MUSCLES

how do parallel muscle fascicles go and msucle ex

up/down left/right

ex; bicep brachii

convergent muscle fasicles arrangement and ex

common attachment point from a broad surface (fan)

pectoralis

pennate muscles define

ex

pull at an angle and have more muscle fibers

deltoid

circular muscles define

ex

diameter around opening gets smaller when contracted

orbicularis oris

if an action corsses the anterior side of the joit it is considered?

flexor

If an action crosses the posterior side of the joint, it is considered.

extensor

define agonist

prime mover, muscle most responsible for providing movement

define antagonist

muscle that opose action of agonist for CONTROL

define synergist

assist the agonist by providing additional pull

define fixator

supports agonist by providig stability and limit movemnt of origin

define oblique

slanting

define rectus

straight

define transverse

side to side

define teres

round and long

define brevis

short

function of axial muscles

position head, ribs, spine and involved in bretahing and pelvic floor

function of appendicular muscles

stabiize pectoral girdle, pelvic girdle and upper and lower limbs 

zygomaticus define movement

smiling muscle

buccinator define movement

sucking in cheecks

orbicularis oculi define movement

winking

orbicular oris define movement

kissing/whistling

masseter define movement

chewing

temporalis define movement

synegrist muscle for jaw closure

sternocleidomastoid define movement

mddoing head

buccinator 

location 

function 

mandible/mxilla → obicular oris 

sucking in cheeks (moves food across teeth)

superior rectus

location 

function

superior part of eye 

rotates eye upwards

medial rectus

location 

function 

medial aspect of eye

rotates eye meially 

inferior rectus

location 

function 

inf aspect of eye 

rotates eye downward

superior oblique

location 

function 

on the superio aspect of the eye behind the rectus sup

rotates eye downward and laterally 

inferior oblique

location 

function 

on inferiro aspect of eye

rotates eye upward and medially 

lateral rectus

location 

function 

rotates eye laterally 

function of glossus muscles and insertion point 

control position of tongue

tongue is insertion point 

why are the palatoglossus, styloglossus and hyoglossus important

eating and speech

masseter

location 

function 

corner of jaw to cheack

elevates mandible and CLOSES jaw

occipitofrontalis- occipital belly

location 

function 

posterior, occipitl and temporal bone

tenses and retract scalp

occipitofrontalis- frontal belly

location 

function 

foreheda and dome of skull

raises eyebrows and wrinkles forehead

orbicularis oculi

location 

function 

circular muscle around eye 

closes eye 

skin is moving (this is insertion point!)

orbicularis oris

location 

function 

circular muscle around the mouth 

contricts opening of mouth, chewing, kissing 

skin is moving (this is insertion point!)

medial pterygoid

location 

function 

vertical muscle

closes jaw, elevates mandible 

lateral pterygoid

location 

function 

horizontal muscle 

opens jaw and protrudes mandible