Flashcards in Anatomy 1 (Lectures 1 and 2) Deck (100)
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1
Parts of the GI tract (11)
Oral cavity
Pharynx
oesophagus
stomach
small intestine
large intestine (including rectum and anal canal)
accessory organs (tongue, salivary glands, pancreas, liver, and gallbladder)
2
What joint is involved in opening the mouth
The temperomandibular joint (TMJ)
3
3 pairs of jaws "closing" muscles names?
Masseter
Temporalis
Medial pterygoid
4
Where does the masseter stretch?
From angle of mandible to zygomatic arch
5
Where does the temporalis run?
From coronoid process of mandible to temporal fossa
6
Where does the Medial Pterygoid run?
From angle of mandible (medial side) to pterygoid plates of sphenoid bone
7
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
8
What supplies all the jaw muscles
Mandibular division of trigeminal nerve - CN V3
9
What cranial nerve number is the trigeminal nerve and what division is the mandibular division?
CN 5
3rd division
10
CN V3 course:
CNS part
Intracranial part
Base of skull foramen part
Extra-cranial part of course
Pons
Inferior to the edge of the tentorium cerebelli between the posterior and middle cranial fossa
foramen oval of sphenoid bone
From foramen oval towards structures they supply
11
What part of the mouth is particularly sensitive to touch
the posterior wall of the oropharynx
12
What is aspiration?
Inhalation of liquid or solid matter into the lungs (different from choking)
13
What are the arches of the soft palate made from?
Skeletal muscle covered in mucosa
14
Surface anatomy of the mouth (8)
Hard palate
Soft palate (made up of arches)
Upper dental arch
Lower dental arch
Palatine tonsils
tongue
uvula
gingivae
15
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)
16
What supplies the:
general sensory parts of the tongue?
Special sensory areas of the tongue
general and sensory supply of posterior 3rd of tongue
CN V3 (3rd division of trigeminal nerve)
CN VII (facial nerve)
CN IX (glossopharyngeal)
17
What gives general sensation to the gingiva of oral cavity and palate (superior half)
CN V2
18
What gives general sensation to the gingiva of oral cavity and floor of mouth (inferior half)
CN V3
19
What is the gag reflex
A protective reflex that prevents foreign bodies from entering the pharynx or larynx
20
Sensory part of gag reflex
CN IX
21
Motor part of gag reflex
CNIX and CNX
22
What CN's does spraying a local anaesthetic block the sensory action potentials of
CN V2, CN V3, CN VII and CN IX
23
What does the gag reflex cause that helps close off the entry to the body
Constrict the pharynx
24
CN V2 course:
CNS part
Intracranial part
Base of skull foramen part
Extra-cranial part of course
Pons
Inferior to the edge of the tentorium cerebella between the posterior and middle cranial fossae
Formane rotundum in sphenoid bone
From foramen rotunda towards structures they supply
25
CN VII course (special sensory, sensory, motor and parasympathetic):
CNS part
Intracranial part
Base of skull foramen part
Extra-cranial part of course
junction between the pons and medulla
Directly into internal acoustic meatus in the posterior cranial fossa
Passes through the temporal bone through the internal acoustic meatus and stylomastoid foramen
most fibres pass through he stylomastoid foramen
26
What branch of CN VII connects to the lingual nerve branch of CN V3?
The chorda tympani
27
What does the chorda tympani contain?
Taste axons for the anterior 2/3rds of the tongue
Parasypathetic axons for salivary glands
28
where does the chorda tympani branch off of CN VII
At the stylomastoid foramen
29
CN IX course (special sensory, sensory, motor, visceral afferent and parasympathetic):
CNS part
Intracranial part
Base of skull foramen part
Extra-cranial part of course
Medulla
Directly 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 palate
posterior wall of oropharynx
parasympathetic secretomotor to parotid salivary glands
30
