Please enable JavaScript.
Coggle requires JavaScript to display documents.
Muscles of the Human Body - Coggle Diagram
Muscles of the Human Body
Facial Expression
lie within subcutaneous layer
originate from bones of skull or fascia
insert into skin
muscles move skin rather than joints
2 groups of muscles
sphincters
close orifaces
dilators
dilate/open orifaces
Eyeball and Eyelid
extrinsic eye muscles
originate outside the eyeball
insert into outer surface of sclera
3 pairs control movement of the eye
superior and inferior recti
lateral and medial recti
superior and inferior obliques
levator palpebrae superioris muscle
splits off from superior rectus during development
raises upper eyelids and opens eyes
actions for the eyelid/eyeball
elevation
depression
abduction
adduction
medial rotation
lateral rotation
Mandibular Mastication and Speech
muscles that move the mandible at the TMJ
3 muscles are powerful closers of the jaw and strengthen the bite
masseter
temporalis
medial pterygoid
medial and lateral pterygoid
assist in mastication by moving the mandible from side to side to grind food
protract mandible/ move it forward (lateral)
actions on the mandible
elevation
depression
retraction
protraction
side-to-side movement
Lingual Mastication and Speech
tongue functions
mastication
detection of taste
deglutition
speech
tongue attachment sites
hyoid bone
mandible
styloid process of temporal
divided into lateral halves by fibrous septum that extends throughout length of tongue
septum attaches to hyoid
extrinsic tongue muscles
originate outside of tongue
insert into tongue
mve entire tongue in different directions (lateral, ant, post)
intrinsic tongue muscles
originate and insert within the tongue
alter shape of tongue
tongue actions
depression
elevation
retraction
protraction
-glossus
tongue
Anterior Neck involved in Deglutition and Speech
2 groups stabilize the hyoid
suprahyoid muslce
location: above hyoid
function: elevate the hyoid, floor of oral cavity, and tongue during deglutition
infrahyoid muslce
location: below the hyoid
function: depress hyoid and parts of larynx during swallowing and speech
actions on the hyoid
elevation
drawing it anteriorly
depression
actions on the thyroid cartilage
elevation
depression