TMJ and Blood Supply Flashcards
T/F: spasms in either the SCM and trapezius muscles can refer pain to the TMJ
true
T/F: The left common carotid artery branches directly off the aortic arch
true
T/F: The right subclavian artery branches directly off the aortic arch
false; left subclavian
T/F: Bruxism is a process of the CNS rather than mastication process
true
T/F: Clenching is caused by malocclusion
false; compression
T/F: Most TMJ symptoms come from the joint disc
false
T/F: Joint sounds are not reliable indicators of TMD since they can change over time in a patient
true
T/F: The normal condition is for the teeth to be slightly parted at rest and the muscles relaxed
true
T/F: The power stroke involves a movement from a laterally deviated position back to the midline
true
T/F: The rotational movement of the TMJ occurs mainly between the disc and the condyle of the mandibular in the upper synovial cavity
false
T/F: The pterygoid plexus of veins may be involved in the spread of infection to the cavernous venous sinus
true
T/F: The venous sinuses are located in the meninges of the brain
true
T/F: Elevation and retraction of the mandible involves both gliding in both upper synovial cavities and rotation in both the lower synovial cavities
true
T/F: The external carotid artery has no branches in the neck
False
T/F: The gliding movement of the TMJ occurs mainly between the disc and the articular eminence of the mandible in the upper synovial cavity
false
T/F: The posterior area of attachment of the disc to the capsule is one of the places where nerves and blood vessels enter the joint
true
T/F: Veins are generally larger and more numerous than arteries in the same tissue area
true
T/F: The internal jugular originates in the cranial cavity
true
T/F: The rotational movement of the TMJ occurs mainly between the disc and the condyle of the mandibular in the synovial cavity.
true
All of the following run in the carotid sheath except
hypoglossus
The external jugular terminates into the
subclavian vein
The brachiocephalic vein unite to form the
superior vena cava
Another name for a heart attack is
myocardial infarction
Most of the tissues of the head and neck is drained by the
internal jugular v.
Tissue destruction is termed
gangrene
Another name for stroke is
cerebrovascular accident
The lateral scalp area is drained by the _____ into the _____
superficial temporal and posterior auricular vein
retromandibular and external jugular vein
The mandibular teeth and submental region is drained by the _____ into the _____
inferior alveolar vein
pterygoid plexus of veins
Blood drains from the pterygoid plexus into the
maxillary v.
The pterygoid plexus protects the
maxillary a.
The cavernous venous sinus is located on each side of the body of the
sphenoid bone
Landmark located on the mandible
coronoid process
Protrusions of the mandible primarily involves
bringing jaw forward
Structure secretes synovial fluid
inner membrane lining of capsule
Which of the following about the TMJ is false
gliding movements
Artery that anastomoses with the anterior superior alveolar artery
posterior superior alveolar artery
A venous sinus of the vascular system is a
blood filled space between 2 layers of tissue
Blood vessel lesion may result when a clot on inner blood vessel wall becomes dislodged and travels in the vessel
embolus
Vein results from merger of superficial temporal vein and the maxillary vein
retromandibular vein
Vein that drains the tissue of the orbit
ophthalmic
Lower lip area drained by _____ into ______
inferior labial vein
facial vein
Artery and foramen pair matched correctly
middle meningeal and foramen spinosum
Structures are similar vessels that branch off an arteriole to supply blood directly to the tissue
capillary
Ligament that is vestige of Meckel’s cartilage
sphenomandibular ligament
Ligament that forms reinforcement of the capsule of the TMJ
temporomandibular ligament
Ligament that is landmark for administration of a local anesthetic for inferior alveolar block
sphenomandibular ligament
Depression and protrusion occurs
speech and mastication
Suprahyoids would be involved in
depression and protrusion of mandible
Ligament that runs from styloid process of temporal bone to the angle of the mandible
stylomandibular ligament
Bilateral contraction of posterior portion of temporalis would cause
retraction of mandible
Gliding in one upper synovial cavity and rotation in the opposite upper synovial cavity will cause
lateral deviation
Bilateral contraction of lateral pterygoids will cause
protrusion of mandible
Muscles involved in elevation and retraction of mandible except
lateral pterygoid
Habitual grinding of teeth is termed
bruxism
TMJ can be palpated just anterior to the
external acoustic meatus of each ear
Prolonged holding of teeth together by masticatory muscles is termed
clenching
Muscles, when fully contracted, helps close the jaw
temporalis
Dislocation of both TMJ joints defines
subluxation
Left lateral excursion of mandible is accomplished by
contraction of right; relaxation of left
Patients jaw deviates to left when protruding mandible. Which muscle unable to contract
left lateral pterygoid
Terminal branches of external carotid artery are
superficial temporal a. and maxillary a.
Branches of facial artery except
supraorbital a.
Not a branch of external carotid
vertebral a.
Lingual artery arises from what artery
external carotid a.
Supplies blood to TMJ
superficial temporal and maxillary branches
Blood supply to maxillary molar teeth is through what artery
posterior superior alveolar a.
Extensive bleeding from a fractured neck of the mandible with medial displacement would most likely be due to rupture of which branch of maxillary artery
inferior alveolar a.
Major artery that extends through pterygopalatine fossa
maxillary a.
Artery that courses through optic foramen and supplies orbit and its content including eyeball
ophthalmic a.
Artery transverses the zygomatic bone
transverse facial artery
First branch of external carotid artery
superior thyroid a.
Provides most reliable arterial pulse of body
common carotid a.
Disc of TMJ attached laterally and medially to the
poles of condyle
Helps stabilize TMJ but not part of TMJ
sphenomandibular ligament
The _____ division of the trigeminal nerve innervates the TMJ
V3
The posterior collagenous lamina functions to
keep disc being pulled too far back
The temporomandibular ligament is found in the
lateral part of the capsule
Pain in area of TMJ coming from other areas is known as _____ pain
referred
When disc of TMJ deranged, it is usually
displaced anteriorly
Posterior elastic lamina functions to
pulls discs backward
Arteries supplies blood to oral cavity
lingual artery
maxillary artery
palatal artery
mental artery
Artery that supplies all of maxillary posterior teeth
posterior superior a.
Artery supplies all of tongue
lingual a.
Branches of internal carotid artery
none
Blood supply to muscles of mastication from _____ artery
maxillary
Vein that may be injured in anesthesia of the posterior superior alveolar nerve
pterygoid plexus
If the posterior Retromandibular vein is absent on one side, what is true
external jugular v. smaller; internal jugular v. larger
If PSA artery were blocked, how would blood get to maxillary molars?
anterior superior alveolar a.
Landmark of TMJ on mandible
coronoid process
Structure that maxillary artery does not supply
covering of brain
Muscle can become enlarged with parafunctional habit of Bruxism
masseter muscle
Blood vessel that could most likely be pierced doing PSA nerve block
pterygoid plexus
Teeth may cause sensations suggesting carious lesion or endodontic situation when only sinus infection diagnosed
maxillary posterior
Stenosis of bicuspid valve is likely to initially cause a backup of blood in the
left atrium
pulmonary veins
lungs
Floor of mouth and tongue receive blood supply by way of
lingual artery
Type of blood vessels carries blood to tissues
arteries
Arteries that carry deoxygenated blood
pulmonary arteries
Systolic pressure represents
ventricular contraction
Common artery used for determining pulse rate in conscious adult
radial
Mitral valve separates
left atrium and left ventricle
Nasopalaitine nerve enters oral cavity by way of
incisive foramen
Arterial pulse indicates
number of times heart contracts
Diastolic BP is pressure exerted by blood on walls of
arteries when heart is at rest
First of the three arteries that arise from aortic arch
brachiocephalic a.
Muscle contracts in order to cause jaw to protrude
lateral pterygoid muscle
Artery that does not originate from external carotid artery
ophthalmic a.
Vertebral arteries pass upward through transverse foramina and enter skull through foramen magnum. Inside skull the two vertebral arteries join to form one artery, the
basilar a.
Ophthalmic artery is branch of _____ carotid artery
internal
Vein arises from dorsal abdomen wall and passes upward through aortic hiatus of diaphragm , and then terminates by emptying into superior vena cava just above heart
azygos vein
Sequence of blood flow through heart to lungs, its return to heart and out of the heart to systemic circulation
superior & inferior vena cava–>right atrium…C
Valves that prevents back flow of deoxygenated blood
pulmonary and right atrioventricular valves
Oxygenated blood flows through which structure
coronary arteries
Maxillary artery is branch of
external carotid
Basilar artery is anterior and inferior to the
Pons
Buccal gingiva of mandibular molars is supplied by
buccal a.
Direct branch off of aorta except
right common carotid a.
Route of blood supply to the right side of face
E. left ventricle–>aorta–>brachiocephalic a.–>common carotid a.–>external carotid a.–>facial a.
Order of blood flow
D. vena cava–>right atrium–>tricuspid valve–>right ventricle–>pulmonary valve–>lungs–>left atrium–>mitral valve–>left ventricle–>aortic valve–>aorta
Maxillary anterior teeth supplied by
anterior superior alveolar a.
End of maxillary artery is the
sphenopalatine
Maxillary posterior teeth, maxillary sinus, and posterior buccal mucosa of upper posterior teeth is supplied by
posterior superior alveolar a.
Soft palate supplied by
lesser palatine a.
Artery runs laterally through coronoid notch of ramus
masseteric a.
Buccal gingiva and mucosa from premolars to incisors and mucosa of lower lip supplied by
mental a.
Mental artery direct branch from
inferior alveolar a.
Components of pterygopalatine fossa branches of maxillary artery except
buccal
Components of infratemporal fossa branches of maxillary artery except
posterior alveolar
Artery is terminal branch of external carotied artery
maxillary a.
Ventral surface of tongue and floor of mouth supplied by
sublingual a.
Deep posterior part of tongue supplied by
dorsal lingual a.
Artery branches off external carotied below facial artery
lingual a.
External jugular veins empty into
subclavian v.
Anterior Retromandibular vein joins facial vein and forms the
common facial v.
Posterior Retromandibular vein joins the posterior auricular vein and forms the
external jugular v.
The ____ vein is formed by an intertwining network of veins know as pterygoid plexus of veins
maxillary
Artery ascends the side of neck, runs deep to submandibular gland, crosses lower borer of mandible just in fron of angle of mandible
facial a.
Artery emerges through incisive foramen
nasopalatine a.
Statement concerning pterygoid plexus correct
injury can lead to hemotoma
Superficial temporal v. and maxillary v. join to form the
retromandibular v.
Middle meningeal a. enters skull through
foramen spinosum
PSA artery branches from the
maxillary a.
IA artery branches from the
maxillary a.
Deep lingual a. branches from the
lingual a.
What fossa does maxillary a. branch to supply all muscles of mastication
infratemporal fossa
Angular a. branches from
facial a.
Formina for PSA is on what bony structure
maxillary tuberosity
Deep lingual a. supplies
apex of tongue
