Muscles of the Ear Flashcards
What are the muscles of the Ear?
Tensor Tympani and Stapedius muscles
What is the origin of the Tensor Tympani muscle?
cartilaginous auditory tube
What is the insertion of the Tensor Tympani muscle?
malleus
What is the innervation of the Tensor Tympani muscle?
medial pterygoid branch of mandibular division CN V
What is the blood supply of the Tensor Tympani muscle?
ascending pharyngeal artery
What is the action of the Tensor Tympani muscle?
dampens vibrations of tympanic membrane
What is noteworthy about the Tensor Tympani muscle?
derivative of first pharyngeal arch
What is the origin of the Stapedius muscle?
wall of pyramidal eminence
What is the insertion of the Stapedius muscle?
neck of stapes
What is the innervation of the Stapedius muscle?
CN VII
What is the blood supply of the Stapedius muscle?
anterior tympanic artery
What is the action of the Stapedius muscle?
dampens vibrations of the stapes
What is noteworthy about the Stapedius muscle?
entirely enclosed in bone,
smallest voluntary muscle of the bone,
derivative of second pharyngeal arch
