Axial Muscles Flashcards
Four Properties of Muscle
- Elasticity
- Extensibility
- Excitability
- Contractility
Elasticility
ability to go back to original shape after being extended
Contractility
the ability of muscle cells to forcefully shorten.
Excitability
the ability to respond to a stimulus, which may be delivered from a motor neuron or a hormone
Muscles of the tongue (names end in)
Names end in glossus
Muscles of Facial Expression
what do u think they do
Occipitofrontalis muscle
muscle that runs to the back from forehead
Epicranial aponeurosis
connective tissue that connects front and back of head
Corrigatorsupersili
Action
wrinkling your eyebrow
Procerus + Action
Nose bridge that wrinkles nose
Nasalis Action
Expand for increased airflow
Depressor labii and angulii Action
Pulls down lip
Levator labii and anguli
pulling up corner of lips
Orbicularis oculii
closes eye
Orbicularis Oris (location)
around the mouth
Buccinator
cheek muscles
Mastication Muscles
Move the mandible
Masseter
The strongest jaw muscle for biting down
Temporalis
Helps lift the mandible
Pterygoid
- located in underside of jaw
Position mandible for chewing
Mentalis
Wrinkles chin
Risorius
- opens mouth
- laughing
Platysma
thin muscle on neck skin that is for cover
Extrinsic Eye Muscles
Control position of eye
Superior Rectus
move eye up
Inferior Rectus
move eye down
Medial Rectus
move to the middle
Lateral Rectus
move away from middle
Inferior and Superior Oblique
eye twisting/trying to keep forward
Sternocleidomastoid
sternum to corner of mastoid to clavicle
moves head side to side and flexes neck
