Fill in the Table Below: Muscle Origin and Insertion Primary Action Occipitofrontalis O: epicranial aponeurosis I:...

Fill in the Table Below:

Muscle	Origin and Insertion	Primary Action
Occipitofrontalis	O: epicranial aponeurosis I: skin superior to supraorbital margin	Raises eyebrows
Oribulari oculi
Zygomaticus major
Orbicularis oris
Masseter
Buccinator
Sternocleidomastoid

Expert Solution

Muscle	Origin & Insertion	Action
1.Occipito Frontalis	Origin:Epicranial aponeurosis Insertion:Skin superior to Supra Orbital Margin	Raises Eyebrows
2.Orbicularis Oculi	Origin:front of the orbital margin- rim of the socket of eye Insertion:Lateral palpebral raphe,located on outer part of socket of eye.	1.To close the eye involuntarily & voluntarily ( 2.Help flow of tears out of the eyes.
Zygomaticus Major	origin: lateral surface of the zygomatic bone Insertion:Modiolus, it blends with other upper lip muscles	it is a muscle that helps facial expression-It draws angle of mouth upward & outward
Orbicularis Oris	Origin: mid-line of mandible& maxilla. Insertion: tissues of upper &lower lips	Puckering of the lips,which helps- 1. kiss 2.play wind instrument 3.whistle song
Masseter	Origin: Inferior border of zygomatic arch Insertion:Inserts to superficial side of ramus of mandible	Elevate the mandible by raising the lower jaw which helps to close mouth
Buccinator	Origin:1.alveolar processes-The thickened parts of mandible & maxilla which form the teethsocket 2.Pterygo-mandibular raphe- thick layer of connective tissue in cheek	It helps to a.pull back angle of mouth b. flatten the cheek , which holds cheek to the teeth during chewing
Sternocleidomastoid	Origin- a. Manubrium of the sternum b.Clavicle. Insertion:mastoid process of temporal bone .	1.Rotation of the head to opposite side 2.Flexion of neck.

Sydney Mullin answered 1 year ago

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