Thorax, Head and Neck Muscles Flashcards
Sternohyoid attachments
From the posterior proximal clavicle and manubrium to the inferior border of the body of hyoid bone
Sternothyroid attachments
From the posterior manubrium and 1st costal cartilages to the thyroid lamina
Thyrohyoid attachments
From the thyroid lamina to the greater horn of the hyoid bone
Omohyoid attachments
From the superior border of the scapula medial to the scapular notch to the lateral aspect of the hyoid bone (through a sling of the intermediate tendon), loosely associated with clavicle and 1st rib
Mylohyoid attachments
From the mylohyoid line of the mandible to the midline raphe and anterior aspect of the body of the hyoid bone
Geniohyoid attachments
From the inferior genial tubercle of the mandible to the anterior aspect of the body of the hyoid
Anterior Digastric Attachments
From the digastric fossa of the mandible to the intermediate tendon, greater horn, and body of the hyoid
Post Digastric Attachments
From the mastoid process of the temporal bone to the intermediate tendon, greater horn, and body of the hyoid
Stylohyoid attachments
From the styloid process of the temporal bone to the greater horn of the hyoid bone
Which anterior neck muscles depress the mandible?
Anterior digastric, Post digastric, Geniohyoid
Which anterior neck muscles elevate the hyoid?
Anterior digastric, Post digastric, Geniohyoid, and Stylohyoid
Which anterior neck muscle elevates the tongue?
Geniohyoid
Which anterior neck muscles elevates the floor of the oral cavity?
Mylohyoid
Which ant neck muscles depress the hyoid?
Omohyoid, Sternohyoid, Thyrohyoid
What ant neck muscles depress the elevated larynx?
Stenothyroid
Which ant neck muscle retracts the hyoid?
Stylohyoid (also elevates)
Which muscle elevates the thyroid cartilage and depresses the hyoid bone?
Thyrohyoid
Longus capitis attachments, innervation, and actions
from the ant tubercle of the transverse processes of cervical vertebrae to the basilar occipital bone
flexion of the head and neck and ipsilateral rotation
ventral rami of cervical spinal nerves (C1-3)
Longus coli attachments, innervation, and actions
from the cervical vertebral bodies to the cervical vertebral bodies & transverse processes
flexion, lateral flexion of the neck and ipsilateral rotation
ventral rami of cervical spinal nerve (C2-7)
anterior scalene attachments, innervation, and actions
from the anterior tubercles of middle cervical vertebrae to the scalene tubercle of the first rib
elevation of 1st rib during forced inspiration, flexion, lateral flexion, and contralateral rotation of the neck
lower ventral rami of cervical spinal nerves
middle scalene attachments, innervation, and actions
from the transverse processes of cervical vertebrae to 1st rib
elevation of 1st rib during forced inspiration, lateral flexion and contralateral rotation of the neck
lower ventral rami of cervical spinal nerves
posterior scalene attachments, innervation, and actions
from the lower cervical transverse processes to the 2nd rib
elevation of the rib during forced inspiration and lateral flexion and contralateral rotation of the neck
ventral rami of cervical spinal nerves (C6-8)
Innervation of anterior neck muscles by CN VII of which ant neck muscles
stylohyoid and posterior digastric
Innervation from V3 of which ant neck muscles, and what specific branches
mylohyoid and ant digastric by the nerve to mylohyoid which branches of inferior alveolar n.
Innervation from ansa cervicalis of which ant neck muscles and what spinal segments
inf and sup omohyoid, sternohyoid, sternothyroid
C1-C3
Innervation from ventral ramus of C1 via the CN XII of which muscles
geniohyoid and thyrohyoid
