Anatomy Flashcards
where is the coronoid process found?
on the mandible - connects to muscles for mastication.
what nerves comes out through the mandibular foramen?
inferior alveolar nerve
why is the mylohyoid line important?
in swallowing and where the bone resorbs to when teeth are lost.
what nerves comes out through the mental foramen?
mental nerve
where is the mandibular foramen located?
on the inside of the mandible .
where is the mental foramen located?
on the mandible outside on the body.
what are the names of the dental arches that bind the oral cavity?
palatoglossal arch
palatopharyngeal arch
what happens if the maxilla bones do not fuse during development?
cleft palate / cleft lip.
what is the free floating bone in the neck called?
hyoid bone.
what muscles are supplied by the facial nerve?
- levator labii
- zygomaticus muscles
- oribicularis oris
- depressor anguli oris
- buccinator
where is the levator labii found and what does it do?
- from the eyes down to the mouth.
- bends the lip up.
where are the zygomaticus muscles found and what does it do?
- on the zygomatic arch towards the mouth.
- they move the corners of the lip up.
where is the oribicularis oris found and what does it do?
- around the mouth (in a circle)
- enables you to pout.
where is the depressor anguli oris found and what does it do?
- outer edge of the mouth down to the bottom of the mandible
- moves the lips downwards
where is the buccinator found and what does it do?
- on the cheek.
- moves thew edges of the lips together - allowing for a sucking motion.
what nerve supplies the muscles of facial expression?
facial nerve
where is the modiolus located?
on the sides of the lips, it is where all the muscle around the mouth join.
what are the branches of the facial nerve?
- temporal
- zygomatic
- buccal
- mandibular
- cervical
what causes bells paulsy?
swelling of the facial never on one side of the face in the boney cannel causing paralysation on the muscles of facial expression.
what are the 3 divisions of the trigeminal nerve?
- V1 : opthalmic nerve
- V2 : maxillary nerve
- V3: mandibular division
what branch of what cranial nerve supplies the muscles of mastication?
mandibular branch of the trigeminal nerve.
what are the muscles of mastication?
- temporallis
- massetor
- medial pterygoid
- lateral pterygoid.
where is the articulator disc found?
- between the TMJ and condylar process
where does the temporallis attach?
temporal bone and coronoid process.
where does the massetor attach?
zygomatic bone and the ramus of the mandible.
where does the medial pterygoid attach?
- lateral pterygoid plate of speroid
- maxilla
- mandible (inner surface of ramus)
where does the lateral pterygoid attach?
Upper head: - sphenoid - TMJ articular disc Lower head: lateral ptergoid plate -condylor process
where does the digastic attach to?
mastoid process to the hyoid bone to the mandible.
what action does the lateral pterygoid preform?
lower head:
-pulls mandible anteriorly as mouth opens.
Lower head:
- contols position of articular disc as mouth closes.
what action does the medial pterygoid preform?
elevates mandible
what action does the temporallis preform?
closing mouth - elevates mandible.
- retracts mandible
what action does the massetor preform?
- elevates mandible (biting)
- contacts - closing mouth
what action does the digastic preform?
assists in opening mouth
what are the 3 salivary glands called?
- parotid
- submadibular
- sublingual
where does the glossopharyngeal nerve supply?
tongue.
what is a ganglion?
swelling on a nerve, found wherever you get a collection of nerves.
what are the 2 types of ganglion?
- sensory
- autonomic
whats the difference between the 2 types of ganglion?
autonomic can sent automic secretomotor info from the CNS to the periphery.
and also transmit central nerve messages into the ganglion and send them to the CNS.
whats the path way from the brain to the parotid glands?
- glossopharageal nerve
- via middle ear cavity
- then as lesser petrosal nerve
- to otic ganglion
- synapse
- post ganglionic fibres pass to gland in auriculotemporal nerve
whats the path way from the brain to the submandibular glands?
- facial nerve
- via chorda tympani
- and lingual nerve
- to submandibular gangion
- synapse
- post-ganglionic fibres pass to the submandibular gland directly
whats the path way from the brain to the sublingual glands?
- facial nerve
- via chorda tympani
- and lingual nerve
- to submandibular gangion
- synapse
- post-ganglionic fibres pass to the lingual nerve to the sublingual glands.
what artery supplies most of the blood to the head and neck?
carotid