Qtr 3 Head Anatomy Midterm
Home > Preview
The flashcards below were created by user
on FreezingBlue Flashcards.
What nerve runs through the stylomastoid foramen?
Facial nerve (VII)
What are the contents of the jugular foramen?
- glossopharyngeal n.
- Vagus n.
- Accessory n.
Where does the internal carotid artery enter the cranium?
what nerves enter the internal acoustic meatus?
Where do the three branches of the trigeminal nerve exit the cranium?
- Ophthalmic = superior orbital fissure
- Maxillary = foramen rotundum
- Mandibular = foramen ovale
: Standing Room Only
Where does the optic nerve exit the cranium?
What makes up the floor of the orbits?
- orbital part of maxilla
- zygomatic bone, palatine bone
What makes up the roof of the orbit?
- Frontal bone
- Small wing sphenoid
What makes up the medial orbits?
- lacrimal bone
- body of sphenoid
What makes up the lateral wall of the orbit?
- zygomatic bone
- great wing of sphenoid
What are the three parts of the orbicularis oculi muscle and what innervates it?
- Orbital part (forcibly closes eyelid)
- Palpebral part (blinking)
- Lacrimal part (dilates lacrimal sac)
- All innervated by facial nerve VII
What are the two parts of the lacrimal gland and what is the innervation?
- Orbital part
- Palpebral part
- Secretomotor = Facial nerve
- Sensory = Trigeminal nerve
What is the origin of all rectus muscles of the eye?
Common tendinous ring
Which extraocular muscle does not insert into the sclera?
- Levator palpebrae superioris
- Insertion: Superor tarus and upper lid
What makes up the uveal tract?
What are the main functions of the structures of the ear?
What are the functions of the external auditory meatus?
Which has more sodium or potassium the perilymph or endolymph?
- perilymph = sodium
- Endolymph = Potassium
P's dont go together
What part of the cochlea carries high and low frequencies respectively?
What does the utricle detect?
linear acceleration and gravity in horizontal plane
What does the saccule detect?
linear acceleration and gravity in vertical plane
What contains the cupula of the semicircular canals?
What acts like the cupula in the utricle and saccule
What is the etiology of benign paroxysmal positional vertigo BPPV?
Otoliths become dislodged from vestibule and circulate the semi-circular canals (Posterior is most common)
What may vertical nystagmus indicate?
Supraorbital, supratrochlear, lacrima, infratrochlear, and external nasal are all branches of what cranial nerve?
Ophthalmic division of trigeminal
Where do all fibers of the facial nerve pass out?
Internal auditory meatus
What does the motor branch of the facial nerve pass through?
- Internal acoustic meatus
- stylomastoid foramen
What are the motor divisions and branches of the facial nerve?
- Temporofacial division
- -Temporal branch
- -Zygomatic branch
- Cervicofacial division
- -Buccal branch
- -Marginal mandibular branch
- -Cervical branch
What are the layers of the SCALP?
- Skin (hair follicles, sebaceous and sweat glands)
- Connective tissue (blood vessels and nerves)
- Aponeurotic (unites frontalis and occiptalis muscles)
- Loose connective tissue (subaponeurotic space can spread infection to intracranial sinuses)
- Pericranium (periosteum of skull)
Frontal belly of occipitofrontalis
- Protracts scalp / raise eyebrows
- Temporal branch of Facial nerve
Occipital belly of occipitofrontalis
- retracts scalp / assists in raising eyebrows
- posterior auricular nerve of CNVII
- draws eyebrows down and medial
- temporal branch CN VII
- wrinkles skin between eyebrows
- Buccal branch CN VII
- Transverse part - compresses nostrils
- Alar part - dilates nostrils
- closes or purses lips
- Buccal and marginal mandibular branch of CN VII
What muscles elevate the lip and what is their innervation?
- Levator Labii superioris (also dilates nares)
- Levator Labii superioris alaeque nasi (also elevates ala of nose)
- Zygomaticus minor
- Zygomaticus major (up and back)
- All innervated by buccal branch CN VII
Risorius m (joker muscle)
- Retracts angle of mouth
- Buccal branch
Depressor labii inferioris
- depresses lower lip
- marginal mandibular branch
Depressor anguli oris
- depresses angle of mouth
- marginal mandibular branch
- Elevates and protrudes lower lip
- marginal mandibular b.
- compresses cheek
- Buccal branch
- depresses mandible and angle of mouth
- Cervical branch of Facial nerve
What would you like to do?
Home > Flashcards > Print Preview