Home > Preview
The flashcards below were created by user
on FreezingBlue Flashcards.
This muscle raises the eyebrows and draws the scalp forward
frontal belly of the epicranius
what is the action of the occipital belly of the epicranius
pulls scalp posteriorly, fixes the galea aponeurotica
What is the action of the frontal belly of the epicranius
- raises eyebrows
- draws scalp forward
What is the action of the zygomaticus major
draws lateral corners of mouth outward and upward
What is the action of the orbicular is oris?
- closes lips
- protrudes lips
what is the action of the buccinator?
- compresses cheeks
- holds food between the teeth
what is the action of the temporalis
- elevates mandible
- retracts mandible
- assists in side-to-side mandible movement
What is the origin of the masseter
O: zygomatic arch and maxilla
What is the insertion of the masseter?
I: angle and rams of mandible
What is the action of the masseter?
mastoid process of temporal bone
manubrium and clavicle
- each alone rotates the face toward the opposite side
- both together flex the head
A: external intercostals
A: elevates the ribs for inspiration
A: Internal intercostals
- depresses ribs for forced expiration
- not needed for passive expiration
- flattens the floor of the thoracic cavity
- causes inspiration of air
- compresses abdominal organs
A: rectus abdominis
- flexes and rotates lumbar vertebral column
- compresses abdomen to aid in expulsive movements
O: rectus abdominis
I: rectus abdominis
- I: costal cartilages 5-7
- xiphoid process of the sternum
A: external oblique
- when contracted simultaneously, flex lumbar vertebral column, compress abdomen, aide in expulsive movements
- acting individually, each muscles causes lateral flexion of vertebral column, rotation of trunk toward opposite side
A: internal oblique
same actions as external oblique except rotation of the trunk is to the same side.
A: transversus abdominis
- compresses abdomen
- increases intra-abdominal pressure
What would you like to do?
Home > Flashcards > Print Preview