Muscles and Nerves

______ depresses the hyoid bone from an elevated position.

______ depresses and retracts hyoid and larynx and tenses carotid sheath

_____ depresses the larynx.

______ depresses hyoid bone and elevates larynx

Which of the following are infrahyoid laryngeal muscles? Select all that apply.

_____ elevates the hyoid bone posteriorly.

_______ depresses mandible and elevates hyoid bone during chewing and swallowing

______ forms the floor of oral cavity, elevates hyoid bone and floor of mouth, depresses mandible

_____ elevates and draws hyoid bone anteriorly; shortens mouth floor, widens pharynx

Which of the following are suprahyoid muscles? Select all that apply

____ raise sternum and ribs during respiration

______ steady or elevate ribs during inspiration - when neck is in fixed position

____ flexes shoulder joint from extended position

_____ pulls shoulder girdle forwards and downwards.

_______ increase intra- abdominal pressure for evacuation of abdominal contents during defecation (bowel movement), micturition (pee) and parturition (giving birth).

_____ largest muscle in upper body - extension, adduction, transverse extension of arm for extended position, medial internal rotation of shoulder- aids in deep inspiration.

____ elevates ribs.

_____ pulls ribs downwards and backwads.

____ draws thyroid cartilage down, pulls larynx forward and downward

_____ decreases distance between the thyroid cartilage and hyoid bone.