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LECOM MS1 Gross Anatomy Exam 3 > Neck: Triangles and Muscles > Flashcards

Neck: Triangles and Muscles Flashcards

1
Q

What are the borders of the anterior triangle of the neck

A

Anterior: SCM
Inferior: Mandible
Midline of neck

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2
Q

What are the borders of the posterior triangle of the neck

A

SCM
Trapezius
Clavicle
Occipital bone

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3
Q

What divides the posterior triangle

A

Omohyoid muscle

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4
Q

What does the omohyoid muscle divide the posterior triangle into

A

occipital and supraclavicular triangles

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5
Q

What are the divisions of the anterior triangle

A

Carotid
Submandibular
Submental
muscular triangle

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6
Q

What are the borders of the submandibular triangle

A

mandible

digastric muscle bellies

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7
Q

What are the borders of the submental triangle

A

hyoid bone

anterior belly digastric

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8
Q

What are the borders of the muscular triangle

A

SCM
Superior omohyoid
hyoid bone

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9
Q

What are the borders of the carotid triangle

A

superior omohyoid
SCM
posterior digastric and stylohyoid

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10
Q

What are the attachments of stylohyoid

A

syloid process

hyoid bone

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11
Q

What is the function of stylohyoid

A

elevation of hyoid

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12
Q

What is the innervation of stylohyoid

A

CNVII

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13
Q

What are the attachments of the digastric muscle

A

digastric fossa of mandible
mastoid notch
hyoid bone

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14
Q

What is function of digastric muscle

A

elevation of hyoid

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15
Q

What is the innervation of digastric muscle

A

anterior belly: V3

posterior belly: VII

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16
Q

What are the attachments of mylohyoid

A

hyoid bone

mylohyoid line of mandible

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17
Q

What are the functions of mylohyoid

A

elevation of hyoid

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18
Q

What is the innervation of mylohyoid

A

CN V3

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19
Q

What are the attachments of geniohyoid

A

mental spine of mandible

hyoid bone

20
Q

What is the function of geniohyoid

A

elevates and pulls hyoid forward

21
Q

What is the innervation of geniohyoid

A

C1 via CN12

22
Q

What are the suprahyoid muscles

A

mylohyoid
geniohyoid
digastric
stylohyoid

23
Q

What are the infrahyoid muscles

A

sternohyoid
sternothyroid
omohyoid
thyrohyoid

24
Q

What are the attachments of sternohyoid

A

manubrium to hyoid bone

25
Q

What is the function of sternohyoid

A

depress hyoid

26
Q

What is the innervation of sternohyoid

A

C1-C3 via ansa cervicalis

27
Q

What are the attachments of omohyoid

A

superior border of scapula

body of hyoid

28
Q

What is the function of omohyoid

A

depress hyoid bone

29
Q

What is the innervation of omohyoid

A

C1-C3 via ansa cervicalis

30
Q

What are the attachments of sternothyroid

A

manubrium

thyroid cartilage

31
Q

What is the function of sternothyroid

A

depress larynx

32
Q

What is the innervation of sternothyroid

A

C1-C3 via ansa cervicalis

33
Q

What are the attachments of thyrohyoid

A

thyroid cartilage to body of hyoid

34
Q

What is the innervation of thyrohyoid

A

C1 via Cn12

35
Q

What is the function of thyrohyoid

A

depress hyoid; elevate larynx

36
Q

What strap muscle is NOT associated with the hyoid bone

A

sternothyroid

37
Q

What is the action of the sternocleidomastoid muscle

A

Ipsilateral tilt and rotates face to opposite side

38
Q

What is the innervation of SCM

A

CN XI and C2-C3

39
Q

What is the innervation of trapezius

A

CNX1 and C3-C4

40
Q

What is torticollis

A

damage to the sternocleidomastoid or trapezius causing tilting of head

41
Q

What is the innervation of splenius capitis

A

posterior rami of middle cervical nerves

42
Q

What is the function of splenius capitus

A

rotate face towards the same side, draw head backwards

43
Q

What is the innervation of levator scapulae

A

dorsal scapular nerve

44
Q

What muscle acts as an antagonist to SCM

A

splenius capitis

45
Q

What is the innervation of the anterior scalene muscles

A

anterior rami C4-C7

46
Q

What is the innervation of the middle scalene muscles

A

anterior rami C3-C7

47
Q

What is the innervation of the posterior scalene muscles

A

anterior rami C5-C7

LECOM MS1 Gross Anatomy Exam 3 (17 decks)

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