocleidomastoid is contracted what happens
The head is rotated toward the shoulder on opposite side and it helps to head to its own side this is what allows you to raise sternum when inhaling
What is another name for the sternocleidomastoid
The prayer muscle because it allows you to bow your head
Location and origin and insertion of trapezius
Posterior side of neck and upper trap the origin is also occipital bone and cervical and thoracic vertebrae
insertion is the scapular spine and clavicle
What is the location of the cranial aponeurosis
Supper cranium and attaches to frontalis and occipitalis
Location and origin and insertion of Platysma
Covers the Anterolateral neck
the origin is connected tissue covering of the chest muscles the insertion is the area around the mouth
The trapezius is is the antagonist of what
Sternocleidomastoid
Helps to get expression such a surprise
Cranial aponeurosis
Elevates, depresses, addiction , stabilizes, the scapula
Trapezius
