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NWCC Mash GA I Qz 4

NWHSU Gross Anatomy 1 Quiz 4

QuestionAnswer
(A.) Draw a simple CROSS SECTION of the spinal cord with dorsal & ventral roots attached. Now draw in thhe components (cell bodies, fibers, etc) of a CROSSED EXTENSOR reflex arc. (B.) Does the reflex illustrate the principle of the common path? A. Draw on your own... B. Yes this illustrats the Principle of the Common Path
(A.) Draw a simple CROSS SECTION of the spinal cord with dorsal & ventral roots attached. Now draw in thhe components (cell bodies, fibers, etc) of a STRETCH reflex arc. (B.) What is the stimulas which causes reflex? C. Is this contralateral reflex? A. Draw on your own... B. myotaxisor stretch on the muscle spindle fibers. C. no, its an ipsilateral reflex.
A deep HORIZONTAL groove extending from the internal occipital protuberance and joining the "sulcus for the sigmoid sinus"? Sulcus for the transverse sinus
A pair of projections for muscle attachments on the anterior INNER surface of the mandible? Mental Spines
Basilar portion of occipital bone, anterior to the foramen magnum and fused to sphenoid; term means "declining part"? Clivus
Besides being a 3 sensory neuron relay, list 4 general principals about afferent tracts to the cerebral cortex. 1. principle of divergence; 2. discriminating awareness occurs in the cerebral cortex; 3. crude awareness occurs in thalamus; 4. neuron
Besides drawing the head posteriorily, give 2 actions of the Splenius Capitis. 1. Rotate the head to the same side 2. Bends the head laterally
Bone contributing LEAST to the bony orbit? Palatine
BONE that articulates posteriorly with the ethmoid and anteriorly with the frontal process of the maxilla. Lacrimal
Cranial nerve that innervates the posterior 1/3 of the tongue (taste and general sensation) Glossopharyngeal
Cranial nerve that supplies only the superior oblique muscle. CN IV (4)Trochlear N
Cranial nerve that supplies the inferior rectus, inferior oblique, etc. muscles CN III (3) Oculomotor
Cranial nerve that supplies the lacrimal gland, sublingual gland, submandibular glands and other minor glands and mucosa. CN VII (7) Facial N.
Cranial Nerve that supplies the lateral rectus m.? CN VI (6) Abducens
Cranial Nerve that supplies the superior, medial and inferior rectus, inferior oblique and levators palpebrae superior muscles? CN III (3) Oculomotor
Cranial nerves from which parasympathetics originate. 3,7,9,10
Curved ridge/line extending laterally from the EOP? Superior Nuchal Line
Describe in detail how most parasympathetics are supplied to pelvic viscera? Preganglionics via pelvic splanchnic nerves, S2-4,synapse in the parasympathetic terminal ganglia near or in walls of viscera. Postganglionics to pelvic viscera, descending & sigmoid colon, rectum & upper part of anal canal.
Describe in detail how most parasympathetics are supplied to thoracic and abdominal viscera. Preganglionics via cranial nerve 10 to synapse in parasympathetic terminal ganglia. Postganglionics to thoracic and abdominal viscera.
Describe the basic structure of the temporomandibular joint. (BE DETAILED AND COMPLETE!) The mandibular fossa, and mandibular chondyle are both covered w/ fibrocartilage. There is fibrocartilagenous disk which separates the articular capsule into an upper and lower compartment. The joint is considered a hinge, and a plane joint
Discuss in detail how most sympathetics are supplied to the head. You may begin with the white ramus communicans. Preganglionics go up, through the upper cervical ganglion, synapse there, then the postganglionic sympathetic neurons go to the head structures.
Discuss in detail how most sympathetics are supplied to the thoracic viscera. You may begin with the white ramus communicans. Preganglionics - synapse in the superior, middle and inferior cervical ganglia and C1-4 ganglia of sympathetic trunk. Postganglionics - go to the thoracic viscera via small visceral branches.
Discuss the movements of the structural components of the TM Joint during opening of the mouth. (NO MUSCLES) Also Worded as: Discuss the specific movements of the articular disk and mandibular condyle? Protraction: mandibular condyle & articular disc move forward until the articular tubercle (upper compartment); Depression: mandibular condyle roatates under the articular disc (lower compartment)
Erector Spinae m. which inserts into the mastoid process. (be specific) Longissimus Capitis
Erector Spinae m. which originates from the upper ribs and inserts into the TP's of mid-cervical vertebrae. (be specific) Iliocostalis Cervicis
Erector Spinae m. which originates off the lower ribs and inserts into the angles of the upper ribs and TP of C7. Iliocostalis Thoracis
Erector Spinae m. which originates off the sacrum, illiac crest and thoracolumbar fascia and inserts into lower 10 ribs and TP's off lumbar and thoracic vertebrae Logissimus Thoracis
Erector Spinae m. which originates off the spines of lower thoracic and upper lumbar vertebrae and inserts into the spines of upper thoracic vertebrae. (be specific) Spinalus thoracis
Erector Spinae m. which originates off TP's of upper thoracic vertebrae and inserts of TP's of cervical (up to C2 not including C1) Longissimus Cervicis
Erector Spinae muscle which originates off TPs of upper thoracic, articular processes of lower cervical vertebrae and inserts on the mastoid process Longissimus Capitis
Erector Spinae m. which originates off iliac crest, sacrum and thoracolumbar fascia and inserts into angles of lower ribs. Iliocostalis Lumborum
Forms part of the bony nasal septum; articulates with the vomer inferiorly? Perpendicular plate of ethmoid bone
Give action of the transversospinalis muscles. Extends column, rotates body (spinal column) to the opposite side
Give the SPECIFIC named areas of mandibular attachments of the: a. lateral ligament; b. sphenomandibular ligament a. lateral ligament -lateral neck of the mandibular condyle, b. lingula of the mandibular foramen
Give the SPECIFIC named areas of mandibular attachments of the: a. stylomandibular ligament; b. sphenomandibular ligament; c. lateral ligament a. from styloid process to the lower mandibular ramus; b. spine of sphenoid to the lingula of the mandible foramen; c. lateral ligament-lateral surface of neck of ramus of mandible
Give the spinal cord segments represented by the: a. greater splanchnic n. ; b. lumbar splanchnics a. greater - T5-T9 b. lumbar - L1-L2, L3
Give the spinal cord segments represented by the: a. greater splanchnic n. ; b. pelvic splanchnics a. greater - T5-T9 b. pelvic - S2-S4
Give the spinal cord segments represented by the: a. least splanchnic nerve; b. pelvic splanchnics a. least - T12; b. pelvic - S2-S4
Give the spinal cord segments represented by the: a. lesser splanchnic nerve; b. lumbar splanchnics a. lesser - T10-T11; b. lumbar - L1-L2, L3
Give two actions of the suboccipital mm. Extension of the neck and Rotation of head to face the same direction.
How are preganglionic parasympathetics supplied to abdominal and pelvic viscera? Preganglionics via pelvic splanchnics (S2-4) to terminal ganglia. Postganglionics to abdominal and pelvic viscera.
How are preganglionic parasympathetics supplied to thoracic and abdominal viscera? Preganglionics via CN 10(Vagus) to the terminal parasympathetic ganglion (near or in visceral wall); postaganglionics to thoracic and abdominal viscera
In general, where are parasympathetic ganglia located? Afferent fibers using parasympathetic routes are, in general, of what type (do NOT give letter classification) Located in or near organ innervated, physiological afferent
Innervation of anterior belly of digastric? CN V (5)Trigeminal N
Innervation of posterior digastric? CN VII (7) Facial N
Innervation of the deep intrinsic back muscles. Posterior Primary Division of Spinal Nerves (Dorsal Rami)
Innervation of thyrohyoid Hypoglossal contribution to C1 - ansa cervicalis
Insertion of the middle/medial scalene m. 1st Rib
Insertion of the POSTERIOR scalene muscle? 2nd Rib
Intrinsic back muscle which originates off the TP of a vertebra and inserts into the spine of one or two vertebrae above. Rotators (Short and Long)
Large opening on floor of orbit separating the orbital plate of the maxilla and greater wing of sphenoid? Inferior orbital fissure
L-shaped bone that contributes to the orbit, hard palate, and lateral wall of nasal cavity? Palatine
Midline projection in anterior cranial cavity - falx cerbri, a sheet of dura, attached here; also known as the "cock's comb"? Cristae Galli
Mnemonic for Cranial Nerves. Oh, Oh, Oh! To Touch And Feel Very Good Velvet, AH!
Mnemonic for Sensory, Motor or Both. Some Say Marry Money, But My Brother Says Bad Business Marry Money
Muscle best developed in cervical region, also present in lumbar region - absent in most of the thoracic; extends vertebral column and bends column toward same side. Intertransversarii
Muscle best developed in cervical region, also present in lumbar region. Absent in most of the thoracic area; act to extend the vertebral column, but does not bend it laterally? Interspinalis
Muscle found throughout the length of the vertebral column; it arises from the TPs and inserts into the SP's of TWO to FIVE segments above the origin. Multifidus
Muscle immediately deep (anterior) to upper trapezius; it has attachments to the skull and rotates the face to the same side. Splenius Capitis
Muscle of mastication which originates in part from the tuberosity of the maxilla? Medial Ptergoid
Muscle originating off SP's of upper thoracic vertebrae (T3-T6) and inserting on TP's of Upper cervical (C1-3). Splenius Cervicis
Muscle originating off the ligamentum nuchae and SP's of upper thoracic (T1-3) and inserting on the mastoid process of the adjacent occipital bone. Splenious Capitis
Muscle that depresses hyoid bone and elevates larynx. Thyrohyoid m.
Muscle that depresses, retracts and steadies the hyoid bone. Omohyoid m.
Muscle that elevates hyoid bone, floor of the mouth, and tongue during swallowing and speaking. Mylohyoid m.
Muscle that lies immediately posterior to most of the suboccipital muscles. Semispinalis Capitis
Muscle that originates off the posterior tubercle of the atlas and inserts into the medial part of the occipital bone. Rectus Capitis Posterior Minor
Muscle that originates from the inferior mental spine. Geniohyoid
Muscle that originates from the TP's of vertebrae and inserts into SP's of vertebrae ONE segment above origin. Short Rotators or Rotatores brevis
Muscle that pulls hyoid bone anterosuperiorly, shortens floor of mouth and widens pharynx. Geniohyoid
Muscle which originates off the SP of axis and inserts on the TP of the atlas. Obliquus Posterior Inferior
NAME (name NOT number) the cranial nerve innervating the superior oblique muscle? Trochlear N.
Name given to the closed anterior fontanelle? Bregma
Name given to the CLOSED anterolateral fontanelle? Pterion
Name given to the closed posterior fontanelle? Lambda
Name given to the closed posterolateral fontanelle? Asterion
Name given to the large space between the lesser and greater wings of the sphenoid; it transmits certain cranial nerves? Superior Orbital Fissure
Name given to where the ramus and body of the mandible meet? Angle of mandible
Name the ligaments responsible for reinforcing the temporomandibular joint? Lateral TM Ligament, Stylomandibular ligament, Sphenomandibular ligament
Name the main collateral ganglia. Superior mesenteric, inferior mesenteric, celiac
Name the structure transmited by the following skull openings: a. foramen rotundum b. jugular foramen c. condylar canal d. cribiform plate a. foramen rotundum - CN V (Trigeminal n.) subscript 2 (Maxillary division) b. jugular foramen canal - CN IX (Glossopharyngeal) Internal Julgular v. c. condylar canal - Emissary v. d. cribiform plate - CN I (Olfactory n.)
Name the structure transmitted by the following foramina: a. foramen cecum b. foramen spinosum c. condylar/condyloid canal d. foramen ovale a. foramen cecum - Emissary Vein b. foramen spinosum - Middle Meningeal Artery c. condylar/condyloid canal - Emissary Vein d. foramen ovale - Mandibular (III) division of the Trigeminal n. (V2)
Name the structure(s) transmitted by the following foramina: a. foramen rotundum b. condylar/condyloid canal c. cribriform plate d. mandibular foramen a. foramen rotundum-CN V (subscript 2) b. condylar/condyloid canal-emissary vein c. cribriform plate-CN I d. mandibular foramen-N.V.A.
Name the structure(s) transmitted by the following foramina: a. mastoid formaen b. internal acoustic meatus c. foramen rotundum d. jugular foramen a. mastoid foramen -Emissary Vein, b. internal acoustic meatus - CN VII and CN VIII, foramen rotundum CN V sub 2, jugular foramen - Internal Jugular v. and CN IX, X, XI
Name the structure(s) transmitted by the following skull openings: a. stylomastoid foramen; b. foramen cecum; c. mandibular foramen; d. internal acoustic meatus; e. foramen rotundum; f. condylar/condyloid canal a. stylomastoid f.-Some of CN 7; b. f. cecum -Emissary Veins; c. mandibular- Inferior Alveolar NAV; d. IAM - CN 7,8; e. f. rotundum - CN 5 Trigeminal Division 2 (V2); f. condylar/condyloid canal-Emissary Veins
Name the structure(s) transmitted by the following skull openings: g. Cribiform Plate; h. mastoid foramen; i. jugular foramen; j. foramen spinosum; k. foramen ovale; g. Cribiform Plate-(filaments of)CN1; h. mastoid f.-Emissary Veins; i. jugular f.-internal jugular v., CN9 glossopharyngeal, 10 Vagus, 11 Spiral Accessory; j. f. spinosum-middle meningeal a.; k. f. ovale-1/3 mandibular division of trigeminal n.;
Named part of the maxilla containing the maxillary sinus? Body
Named PORTION of the temporal bone containig the INNER ear? Petrous Portion
Of the 4 MAJOR muscle of mastication, which is/are capable of the following action(s)? Give name even if it provides only a slight contribution. A. elevate(s) the mandible B. depress(es) the mandible A. masseter, temporalis, medial pterygoid; b. lateral pterygoid
Of the 4 MAJOR muscles of mastication, name the muscle that PRIMARILY responsible for: a. protraction of the mandible; b. retraction of the mandible A. Lateral Pterygoid; B. Temporalis
Origin of the inferior head of the lateral pterygoid muscle. Lateral surface of medial pterygoid plate
Origin of the masseter muscle? Zygomatic arch
Origin of the scalene muscles (do not give ORIGIN of each individual muscle) TP's of cervical vertebrae
Origin of the superior head of the lateral pterygoid m.? Greater wing of the sphenoid
Parasympathetics arise only from these specific cranial nerves. CN 3,7,9,10
Parasympathetics have _______(long, short) preganglionic fibers. Both sympathetic and parasympathetic preganglionic fibers are _________ (myelinated, non-myelinated) Long, Myelinated
Part of the bony nasal septum that articulates with the perpendicular plate of the ethmoid? Vomer
Part of the sphenoid on which the hypophyseal fossa is located; this part is also known as "Turk's Saddle"? Sella Turcica
Pharmacological classification of postganglionic sympathetic fibers? Adrenergic
Pharmacological classification of postganglionic sympathetics to arrector pili muscles? Adrenergic
Pharmacological classification of preganglionic sympathetic fibers? Cholenergic
Pointed projections extending over the sella turcica for attachment of sura; they are located on lesser wings of sphenoid? Anterior Clinoid Process
Portion of the maxilla bearing teeth sockets? Alveolar Processes
Ridge over each orbit? Supracilliary Arch
Smooth area in the midline between the the 2 supracilliary arches? Glabella
Specific tract which conducts pain, temperature, pressure and crude touch. Spinothalamic Tract
Specific tract which conducts proprioception and discriminating(fine) touch. Posterior White Column - Medial Leminscal System
Specific tract which decussates (crosses) in the pyramids of the medulla (be very specific) Lateral Corticospinal Tract
Suboccipital m. that originates off the posterior tubercle of the ATLAS and inserts into the medial part of the occipital bone. Rectus Capitus Posterior Minor
Suboccipital m. which originates from the SP of the axis and inserts into area near the inferior nuchal line. Rectus Capitis Posterior Major
Suture between the squamosal part of the temporal bone and the parietal bone? Squamosal Suture
Suture present in fetus; usually disappears on adult? Metopic(frontal)Suture
The cranial nerves containing BOTH motor and sensory fibers(just list cranial nerve numbers). CN. 5,7,9,10
The effector organ of a somatic reflex arc. Skeletal m.
The lateral horn of the spinal cord functionally contains __________ (3 letter classification) neuron cell bodies. These neurons start impulses which innervate _________. GVE; glands, cardiac m., smooth m.
The MAJOR action of the lateral pterygoid m. Protraction of the jaw/mandible
The MOTOR only cranial nerves. CN 3,4,6,11,12
The SENSORY ONLY Cranial Nerves? CN 1,2,8
This SPECIFIC muscle is now considered part of semispinalis capitis. Spinalis Capitis
Upon OPENING the mouth, the patient's jaw involuntarily deviates to the left. This would predominately indicate a lack of function of the _______ muscle of the _______(right, left) side? Lateral Pterygoid; Left
Upon OPENING the mouth, the patient's jaw involuntarily deviates to the right. This would predominately indicate a lack of function of the _______ muscle of the _______(right, left) side? Lateral Pterygoid; Right
What does a sympathetic splanichnic nerve primarily contain? Where does it end? (be specific) Contains prefanglionic fibers. It ends at collateral ganglia.
What does a sympathetic splanichnic nerve primarily contain? Where does it end? (be specific) Preganglionic Fibers; the terminal and synapse in the collateral ganglia. (Upon termination of the splanchnic nerves, postganglionic fibers then travel from collateral ganglia to innervate viscera.)
What is meant by an intersegmental reflex? This is when the impulse involves more than 1 spinal cord segment.
What is meant by an ipsilateral reflex? Impulse and effector are on the same side of the body.
Created by: AnatomyMash