Anatomy Flashcards
Muscles move toward the ——when contracted
Origin
Muscles with 2 or more names, the first part indicates —- and the second part indicates —–
Origin
Insertion
Sternocleidomastoid (XI)
tilts and rotates head and neck, flexing of the neck, stabilize neck
Trapezius (XI)
lifts and rotates the shoulders, dorsal flexion of the head, twist head
Orbicularis oris
closing or pursing lips
Buccinator
flattens cheek, assists in chewing, assist the muscles of mastication
A masseter can become enlarged in patients who habitually clench or grind.
T/F
True
What is most likely affected by direct trauma to the TMJ?
Lateral pterygoid
All muscles of mastication are innervated by the ?
Mandibular division of the fifth cranial or trigeminal nerve (V3) and blood supply of the maxillary artery
Insertion of the mylohyoid is the?
Hyoid bone
What are the 2 groups of the hyoid muscle?
supra hyoid and infrahyoid
What bone does not articulate with any other bone?
hyoid
What makes up the floor of the mouth?
Mylohyoid
What stabilizes the hyoid bone? Helps with swallowing and speech?
Infrahyoid
What is referred to as raphe?
pterygomandibular
Where does the Wharton’s or submandibular ducts occur?
lingual frenum
Is the lingual nerve (V3) and chorda tympani (sensory)
Anterior 2/3
Posterior 1/2 is
IX glossopharyngeal
What contains taste buds and associated with ducts of von Ebner glands?
Circumvallate
Most numerous of the tongue but do not contain taste buds?
filiform
What is a keratinized tissue that gives the tongue its velvety texture, it is associated with geographic tongue and hairy tongue?
filiform
Separation of 1/3 posterior and 2/3 anterior portions of the tongue with the foramen cecum at the point. (shaped like a triangle)
sulcus terminalis
What includes the condyle of the mandible, the coronoid process, and the mandibular notch?
the mandible
also called the meniscus of the joint, which divides the tmj into 2 compartments called synovial cavities where synovial fluid is produced to lubricate the joint
articular disc
TMJ’s two types of movements include
gliding and rotational
is the limited ability to open the mouth, due to the contraction of the muscles of mastication. “Lock jaw”
trismus
dislocation of both joints caused by opening the mouth to wide
subluxation
—– carry oxygenated blood away from the heart
Arteries
—– carry deoxygenated blood to the heart
Veins
the —- artery carries deoxygenated blood from the right side of the heart to the lungs
pulmonary artery
What forms the maxillary vein and drains the PSA and IA veins?
pterygoid plexus
There is a potential for piercing the —- —– during the delivery of a PSA block via over insertion of the needle, which can result in a hematoma as well as infection
Pterygoid Plexus
What is associated with a duct?
exocrine
What is associated with being ductless, secretes directly into the blood
endocrine
endocrine gland that secretes parathyroid hormone to regulate calcium and phosphorus levels
parathyroid gland
what gland develops t cell lymphocytes
thymus
Which gland is the cause for the protrusion off the bottom of the hypothalamus at the base of the brain which helps control growth, BP, certain functions of the sex organs, thyroid glands and metabolism, as well as some aspects of pregnancy, child birth, nursing, water, and salt concretions.
pituitary gland
What system controls the salivary gland?
autonomic nervous system
—– — produces either a small flow, which is rich in protein or no flow at all
sympathetic stimulation
largest encapsulated major salivary gland, 25 % saliva produced, saliva is serous divided into 2 lobes
Parotid
Facial nerve passes through the
parotid, and does not innervate
Stenson’s duct empties opposite maxillary molars or
parotid duct (9th cranial nerve)
2nd largest encapsulated major salivary gland. Produces 60-65% of total volume, mixed secretion of both serous and mucous type
submandibular
Wharton’s duct empties into —–
caruncle or submandibular duct
What is the most common gland to be involved in salivary stone formation?
submandibular 7th nerve
Most diffuse and the only encapsulated major salivary gland. 10 percent of total volume mix of mucous and serous.
sublingual
What duct is associated with sublingual?
Bartholin’s duct or sublingual duct near the midline of the floor of the mouth on each side of the lingual frenum
Saliva also exists along the sublingual fold directly from 8-20 excretory ducts known as the —– ducts. Both empty at caruncle.
Rivinus ducts
The minor salivary glands are innervated by the —– cranial nerve
7th
—– —– are also considered minor salivary glands and are found in a trough circling the circumvallate papillae on the dorsal surface of the tongue near the terminal sulcus, they secrete a purely serous fluid that begins lipid hydrolysis.
Von Ebner glands
sensory nerve that comes into periphery of the body to the brain or spinal cord.
afferent nerve
motor nerve that carries information away from the brain or spinal cord to the periphery of the body
efferent nerve
muscles of the tongue
hypoglossal XII
S-sensory
M-motor
B-Both
IN ORDER
Some Say marry money but my brother says bad business marry money
V1
V2
V3
ophthalmic sensory
maxillary sensory
mandibular sensory and motor
sensory to chin, lower lip, labial mucosa near mandibular anterior teeth, facial gingiva tissue of cuspids, incisors and premolars forward
mental
the —– —- is a sensory ganglion of the trigeminal nerve that occupies a cavity (meckels cave)
trigeminal ganglion
lymph nodes are divided into 2 regions which are
capsule and cortex
is the change of lymph nodes in size and consistency, healthy nodes are usually small, soft and mobile
lymphadenopathy
— — drain regions while —– —- drain —- nodes
primary nodes
secondary nodes
primary nodes
collects lymph from the central lower lip, the floor of the mouth, mandibular incisors and the apex of tongue associated with infections on #24,#25
submental
— — collects lymph from maxillary 3rd molars
deep cervical
the largest pulmonary artery is the
main pulmonary artery or pulmonary trunk from the heart
the smallest arteries are the —— which lead to the capillaries that surround the pulmonary alveoli
arterioles
the only frenum without muscle fibers is the
maxillary
tooth development begins in utero at
3-4 months
only tooth that has an oblique ridge
maxillary first molar
true/false
a mandibular molar may have 4 or 5 cusps
true
Which teeth have a large well developed cingulum
maxillary canine
The cingulum of a mandibular canine is
smoother and rounded
are usually found as three small bumps on the incisal edges of anterior teeth
mammelons
the incisal edges is the first to wear away from attrition therefore mammelons may not be visible on teeth of older people t/f
true
most prominent CEJ
max central incisors
may have a palatogingival groove and considered a carious developmental pit or surface
max lateral incisor
longest root
max canine
two roots facial/lingual, may have one root, most common 60% have 2.
1st premolar
Which root is the longest on a 1st max molar
palatal
how many roots does a second maxillary molar have
3
root characteristic vary greatly, may be three rooted, roots may be fused, and may have accessory roots
the 3rd max molar
Where are enamel pearls most frequently seen?
on maxillary molars in the furcation areas
very narrow facial/lingual surfaces and broader proximal. Frequently have very shallow root concavities on proximal surfaces
mand central and laterals
may have a root apex that is bifurcated into a facial and lingual root
mand canine
which area is strongest on a mand first molar
the mesial (widest and strongest)
how many roots does a second mandibular 1st and second molar have
2
the mandibular third molar is frequently
shorter, fused, and dilacerated
it can either let a substance (molecule or ion) pass through freely, pass through to a limited extent or not pass through at all
semi permeable
the cells internal sub structure
cytoplasm
organelle that houses the cell chromosomes and is the place where almost all DNA replication and rna synthesis (transcription occur)
cell nucleus
is studded with ribosomes that are the sites of protein synthesis
rough ER
lacks ribosomes and functions in lipid manufacture and metabolism the production of steroid hormones, and detoxification
smooth er
process and package
Golgi apparatus
organelles that contain digestive enzymes
lysosomes
organizes and maintains cells shape
cytoskeleton
is the division of a germ cell involving two fissions of the nucleus and giving rise to four gametes or sex cells each possessing half the number of chromosomes of the original cell
meiosis
used by single celled organisms to reproduce it is also used for the organic growth of tissues, fibers and membranes.
mitosis
— is found in sexual reproduction of organisms
meiosis
first stage of cell division
PROPHASE metaphase anaphase telophase PMAT
hardest tissue in the body
enamel
striae of retzius are
incremental growth lines of mineralization
What mineralization is most like bone?
cementum
calcified tissue covering the root dentin
part of the periodontium that attaches the teeth to the alveolar bone by anchoring the periodontal ligament,
cementum
What provides nutrients to cementum
PDL
forms the bulk of tooth tissue
“collagen fibers”
dentin
what is harder than bone and cementum but not as hard as enamel
dentin
center of tooth made up of living connective tissue and cells
pulp
found on the dorsum of the tongue, hard palate, and attached gingiva
keratinized stratified squamous epithelium
“masticory mucosa’
buccal mucosa, labial mucosa, and alveolar mucosa
lining mucosa, non keratinized stratified squamous epithelium
specifically in the regions of the taste buds and lingual papillae on the dorsal surface of the tongue
specialized mucosa
the sulcular epithelium is
nonkeratinized
What includes rete pegs?
attached gingiva
the col is — area of interdental gingiva which connects the facial and lingual aspects of the interdental gingiva/papilla
nonkeratinized
cuff like band of squamous epithelium that encircles the tooth and is attached to the tooth which attaches the sulcular epithelium
JE
What does the JE form?
base of the sulcus
PDL is connected to the cementum and bone by collagen fibers called
sharpeys fibers
sensory functions of pain and displacement sensitivity
PDL
lining of oral cavity, teeth ,and nerves are derived from
ectoderm as well as skin
most of the face and oral cavity are formed from the
frontal process and the pharyngeal or brachial arches
—- — is the primordial structure for the mandible
meckels cartilage
palatal development forms between the
4th and 6th week of embryonic development
the primary palate is formed in this period by fusion/merging of the medial nasal and maxillary processes. subsequently, between the — and — embryonic/ fetal weeks. fusion is anterior to posterior
6th and 12th
What is the last portion of the palate to form
soft palate and uvula
first sign of tooth development occurs at
6th week
True/false
cells are derived from the ectoderm of the first pharyngeal arch and the ectomesenchyme of the neural crest. All tooth formation is from ectomesenchyme
true
the tooth germ is organized into three parts
the enamel organ, the dental papilla, and the dental sac or follicle
what will produce all the supporting structures of a tooth
dental sac
first sign of an arrangement of cells in the tooth bud
cap stage
during the bell stage, the —- defines the shape of the crown
IEE
intermedium and inner enamel epithelium
Hertwigs epithelial root sheath (HERS) is associated with
the bell stage
the formation of —- must always occur before the formation of enamel
dentin
The degeneration of REE (reduced enamel epithelium) also mediates the
initial epithelial attachment to the tooth
WEhat type of cementum forms first
acellular
what initiates the formation of dentin in the root of a tooth by causing the differentiation of odontoblasts from the dental papilla.
Hertwigs epithelial root sheath HERS
true/false
The root sheath eventually disintegrates with the PDL but residual pieces that do not completely disappear are seen as epithelial cell (———)
rest of malassez
can turn into cysts
which muscle shifts the mandible to the side of the face
lateral pterygoid
the maxillary teeth, buccal gingiva, and pulp of molars are innervated by which cranial nerve
V
true/false
The submandibular gland which lies superior to the digastric muscles, and divided into superficial and deep lobes, are separated by the mylohyoid muscle. It produces serous type secretion only from the stensons duct.
first true
second false
All but which of the following contain taste buds
a. foliate
b. filiform
c. fungiform
d. circumvallate
e. foliate lingual
b. filiform
Major branches of the maxillary artery include all but which of the following?
a. infraorbital
b. inferior alveolar
c. superior thyroid
d. greater palatine
e. posterior superior alveolar
Superior thyroid
the superior thyroid is a branch of the external carotid, all other are branches of the max artery
True/false
the pituitary gland is an endocrine gland protrusion off the bottom of the hypothalamus at the base of the brain. This gland is responsible for thyroid glands and metabolism as well as water/salt concentration at the kidneys, temp regulation and pain relief.
Both true
Eventually in tooth development the condensation of ectomesenchyme cells will form the dental sac which will develop into which of the follow
a. PDL
b. pulp
c. dentin
d. enamel
PDL
Which of the following arteries carry deoxygenated blood a. facial b lingual c maxillary d. pulmonary e. superior thyroid
pulmonary
T lymphocytes mature in which of the following
a. bone
b. thyroid gland
c. thymus gland
d. pituitary gland
e. parathyroid gland
thymus gland
rest of malassez, located in PDL and can develop into cysts and form form from which?
a. stellate reticulum
b. ectomesenchyme
c. outer enamel epithelium
d. reduced enamel epithelium
e. HERS
E
All of the following are muscles of mastication except for which
a. masseter
b. buccinator
c. temporalis
d. lateral p.
e. medial p.
buccinator
which muscle retracts tongue
styloglossus
all of the following are branches of the mandibular division of the trigeminal nerves except
a. lingual
b. masseteric
c. deep temporal
d. inferior alveolar
e. superior longitudinal
e
the mandibular division V3 of the trigeminal nerve exits
foramen ovale
hypomobility due to a loss of elasticity of the masticory muscles of tmj ligaments is known as trismus. trismus results in dislocation of both joints.
first true
second false
each of the following triangles is in the posterior triangle of neck except one
a. carotid
b. occipital
c. subclavian
d. none
a
the lymphatics draining the mandibular incisors usually empty directly into which of the following nodes
a. facial
b. parotid
c. submental
d. deep cervical
e. submandibular
submental