The hyoid bone is located between the ________ and ________ and serves as a point of attachment for many muscles; it does not articulate with any other bone
part of hyoid that attaches to stylohyoid ligament
four ribbon-like muscles which attach to the hyoid bone. they function primarily to move the hyoid bone and larynx
omohyoid, sternohyoid, sternothyroid, thyrohyoid
The _________ and ___________ make up the superficial layer of the infrahyoid muscles. The ____________ and ___________ make up the deep layer.
upper border/scapula, body/hyoid bone, ansa cervicalis (C1, C2, C3), depresses hyoid bone and larynx
posterior surface/manubrium and medial end/clavicle, body/hyoid bone, ansa cervicalis (C1, C2, C3), depresses hyoid bone and larynx
posterior surface/manubrium (inferior to sternohyoid), oblique line/lamina of thyroid cartilage, ansa cervicalis (C1, C2, C3), depresses larynx
oblique line/lamina of thyroid cartilage, body/hyoid bone, C1 through hypoglossal nerve, depresses hyoid bone
swallowing, speech, breathing
Functions of infrahyoid muscles (depressing hyoid bone and larynx)
Fasica is a dense, sheet-like layer of ___________
superficial cervical fascia
a thin layer of connective tissue which encloses the platysma muscle, and contains cutaneous nerves, superficial veins, and lymph nodes.
investing layer of deep cervical fascia, pretracheal fascia, prevertebral fascia, carotid sheath
What are the four parts of the deep cervical fascia?
Investing layer of the deep cervical fascia
This layer lies deep to the superficial cervical fascia, and splits to enclose the sternocleidomastoid and trapezius.
This layer encloses the thyroid gland, esophagus, and trachea
This layer encloses the vertebral column and the deep muscles of the back
This layer is a cylinder of fascia which extends from the base of the skull to the root of the neck
common carotid artery, internal carotid artery, internal jugular vein, vagus nerve, deep cervical lymph nodes
The Carotid Sheath contains the...
head, neck, swallowing
The function significance of the fascial layers is that it provides a slippery surface to reduce friction during:
1) gross movements of ______ and ______
The clinical significance of fascial layers is that it may serve as a channel for __________
The ______________ may allow an infection to spread from the head and neck to the mediastinum directly.
internal jugular vein
Cancer involving the deep cervical lymph nodes can compress the ____________