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Neuroscience I Block 1 > Neck Myology > Flashcards

Neck Myology Flashcards

1
Q

Posterior Triangle Boundaries

Main and Subtriangles

A

Sternocleidomastoid M
Trapezius M
Clavicle

Inferior Omohyoid M separates subtriangles
Occipital and Supraclavicular Triangles

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2
Q

Posterior Triangle Contents (6)

A

Levator Scapulae M
Anterior, Middle and Posterior Scalene Ms
Inferior Belly of Omohyoid M
Splenius Capitus M

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3
Q

Occipital Triangle Contents (3)

A

External Jugular V
Posterior Branches of Cervical Plexus
Transverse Cervical A

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4
Q

Supraclavicular Triangle Contents (2)

A

Subclavian A

Suprascapular A

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5
Q

Sternocleidomastoid Muscle

Innervation and Actions

A

Spinal Accessory N (CN XI)

Laterally flex head and rotate head away

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6
Q

Anterior Scalene Muscle

Innervation and Actions

A

C4-C6 Muscular Branches

Elevate 1st rib
Flex/Laterally flex head
Rotate head away

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7
Q

Middle Scalene Muscle

Innervation and Actions

A

C3-C8 Muscular Branches

Elevate 1st rib
Laterally flex head

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8
Q

Posterior Scalene Muscle

Innervation and Actions

A

C5-C7 Muscular Branches

Elevate 2nd rib
Laterally flex head

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9
Q

Omohyoid Muscle

Innervation and Actions

A

Ansa Cervicalis C1-C3

Depress hyoid and elevate larynx

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10
Q

Anterior Triangle Boundaries

A

Median Line of Neck
Sternocleidomastoid M
Mandible

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11
Q

Anterior Triangle

Subdivisions and Separating Structures

A

Suprahyoid
Submental and Submandibular Triangles
Separated by Anterior Digastric M

Infrahyoid
Muscular and Carotid Triangles
Separated by Superior Omohyoid M

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12
Q

Suprahyoid Muscles (4)

A

Mylohyoid M
Geniohyoid M
Digastric M
Stylohyoid M

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13
Q

Mylohyoid Muscle

Innervation and Actions

A

Mylohyoid N

Elevates Hyoid, mouth floor and tongue

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14
Q

Geniohyoid Muscle

Innervation and Actions

A

C1 via Hypoglossal N

Anterosuperior hyoid, shortens mouth and widens pharynx

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15
Q

Digastric Muscle

Innervation and Actions

A

Anterior - Mylohyoid N, Posterior - Facial N

Depress mandible, elevate hyoid

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16
Q

Stylohyoid Muscle

Innervation and Actions

A

Facial N

Elevate and retract hyoid, elongate mouth

17
Q

Infrahyoid Muscles (4)

A

Sternohyoid M
Sternothyroid M
Thyrohyoid M
Omohyoid M

18
Q

Sternohyoid Muscle

Innervation and Actions

A

Ansa Cervicalis C1-C3

Depress hyoid

19
Q

Sternothyroid Muscle

Innervation and Actions

A

Ansa Cervicalis C2-C3

Depress hyoid and larynx

20
Q

Thyrohyoid Muscle

Innervation and Actions

A

C1 via Hypoglossal N

Depress hyoid
Elevate larynx

21
Q

Platysma Muscle

Innervation and Actions

A

Facial N

Frown and draw neck skin superior

22
Q 
Pharyngeal Muscles (6)
Innervations and Actions
A

All innervated by Pharyngeal Plexus and Pharyngeal Branch of Vagus N, except Stylo

Superior Pharyngeal Constrictor M
Middle Pharyngeal Constrictor M
Inferior Pharyngeal Constrictor M
Constricts pharyngeal wall

Palatopharyngeus M
Salpingopharyngeus M
Stylopharyngeus M (Glossopharyngeal N CN IX)
Elevates pharynx and larynx

23
Q 
Laryngeal Muscles (8)
Common Innervation, Exception Innervation and Actions
A

Recurrent Laryngeal N

Cricothyroid M (Inn by External Laryngeal N)
   Stretch/tense vocal fold
Posterior Cricoarytenoid M
   Abduct vocal fold
Lateral Cricoarytenoid M
   Adducts vocal fold
Transverse Arytenoid M
   Closes rima glottidis
Oblique Arytenoid M
   Closes rima glottidis
Aryepiglottic M
   Pulls arytenoid to epiglottis
Thyroarytenoid M
   Relax vocal fold
Vocalis M
   Relax posterior and tense anterior vocal fold
24
Q

Longus Colli Muscle

Innervation, Parts and Actions

A

Muscular Branches of Cervical Spinal Ns

Inferior Oblique - rotate head away

Superior Oblique - laterally flex head

Vertical - flex head

25
Q

Longus Capitis Muscle

Innervation and Actions

A

Muscular Branches of Cervical Spinal Ns

Flex Head

26
Q

Rectus Capitis Anterior Muscle

Innervation and Actions

A

Muscular Branches of Cervical Spinal Ns

Flex Head

27
Q

Rectus Capitis Lateralis Muscle

Innervation and Actions

A

Muscular Branches of Cervical Spinal Ns

Laterally flex head

28
Q

Zones of Penetrating Trauma

Commonness and Structures

A

Zone 1: Less common, Harder to fix
Contains lungs, thyroid, parathyroid, trachea, esophagus, common carotid, Jugular V, Cervical Vert.

Zone 2: Most common, Easier to fix
Contains Larynx/Cartilages, Carotid A, Jugular V, Esophagus and Cervical Vertebrae

Zone 3: Less common, Harder to fix
Salivary Glands, Cavities, nasal/oro pharynx

Neuroscience I Block 1 (11 decks)

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