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A + P 1 Before Midterm > Muscles of the Anterior of the Neck > Flashcards

Muscles of the Anterior of the Neck Flashcards

1
Q

What is the landmark of the neck region?

A

sternocleidomastoid

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2
Q

The anterior region of the neck is divided into what by the SCM?

A

two triangles, anterior and posterior

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3
Q

What do muscles of the anterior of the neck assist in?

A

deglutition and speech

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4
Q

What is deglutition

A

swallowing

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5
Q

What are the muscle groups in relation to the hyoid bone?

A

suprahyoid

infrahyoid

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6
Q

When the suprahyoid and infrahyoid muscles act together what happens?

A

both groups acting together stabilize the hyoid bone for the muscles attaching there to act

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7
Q

What do the suprahyoid muscles form?

A

the floor of the mouth

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8
Q

What are the common actions of suprahyoid muscles?

A

elevate they hyoid bone, the floor of the mouth and the tongue when swallowing

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9
Q

How many suprahyoid muscles are there? What are they?

A

4:

  1. digastric
  2. stylohyoid
  3. mylohyoid
  4. geniohyoid
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10
Q

What muscles actively depress the mandible when we need to open our mouth wider?

A

suprahyoid

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11
Q

What is the origin of the stylohyoid muscle

A

styloid process of temporal bone

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12
Q

What is the insertion of the stylohyoid

A

body of hyoid

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13
Q

What are the actions of the stylohyoid

A

elevates and pulls back the hyoid bone during swallowing (draws it posteriorly)

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14
Q

What nerve innervates the stylohyoid

A

facial nerve

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15
Q

The tendon of the digastric muscles passes through what muscle?

A

stylohyoid

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16
Q

What is the origin of the mylohyoid

A

inner surface of mandible

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17
Q

What is the insertion of the mylohyoid

A

hyoid bone

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18
Q

What are the actions of the mylohyoid

A

elevates hyoid, floor of mouth and depresses mandible

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19
Q

What nerve innervates the mylohyoid

A

mandibular division of trigeminal nerve

20
Q

The two muscles that are united by a raphe in the midline and insert in the mandible is what muscle?

21
Q

What muscle is superior to the mylohyoid

A

geniohyoid

22
Q

What is the origin of the geniohyoid

A

posterior aspect of the chin from genial tubercles (mental spines)

23
Q

What is the insertion of the geniohyoid

A

body of hyoid

24
Q

What are the actions of the geniohyoid

A

elevates hyoid, draws hyoid and tongue anteriorly

25
Q

What nerve innervates the geniohyoid

A

first cervical spinal nerve

26
Q

What is the RMA of geniohyoid

A

depresses mandible

27
Q

What do infrahyoid muscles look like?

A

ribbons or straps to hyoid

28
Q

What are common actions of infrahyoid muscles?

A

depresses the hyoid bone and move the larynx when swallowing and talking

29
Q

How many infrahyoid muscles are there? What are they?

A 
4:
omohyoid
sternohyoid
sternothyroid 
thyrohyoid
30
Q

The omohyoid is composed of what?

A

two bellies (superior and inferior) connected by an intermediate tendon

31
Q

What is the origin of the omohyoid?

A

superior border of scapula and superior transverse ligament

32
Q

What is the insertion of the omohyoid

A

body of hyoid

33
Q

What are the actions of omohyoid

A

depresses hyoid

34
Q

What nerve innervates the omohyoid

A

branches of spinal nerves C1-C3

35
Q

What is the origin of the sternohyoid

A

manubrium of sternum and medial clavicle

36
Q

What is the insertion of the sternohyoid

A

bbody of hyoid

37
Q

What are the actions of the sternohyoid

A

depresses hyoid

38
Q

What nerve innervates the sternohyoid

A

branches of spinal nerves C1-C3

39
Q

What is the origin of the sternothyroid

A

manubrium of sternum

40
Q

what is the insertion of the sternothyroid

A

thyroid cartilage of larynx

41
Q

What are the actions of the sternothyroid

A

depresses thyroid cartilage of larynx

42
Q

What is the innervation of sternothyroid

A

branches of spinal nerves C1-C3

43
Q

What is the origin of thyrohyoid

A

thyroid cartilage of larynx

44
Q

What is the insertion of thyrohyoid

A

greater horn of hyoid

45
Q

What are the actions of thyrohyoid

A

depresses hyoid

46
Q

What is the innervation of thyrohyoid

A

branches of spinal nerves of C1-C2 and descending hypoglossal nerve

47
Q

What is the RMA of thyrohyoid

A

elevates thyroid cartilage to produce high sounds

A + P 1 Before Midterm (25 decks)

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