Anatomy Final 28&30
Sensation to the maxillary labial gingiva is supplies by the nasopafine nerve bc this nerve branches off the infraorbital as it travels to supply to the maxillary anterior terth
Both are false
The facial nerve innervates muscles of facial expression & mastication. The facial nerve is the 5th cranial nerve.
Both are false
The orbicularis oris and orbicularis oculi circle the oral cavity. Muscles of the orbicularis oculi circle the lips like a purse strimg
Both are false
The palatine glands are responsible for taste perception because they contain special taste enhancing cells
Both are false
The pharynx has 4 components. The laryngeal pharynx is a middle component of the pharynx.
Both are false
Hyoid muscles have a role in depressing the mandible. This includes the suprahyoid and the thyrohyoid muscles.
Both are true
Labial glands are primarily located on the labial gingiva. These purely serous glands provide watery lubrication for all labial areas
Both false
Minor salivary glands produce enough saliva to mix with food. They are smaller than the major glands but have longer ducts
Both false
Muscles grouped around the mouth do not influence tooth alignment bc abnormal pressures from one group are balanced by other groups
Both false I
Muscles of mastication are innervated by the 5th cranial nerve bc they develop from the 1st pharyngeal arch
Both statements are correct & related
Which muscle plays a role in mastication
Buccinator
Motor supply to the tensor veli palatini comes from the trigeminal nerve
True
Contraction of only the posterior portion of the temporalis muscle retired the mandible bc this action also depresses the mandible.
Correct: false
Which muscle of mastication does not have two origins
Temporal
Which muscles of mastication fans out widely at its origin
Temporal
Hyoid muscles located above the hyoid bone are called suprahyoid muscles. when contracted, most muscles of this group elevate the mandible.
True, False
The common cartoon artery divides into the external and internal arteries. The division occurs at the hyoid bone
True: false
The larynx moves up and down during swallowing. The thyrohyoid muscle pulls the larynx down
True: false
The parasympathetic nervous system controls salivary secretions. It also controls blood flow to the salivary glands.
True: false
The sublingual gland can appear larger than normal in an endentulous patient because loss of the mandibulae ridge of bone makes this gland appear to bulge
True; false
The sternocleiodomastoid muscle has an origin at the superior border of the scapula. When muscle contracts it pulls the hyoid bone down.
false, true
masseter muscle is probably the most powerful muscle of the suprahyoid group. when it contracts, it elevates the mandible which closes mouth.
false, true
Contraction of only the posterior portion of the temporalis muscle retrudes the mandible bc this action also depresses the mandible
correct but reason is not
the orbicularis oris is probably the most important muscle of the mouth bc in addition to its role in forming facial expressions, aka an accessory muscle of mastication
neither the statement nor the reason is correct
Vertical fold of tissue in front of and behind each palatine tonsil is
All of the abobe
the lateral pterygoid performs each of the following actions upon the mandible EXCEPT
retrusion
If the left lateral pterygoid contracts, the mandible will move to the left because one of the lateral pterygoid muscles acting by itself accomplishes lateral excursion
statement is not correct, reason is
If the left pterygoid contracts, the mandible will move to the left bc one of the lateral pterygoid muscles acting by itself accomplishes lateral excursion
statement is not correct, reason is
Which muscle opens and closes nostrils
Nasalis
Maxillary premolars are drained by sub mental nodes
False
Spasms origination from the TMJ can be referred to sternocleidomastoid muscle
False
The risorius muscle pulls the corners of the mouth down as a frown
False
The suprahyoid and thyrohyoid muscles control laryngeal movements
False
The suprahyoid muscles are innervates by cranial neeves
False
All muscles of mastication insert into the disk of the TMJ. Blood supply to these muscles comes from the maxillary artery, which is a branch of the cartoid
False, true
The mentalis muscle fibers originate in the mental foremen. These fiber terminate by inserting into the skin of chin
False, true
The temporal muscle has a very narrow origin. Contraction of entire temporalis elevated the mandible
False, true
the mylohyoid muscle originates from the mylohyoid line on the medial surface of each side of the maxilla. The left & right muscles fuse into what is known as a raphe
False, true
During an extra oral exam it is necessary to palpate beneath the sternothyroid muscle bc enlarged lymph nodes may be there
False: true
Muscles of the oral pharynx seal off the nasal cavity from the oral cavity. This action also narrows the space between the two palatine tonsils
False: true
The dilator naris raises the nostrils. This muscle causes the nostrils to flare
False: true
The hyoid bone, a portion of the zygomatic arch, is unusual bc it articulates with no bone
False: true
The sternocleidomastoid has an origin at the superior border of the scapula. When muscle contracts it pulls the hyoid bone down
False: true
The mandible is elevated by each of the following except one
Geniohyoid
Which muscle originates from the lower rim of the orbit
Levator labii superioris
The floor of the mouth is formed by which muscle
Mylohyoid
A fascial infection of the sub mental space would spread where
Parapharyngeal
The facial nerve innervates each except
Soft palate
The orbicularis oculi raises the eyelid bc fibers of this muscle attach to the medial and lateral borders of the orbit
Statement is not correct, reason is
The orbicularis oculi raises the eyelids bc fibers of this muscle attach to the medial & lateral borders of the orbit
Statement is not correct, reason is correct
Each of the following is a muscle of the suprahyoid group except one
Thyrohyoid
the action of the orbicularis oris is to close and compress the lips
true
the insertion of a muscle is attached to the more movable structure
true
