Neuro Flashcards
Which ear structure:
Helps sound localization
Auricle
Which ear structure:
Most efficient at directing high frequency sounds to ear
Auricle
Which ear structure:
Helps localization
Auricle
What is the external auditory canal lined with?
Cerumen glands
What is the structure of the outer 1/3rd and inner 2/3rds of external auditory canal?
Outer 1/3: Cartilage
Inner 2/3: Mastoid bone
What is the function of the auditory external canal?
Increase sound pressure at TM by 5-6 dB
Which ear structure converts acoustic energy into mechanical energy?
TM
What does the TM seperate?
Barrier to external (outer) and middle ear
What are the 4 main components of hearing?
Inner
Middle
Outer Ear
Central Auditory NS
Which bone moves in and out of the oval window of the cochlea?
Stapes
Which ear structure aids in balance?
Vestibulo… finish
Which ear structures help equalize pressure?
Eustachian Tube
which ear structure is the acoustic reflex?
Stapedius muscle
Contracts w/ loud noise
Which ear structure connects the stapes to the middle ear?
Stapedius muscle
Which ear structure converts mechanical energy into electrical energy?
Cochlea
Name the salivary glands. Which is largest?
Parotid Gland (largest)
Submandibular Gland
Sublingual Gland
Where is the parotid gland located?
Wrapped around the mandibular ramus
Which artery supplies the Parotid Gland?
External carotid
Which vessels drain the Parotid Glands?
Internal + External Jugular
Which lymph node drains the parotid gland?
Preauricular lymph node
Nasal Muscles - Elevator, Depressor, or Compressor?:
Alar Nasaris
Depressor
Nasal Muscles - Elevator, Depressor, or Compressor?:
Depressor Septi Nasi
Depressor
Nasal Muscles - Elevator, Depressor, or Compressor?:
Transverse Nasalis
Compressor
Nasal Muscles - Elevator, Depressor, or Compressor?:
Procerus
Elevator
Nasal Muscles - Elevator, Depressor, or Compressor?:
Levator Labii Superioris Alaque Nasi
Elevator
Which 4 arteries supply the sellar and dorsal areas of the external nose?
Facial artery
Maxillary artery
Ophthalmic Arteries
Infraorbital artery
Which lymph nodes are responsible for posterior drainage of the superior mucosa?
Retropharyngeal lymph nodes
Which lymph nodes are responsible for anterior drainage of the superior mucosa?
Upper Deep Cervical
Submandibular
CN V
Name
Trigeminal Nerve
CN V - 3 branches
Ophthalmic
Maxillary
Mandibular
How many cranial bones?
8
How many facial bones?
14