Flashcards in Anatomy 1 and 2 - Taste, Chewing, Swallowing and Abdo Pain Deck (100)
Parts of the GI tract (11)
Oral cavityPharynxoesophagusstomachsmall intestinelarge intestine (including rectum and anal canal)accessory organs (tongue, salivary glands, pancreas, liver, and gallbladder)
What joint is involved in opening the mouth
The temperomandibular joint (TMJ)
3 pairs of jaws "closing" muscles names?
Where does the masseter stretch?
From angle of mandible to zygomatic arch
Where does the temporalis run?
From coronoid process of mandible to temporal fossa
Where does the Medial Pterygoid run?
From angle of mandible (medial side) to pterygoid plates of sphenoid bone
What is the 1 pair of jaw opening muscle and where does it run
lateral pterygoid Condyle of mandible to pterygoid plates of sphenoid bone
What supplies all the jaw muscles
Mandibular division of trigeminal nerve - CN V3
What cranial nerve number is the trigeminal nerve and what division is the mandibular division?
CN 53rd division
CN V3 course:CNS partIntracranial partBase of skull foramen partExtra-cranial part of course
PonsInferior to the edge of the tentorium cerebelli between the posterior and middle cranial fossaforamen oval of sphenoid boneFrom foramen oval towards structures they supply
What part of the mouth is particularly sensitive to touch
the posterior wall of the oropharynx
What is aspiration?
Inhalation of liquid or solid matter into the lungs (different from choking)
What are the arches of the soft palate made from?
Skeletal muscle covered in mucosa
Surface anatomy of the mouth (8)
Hard palateSoft palate (made up of arches)Upper dental archLower dental archPalatine tonsilstongueuvulagingivae
What 2 parts can the tongue be divided into and how much of each tongue is classed as what
Anterior 2/3rds (horizontal and in oral cavity)Posterior 1/3rd (vertical and not in oral cavity)
What supplies the:general sensory parts of the tongue?Special sensory areas of the tonguegeneral and sensory supply of posterior 3rd of tongue
CN V3 (3rd division of trigeminal nerve)CN VII (facial nerve)CN IX (glossopharyngeal)
What gives general sensation to the gingiva of oral cavity and palate (superior half)
What gives general sensation to the gingiva of oral cavity and floor of mouth (inferior half)
What is the gag reflex
A protective reflex that prevents foreign bodies from entering the pharynx or larynx
Sensory part of gag reflex
Motor part of gag reflex
CNIX and CNX
What CN's does spraying a local anaesthetic block the sensory action potentials of
CN V2, CN V3, CN VII and CN IX
What does the gag reflex cause that helps close off the entry to the body
Constrict the pharynx
CN V2 course:CNS partIntracranial partBase of skull foramen partExtra-cranial part of course
PonsInferior to the edge of the tentorium cerebella between the posterior and middle cranial fossaeFormane rotundum in sphenoid boneFrom foramen rotunda towards structures they supply
CN VII course (special sensory, sensory, motor and parasympathetic):CNS partIntracranial partBase of skull foramen partExtra-cranial part of course
junction between the pons and medulla Directly into internal acoustic meatus in the posterior cranial fossaPasses through the temporal bone through the internal acoustic meatus and stylomastoid foramenmost fibres pass through he stylomastoid foramen
What branch of CN VII connects to the lingual nerve branch of CN V3?
The chorda tympani
What does the chorda tympani contain?
Taste axons for the anterior 2/3rds of the tongueParasypathetic axons for salivary glands
where does the chorda tympani branch off of CN VII
At the stylomastoid foramen
CN IX course (special sensory, sensory, motor, visceral afferent and parasympathetic):CNS partIntracranial partBase of skull foramen partExtra-cranial part of course
MedullaDirectly towards jugular foramen in the posterior cranial fossa Jugular foramen at the junction between the temporal bone and occipital bone Axons mainly pass to or from the tongue and palateposterior wall of oropharynxparasympathetic secretomotor to parotid salivary glands