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Oral Anatomy

The facial muscle contraction is monitored by receptors in	Tendons (golgi tendon organs); Muscles (muscle spindles); Other receptors( skin, joint)
The fibers that are capable of rapid contraction and high tension but fatigue rapidly is the	Type I or phasic fibers. The type II or tonic functioning fibers handle lower contraction tension and is resistant to fatigue.
The lateral pterygoid muscles function to stabilize the tempromandibular joint and is made predominantly of	Type II or Tonic fibers
The path of opening and closing of the condyle without involving the translation of condyle is the	Centric relation
In natural dentition	Centric occlusion is anterior to centric relation by 1 millimeters
The centric relation is	Tooth determined position. The condyle in the articular fossa determines the centric relation
Basic movements of condyle include(s)	Hinge movement; Gliding movement; Translation
In lateral excursion of mandible, the condyle appears to rotate with a slight lateral shift referred as	Bennett movement
The maximum lateral shift is	10-12 millimeters. Protrusive movement is 8 to 11 millimeters and retrusive movement is 1 millimeter.
The superior head of lateral pterygoid muscle functions to	Close jaw. The inferior head functions to open jaw

Oral Anatomy

The major arterial supply to the jaw is via the	Internal maxillary artery. The internal maxillary artery is a branch of external carotid artery
The internal alveolar artery branches from internal maxillary artery just	Medial to ramus of mandible
The gasserian ganglion is at the	Petrous part of temporal bone
The parasympathetic ganglion associated with maxillary nerve is the	Pterygopalatine ganglion
The mylohyoid nerve branch is associated with	Sphenomandibular ligament
The middle and anterior palatine branch of maxillary nerve enters the palate through the	Minor palatine foramen. The posterior palatine branches pass through the major palatine foramen.
The long axes of the condyloid process if prolonged would meet at a point anterior to foramen magnum at an angle of	135 degrees
The tempromandibular ligament is the external portion of the	Capsular ligament
The accessory fibers of the stylomandibular ligament is the	Stylomandibular ligament
The suspensory ligaments of the tempromandibular joint are the	Tempromandibular and sphenomandibular ligaments

Oral Anatomy

The maxillary nerve leaves the cranium through the	Foramen rotandum
Mandibular nerve passes through	Foramen ovale
Facial nerve leaves cranium through	Stylomastoid foramen
The ganglion associated with maxillary nerve is the	Sphenopalatine ganglion
The ganglion associated with ophthalmic nerve is	Ciliary ganglion
The ganglion associated with mandibular nerve is	Submandibular ganglion and Otic ganglion
The nasociliary nerve comes out through the	Superior orbital fissure
The sensory root and motor root of mandibular nerve unite	After leaving foramen ovale
The motor roots of mandibular division of the fifth cranial nerve are derived from the motor cells located at the	Medulla oblongata
The greater petrosal nerve is associated with	Sphenopalatine ganglion

Oral Anatomy

The sensory root of the fifth cranial nerve enter the brain stem through the	Pons
The semilunar ganaglion is located in the	Meckel’s cavity
The sensory root of the fifth cranial nerve is made up of	Unipolar neurons
The ascending fibers of the central branches of the sensory root of the fifth cranial nerve terminate in	Upper sensory nucleus
The ascending fibers of the central branches of the sensory root of the fifth cranial nerve convey	Tactile discrimination; Passive movement; Sense of position
The main nucleus of the fifth cranial nerve is with the	Dorsal trigeminothalamic tract
The bulbospinal nucleus is _______ and associated with __________________.	Ventral trigeminothalamic tract and pain, temperature
The mesencephalic nucleus convey the impulses from	Tempromandibular joint, palate, Periodontal membrane and teeth, Stretch receptor from muscle fibers. The nucleus conveys and interprets the proprioceptive impulses from all these areas.
The smallest division of trigeminal nerve is the	Ophthalmic nerve
The ophthalmic nerve leaves the cranium through the	Superior orbital fissure

Oral Anatomy

The anterior facial vein is connected to cavernous sinus through	Superior ophthalmic vein; Deep facial vein; Pterygoid plexus of vein
The upper pole of the parotid gland is pierced by the	Auriculotemporal nerve; Superficial temporal vessels; Temporal branch of facial nerve
Lower pole of parotid gland overlaps the	Posterior belly of digastric
The insertion of the medial pterygoid muscle is into the	Medial surface of mandibular ramus
The parotid duct pierces the buccinator muscle and opens into the oral vestibule usually opposite the	Maxillary first-second molar
The piriform recess is located	On either side of the larynx within the laryngopharynx
The recess above the palatine tonsil is	plica semilunaris
The  recess posterior to the salpingopharyugeal folds within the nasopharynx is	pharyngeal recess
Recess between glossoepiglottic fold is	Vallecula
The sensory root of the fifth cranial nerve arise from the	Semilunar ganglion

Oral Anatomy/ Tooth Morphology

The mental foramen opens on the exterior surface of mandible below the	Mandibular second premolar
The origin of mylohyoid muscle is the	Internal oblique ridge
The fossa above the mylohyoid line is the	Sublingual fossa. The sublingual fossa houses the sublingual salivary glands while the fossa below the mylohyoid line is the digastric fossa and the submaxillary fossa.
Lingula gives attachment to the	Sphenomandibular ligament
All the muscles of facial expression lie	In superficial facial plane
The muscle of facial expression arises from	Mesoderm of second pharyngeal arch
Varying expressions produced on face are side-effects of	Contraction of many facial muscles
Whistling muscle is the	Buccinator
The parotid duct before opening in to oral cavity pierces the	Buccinator
Circular fibers of lip include	Levator anguli oris; Depressor anguli oris; Buccinator

Oral Anatomy

The horizontal ledge extending medially from the nasal surface of the maxilla is the	Palaltine process
Foramina of Stenson carries	Nasopalatine nerves
Foramina of Scarpi  carries	Descending septal artery
The facial plate of maxillary alveolar process is	Thin. But the buccal plates of second and third molars are thick
The maxillary alveolus that is kidney shaped with the hilus part in its mesial surface is the	First premolar. In the second premolar, the hilus is in distal surface. The reason for the kidney shaped is due to the developmental grooves in the teeth and subsequently occupied by the alveolar bone.
Medially maxilla articulates with	Inferior turbinate; Vomer; Opposite maxilla
In the lower border of mandible, proximal to symphysis are two prominences called	Mental tubercles
The triangular surface formed by the symphysis and mental tubercles is the	Mental protrubence
The condylar and coronoid process is separated by the	Sigmoid notch
The concave pit medially below the neck of condyle is the	Pterygoid fossa

Tooth Morphology/Oral Anatomy

The pulp in pulp chamber as compared to the pulp in pulp canal is more	Cellular
The odontoblast in the mature adult coronal pulp are	Cuboidal
The projection of pulp in roof of pulp chamber is the	Pulp horn
The largest labiolingual root dimensions is observed with	Permanent mandibular canine
The maxilla contains	4 processes; 4 surfaces. The processes of maxilla are zygomatic, frontal, palatine and alveolar processes and surfaces are facial, infratemporal, orbital and nasal surfaces.
The facial and orbital surface of maxilla are separated by	Infra orbital ridge
Of the three canals of the permanent maxillary first molar, a curved canal is often the	Mesiobuccal
Canine fossa is directly above the	Roots of upper premolar
The shape of the infratemporal surface is approximately	Convex
The thin medial edge of orbital surface of maxilla is notched anteriorly to from	Lacrimal groove

Tooth Morphology

A kidney shaped alveolus that is wider faciolingually than mesiodistally is in	Permanent mandibular first premolar
Maximum rotation and translation of both condyles takes place during	Hinge movement
The movement that cannot be seen in horizontal plane diagram of jaw movements is the	Vertical movement
The presence of horizontal overlap in molars prevents the	Cheek biting
The major supporting cusp in the permanent maxillary first molar is the	Mesiopalatal. The other supporting cusps of dentition are the lingual cusps of maxillary posterior teeth and buccal cusps of mandibular posterior teeth.
In the permanent mandibular first molar, the central stop is provided by the	Central fossa
The oblique ridge in the occlusal surface of the permanent mandibular first molar fits in to the concave sulcus formed by the junction of the	Distobuccal groove; Central groove; Lingual groove
The outline form of pulp chamber corresponds to the	Shape of crown. The pulp canal corresponds to the root shape
Radiograph of the teeth does not reveal features of the	Mesial & distal aspect
The root canal of the posterior teeth near the apex breaks in to multiple tiny canals system called as	The delta system. Each of such extra canals is called as an accessory canal and when in middle third it is called as lateral canals.