Larynx Muscle (Based on Attachments)



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Larynx Muscle (Based on Attachments)

Muscles

Origin

Attachment

Action

Inferior Pharyngeal Constrictor




Lateral side of Thyroid Cartilage




Thyrohyoid

Hyoid

Lateral side of Thyroid Cartilage




Sternothyroid

Sternum

Lateral side of Thyroid Cartilage




























Cricothyroid muscle

Anterolateral of Cricoid Cartilage

Inferior horn of the Thyroid Cartilage

Raises pitch of voice, Tensor

Lateral Circoarytenoid

Lateral pt. of Cricoid Cartilage

Muscular Processes of Arytenoid Cartilage

Closes Rima Glottidis (Adduction)

Posterior Ciroarytenoid

Posterior pt. of Cricoid Cartilage

Muscular Processes of Arytenoid Cartilage

Opens the Rima Glottidis (Abduction)

Intrinsic Laryngeal muscles




Muscular Process of Arytenoid Cartilage

Open the Rima Glottidis (Abduction)

Thyroarytenoid

(Extension:Vocalis muscle= whispering)



Thyroid Cartilage

Arytenoid Cartilage

Lower pitch of voice, relaxor










Transverse Arytenoid m.

Brings Arytenoid Cartilage together

Oblique Arytenoid m.

(continues as aryepiglotic m. along aryepiglottic fold)

Tyroepiglottic m.

Brings epiglottis down



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