Muscles Flashcards
Where does the Platysma attach?
Skin over the mandible, neck, and clavicle
What is the action of the Platysma?
Wrinkle the skin of the neck
The Platysma is innervated by the
Facial nerve
What are the PROXIMAL attachments of the trap?
Spinous processes and base of skul
What are the DISTAL attachments of the trap?
Spine of scapula, acromion process, and clavicle
What is the general action of the trapezius
Scapular movement
What are the DISTAL attachments of the sternocleidomastoid?
Manubrium of sternum and clavicle
What is the PROXIMAL attachment of the sternocleidomastoid?
Mastoid process
What is the UNILATERAL action of the sternocleidomastoid?
Rotation of the head to the opposite side and movement of ear towards shoulder
What is the BILATERAL function of the sternocleidomastoid>
Flexion of the neck
The trapezius AND sternocleidomastoid are BOTH innervated by the
Accessory nerve
Where do the longus capitus and longus coli attach?
Vertebral bodies and transverse processes
Where do the semispinalis and splenius capitus attach?
Vertebral spinous and transverse processes and the skull
Where do the anterior, middle, and posterior scalenes attach?
Transverse processes and Ribs
Where does the levator scapulae attach?
Transverse processes and Scapula
What is the action of the longus capitus and longus coli?
Head and neck flexion
What are the actions of the semispinalis and splenius capitus?
HEad and neck extension
What are the actions of the Scalenes and the levator scapulae
Lateral bending of the head and neck
The longus coli and longus capitus are innervated by the
Ventral rami of cervical spinal nerves
The semispinalis and splenius capitus are innervated by the
Dorsal rami of cervical spinal nerves
The scalenes are innervated by
Ventral rami of cervical spinal nerves
The levator scapulae is innervated by the
Dorsal scapular nerve
The stylohyoid ataches to the
Styloid process and hyoid
The posterior belly of the digastric attaches to the
Mastoid process and hyoid
