Anatomic Sciences Ch. 1

Which paired muscle covers most of the lateral aspect of the ramus of the mandible?
a. temporalis
b. masseter
c. lateral pterygoid
d. medial pterygoid
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Terms in this set (98)
Which paired muscle covers most of the lateral aspect of the ramus of the mandible?
a. temporalis
b. masseter
c. lateral pterygoid
d. medial pterygoid
B
During periodontal surgery, a fenestration is exposed on tooth #6. A fenestration is a defect of which type of bone?
a. compact
b. cancellous
c. interdental
d. interradicular
A
The fibrous connective tissue membrane covering the outside of the bone is called the
a. endosteum
b. periosteum
c. hyaline cartilage
d. articular cartilage
B
What is the point of the synovial membrane in a synovial joint?
a. secrete fluid into the joint cavity
b. surround the joint like a fibrous sleeve
c. innervate the muscles that move the joint
d. convey a sense of position and movement
A
Which component of a nerve conducts impluses towards the body?
a. axon
b. soma
c. neuron
d. dendrite
D
Which spinal vertebrae fuse together to form a triangular mass?
a. sacral
b. lumbar
c. cervical
d. thoracic
A
The ophthalmic nerve is the first division of the fifth cranial nerve V, the trigeminal nerve. The maxillary nerve is the second division of the trigeminal nerve.
a. Both statements are true.
B. Both statements are false.
c. The first statement is true, the second statement is false.
d. The first statement is false, the second statement is true.
A
Which injections technique would be used to achieve anesthesia of teeth #15 and #16?
a. nasopalatine block
b. anterosuperior alveolar block
c. middle superior alveolar block
d. posterosuperior alveolar block
D
The infraorbital foramen is located in which bone?
a. frontal
b. maxilla
c. zygomatic
d. sphenoid
B
All of the following are foramina in the sphenoid bone EXCEPT the
a. incisive foramen
b. superior orbital fissue
c. foramen ovale
d. foramen rotundum
A
Which muscle retracts the tongue? a. genioglossus b. hyloglossus c. styloglossus d. palatoglossusCWhich plane of dissection divides the body into anterior and posterior portions? a. frontal b. sagittal c. horizontal d. medianATeeth #3 and #14 are a. ipsilateral to each other b. contralateral to each other c. inferior to each other d. superficial to each otherBThe following characteristics describe muscle tissue EXCEPT one. Which one is the EXCEPTION? a. each muscle has two ends b. muscle cells are called sarcomeres c. muscles are categorized according to their role in movement d. the muscle origin is attached to the least movable part e. the muscle insertion is attaches to the most movable partBWhich lymph nodes drain both sides of the chin, the lower lip, the floor of the mouth, the apex of the tongue, and the mandibular incisors? a. facial b. submental c. submandibular d. retropharyngealBWhich endocrine gland matures T-lymphocytes for the immune system and undergoes involution (reduces in size) after puberty? a. thyroid b. thymus c. pancreas d. parathyroidBThe corrugator supercilii is a muscle of facial expression in which region? a. eye b. nose c. mouth d. scalpAWhich muscle elevates the mandible? a. risorius b. buccinator c. medial pterygoid d. lateral pterygoidCWhich muscle originates from the alveolar process of the maxilla, the alveolar process of the mandible, and the pterygomandibular raphe? a. masseter b. risorius c. buccinator d. sternocleidomastoidCWhich part of the brain regulates homeostasis? a. medulla b. thalamus c. cerebellum d. hypothalamusDWhich branch of the trigeminal nerve contains both sensory and motor components? a. ophthalmic V1 b. maxillary V2 c. mandibular V3CWhich of the following are the two main divisions or systems of the autonomic nervous system? a. brain, spinal cord b. afferent impulse, efferent impulse c. sympathetic system, parasympathetic systemCWhich cranial nerve provides parasympathetic innervation to the cardiac muscles, thymus, and stomach? a. IV b. X c. XI d. XIIBWhich of the following is NOT innervated by the middle superior alveolar nerve? a. tooth #4 b. tooth #12 c. distobuccal root of tooth #2 d. mesiobuccal root of tooth #14CThe muscles of facial expression are innervated by which nerve? a. IV b. V c. VII d. VIIICWhich vein receives blood flow from the superficial temporal vein and the facial vein and drains into the external jugular vein? a. maxillary b. ophthalmic c. inferior alveolar d. retromandibularDThe articulation of the temporomandibular joint involves which two bones? a. temporal bone, mental protuberance b. sphenoid bone, coronoid process of the mandible c. temporoal bone, mandibular condylesCWhich artery supplies the mandibular teeth and surrounding tissues with blood? a. facial b. lingual c. inferior alveolar d. pterygoid plexusCWhich major artery supplies the brain with blood and is palpated during emergency situations? a. aorta b. subclavian c. internal carotid d. common carotidDWhich artery is the source of the ophthalmic artery, has NO branches, and is located deep to the sternocleidomastoid muscle? a. aorta b. subclavian c. external carotid d. internal carotidDThe facial artery is a direct branch of which main artery? a. subclavian b. internal carotid c. external carotid d. brachiocephalicCWhich of the following arteries supplies the maxillary anterior teeth with blood? a. incisive b. mylohyoid c. greater palatine d. anterior superior alveolarDThe facial vein drains each region of the head and next EXCEPT one. Which one is the EXCEPTION? a. orbital region b. upper lip area c. lower lip area d. submental regionAVeins of teeth had alveolar branches and dental branches. Which branch type would drain the pulp tissue of the teeth through the apical foramen? a. alveolar branches b. dental branches c. both a and b d. neither a or bBWhich vein has NO valves, drains most of the head and neck region, and does NOT drain any of the dentition? a. internal jugular b. external jugular c. internal maxillary d. inferior alveolarAMany veins in the head and neck region lack valves. Valveless veins of the head and neck contribute to the severe and rapid spread of dental infections. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueAEach of the following is an afferent cranial never EXCEPT one. Which one is the EXCEPTION? a. optic b. vagus c. olfactory d. hypoglossalDWhich muscle, upon contraction, protrudes the tongue? a. genioglossus b. hyloglossus c. styloglossusAEach of the following is a suprahyoid muscle EXCEPT one. Which one is the EXCEPTION? a. mylohyoid b. geniohyoid c. stylohyoid d. sternohyoidDCervical lymph nodes run along which muscle? a. trapezius b. buccinator c. epicranial d. sternocleidomastoidD1. b 2. d 3. a 4. e 5. c1. b 2. c 3. e 4. a 5. d1. d 2. a 3. e 4. c 5. bThe first branchial arch is also called the mandibular arch. The cartilage forming within the mandibular arch is known as Reichert cartilage. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueCEach of the following is a period of prenatal development EXCEPT one. Which one is the EXCEPTION? a. fetal b. ovulation c. embryonic d. preimplantationBWhich cells are responsible for producing dentin? a. osteoblasts b. ameloblasts c. odontoblasts d. cementoblastsCEach of the following is a component of the tooth germ EXCEPT one. Which one is the EXCEPTION? a. enamel organ b. dental sac c. dental lamina d. dental papilla e. dental follicleCOrder the states of odontogenesis. Match each letter with its proper sequence number. ___a. cap stage ___b. bud stage ___c. bell stage ___d. maturation stage ___e. initiation stage1. e 2. b 3. a 4. c 5. dDivision of a cell into two daughter cells occurs during which phase of mitosis? a. prophase b. anaphase c. metaphase d. telophaseDThe inner cells of the dental papilla will develop into which structure? a. cementum b. dentin c. pulp d. enamelCThe earliest indication of a part or an organ during prenatal development is referred to as the a. primordium b. stomodeum c. zygote d. nucleusAWhich primordial structure differentiates into the ameloblasts that produce enamel? a. outer enamel epithelium b. stellate reticulum c. inner enamel epithelium d. stratum intermediumCWhich stage of tooth development occurs between the 11th and 12th weeks of prenatal development? a. bud b. cap c. bell d. initiationCWhich of the following cells is/are DIRECTLY responsible for immunoglobulin production? a. plasma b. basophils c. monocytes d. neutrophils e. eosinophilsAIncremental lines that stain brown in preparations of meture enamel are a. neonatal lines b. enamel tufts c. lines of Retzius d. enamel spindles e. enamel lamellaeCWhich period of prenatal development occurs during months 3 to 9? a. fetal b. embryonic c. preimplantation d. a only e. a and bAFrom the following list, select the structures of the embryo that begin development in week 4 of prenatal development. a. face b. neck c. palate d. tongue e. placentaA, B, DEach cell facilitates the exfoliation of a primary tooth EXCEPT one. Which one is the EXCEPTION? a. ameloblast b. osteoblast c. odontoblast d. cementoblastAThe cervical loop is responsible for development of a. dentin b. pulp c. enamel d. rootDDown syndrome is a developmental disturbance that occurs during which period of prenatal development? a. fetal b. embryonic c. preimplantationCThe incomplete developmental division of a tooth germ is called FUSION. Fusion takes place during the initiation stage of tooth development. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueBWhich is the most common cell found in the lamina propria of the oral mucosa a. epiblast b. odontoblast c. osteoblast d. fibroblastEThe cells responsible for the development of the periodontal ligament come from the a. dental sac b. dental papilla c. enamel organ d. successional lamellaeAThe cup of Carabelli is found on which permanent molars? a. #3, #14 b. #2, #15 c. #19, #30 d. #18, #31AEight bones compose the neurocranium, surrounding the brain. Fifteen bones compose the viscerocranium, the bones of the face. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueCThe sphenoid bone is composed of the a. palatine process b. temporal fossa c. superior orbital fissure of the orbit d. base of the skull anterior to occipital bone e. b, c, and dEAnatomically, the inferior alveolar artery supplies which structure? a. soft floor of mouth b. tongue muscle c. sublingual gland d. mandibular teethDThe functions of the lymphatic system include all EXCEPT one. Which one is the EXCEPTION? a. filter fluids b. fight infections c. produce lymphocytes d. produce thrombocytes e. return plasma to venous bloodstreamD1. c 2. a 3. bThe abducens (VI), trochlear (IV), the oculomotor (III) nerves all provide innervation to the muscles of the eye. These nerves provide sensory innervation. a. both statements b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueC1. a 2.c 3.b1. d 2. a 3. b 4. c1. d 2. a 3. b 4. cThe temporomandibular joint (TMJ) is capable of which two types of movement? a. rotation, gliding b. hinge, translation c. pivot, ball-and-socket d. ball-and-socket, saddleAWhich arteries are the terminal branches of the external carotid artery? a. superior thyroid, lingual b. facial, ascending pharyngeal c. posterior auricular and occipital d. maxillary, superficial temporalDA hematoma that results from the administration of a posterior superior alveolar (PSA) nerve block is caused by bleeding from which arteries or veins? 1. posterior superior alveolar artery 2. pterygoid plexus of veins 3. temporal artery 4. facial artery 5. maxillary vein 6. posterior retromandibular veinDHow many teeth are present in an individual with a full deciduous dentition? a. 20 b. 24 c. 28 d. 32AWhich is NOT a characteristic feature of the primary dentition? a. thin enamel b. thin dentin c. large pulp cavity d. whiter in color than permanent dentitionBWhich teeth have wider crowns mesiodistally than faciolingually? a. #5 and #12 b. #7 and #10 c. #24 and #25 d. #23 and #26BEach is an important function of the cementoenamel junction (CEJ) EXCEPT one. Which one is the EXCEPTION? a. pevention of caries b. self-cleansing properties c. food deflection resulting in gingival inflammation d. health and maintenance of periodontal tissue in interproximal spacesA1. d 2. c 3. b 4. e 5. a 6. fThe clinical crown-to-root ratio is always the same. However, the anatomic crown-to-root ratio may change. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueBThere is relatively constant mesial movement of the molars to compensate for proximal abrasions. Relatively consistent occlusal forces result in bone remodeling. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueAEnamel is formed by ameloblasts, which are derived from the ectoderm. The ectoderm also signals the mesoderm to start the development of dentin and pulp. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueACellular metabolism occurs in the a. ribosomes b. lysosome c. mitochondria d. Golgi apparatus e. endoplasmic reticulumCDuring facial development, the two structures forming the major facial structures are the frontonasal process and the pharyngeal (branchial) arch I. This process begins during week 6 in utero. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueCEach is a paranasal sinus EXCEPT one. Which one is the EXCEPTION? a. frontal b. mandibular c. maxillary d. sphenoidal e. ethmoidalBWhich muscle involved in facial expression does not have a bony attachment, shapes and controls the size of the mouth opening, and helps create lip positions and movements during speech? a. risorius b. zygomaticus major c. orbicularis oris d. levator anguli orisCEach is an anterior branch of the external carotid artery EXCEPT one. Which one is the EXCEPTION? a. occipital b. superior thyroid c. facial d. lingualAWhich gland is associated with dry eye syndrome (DES), also known as keratoconjunctivitis sicca? a. thyroid b. thymus c. lacrimal d. parathyroidCThe face and its related tissues begin to form during week 6 of prenatal development, within the fetal period. Facial development is completed by week 12. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueDWhich developmental disturbance appears as a "tooth within a tooth" on a radiologic examination? a. fusion b. tubercles c. gemination d. dens in denteDEach is a type of connective tissue EXCEPT one. Which one is the EXCEPTION? a. bone b. blood c. muscle d. cartilageCEnamel may be lost through attrition, abrasion, caries, or abfraction. Radiographically, enamel appears more radiolucent than dentin or pulp, both of which appear more radiopaque. a. both statements are true b. both statements are false c. the first statement is true, the second statement is false d. the first statement is false, the second statement is trueCWhich acronym defines the correct sequence of words used to describe a tooth? a. D-T-A-Q b. D-A-C-T c. C-A-D-Q d. D-A-Q-TDHow many permanent anterior teeth are present in an adult mouth? a. 6 b. 8 c. 10 d. 12DWhich tooth number represent maxillary first premolars? a. #5 and #12 b. #3 and #14 c. #21 and #28 d. #24 and #25AWhich statement is correct? (Select all that apply.) a. maxillary second premolars are bifurcated with a buccal and palatal root b. mandibular molars are bifurcated with a mesial and distal root c. maxillary molars are trifurcated with a mesiobuccal, distobuccal, and palatal root d. maxillary first premolars are bifurcated with a buccal and palatal rootB, C, D