#Head and Neck...
#lecture14 ...

#platysma_muscle :-

#Origin :-

Superficial fascia of the upper part of thorax (covering pectoralis major and deltoid ) is thin and broad muscle.

#Insertion :-

Lower broad of the mandible.

#Nerve supply :-

Cervical branch of facial nerve.

#Action :-

Depression of the mandible and angle of the mouth.




#From dr.Butheina...🌸✨
✍✍✍✍✍



@KDentistry

#Splenius_capitis_muscle :-

#Origin :-

Lower part of ligamentum nuchae.
Upper eourthoraci spines.

#Insertion :-

Mastoid process and outer part of superior nuchae line.

#Nerve supply :-

Segmental innervation from the dorsal rami of spinal nerve.

#Action :-

Extension of the neck.



#From dr.butheina...🌸✨
✍✍✍✍✍



@KDentistry

#Levator_scapulae_muscle :-

#Origin :-

Transverse processes of upper four cervical vertebrae.

#Insertion :-

Upper part of medial border of scapula.

#Nerve supply :-

C3,4 and border scapula nerve C5.

#Action :-

Elevation of scapula.



#From dr.butheina...🌸✨
✍✍✍✍✍



@KDentistry