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Structure and Function Test 1 > Muscles > Flashcards

Flashcards in Muscles Deck (49)
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1
Q

Where does the Platysma attach?

A

Skin over the mandible, neck, and clavicle

2
Q

What is the action of the Platysma?

A

Wrinkle the skin of the neck

3
Q

The Platysma is innervated by the

A

Facial nerve

4
Q

What are the PROXIMAL attachments of the trap?

A

Spinous processes and base of skul

5
Q

What are the DISTAL attachments of the trap?

A

Spine of scapula, acromion process, and clavicle

6
Q

What is the general action of the trapezius

A

Scapular movement

7
Q

What are the DISTAL attachments of the sternocleidomastoid?

A

Manubrium of sternum and clavicle

8
Q

What is the PROXIMAL attachment of the sternocleidomastoid?

A

Mastoid process

9
Q

What is the UNILATERAL action of the sternocleidomastoid?

A

Rotation of the head to the opposite side and movement of ear towards shoulder

10
Q

What is the BILATERAL function of the sternocleidomastoid>

A

Flexion of the neck

11
Q

The trapezius AND sternocleidomastoid are BOTH innervated by the

A

Accessory nerve

12
Q

Where do the longus capitus and longus coli attach?

A

Vertebral bodies and transverse processes

13
Q

Where do the semispinalis and splenius capitus attach?

A

Vertebral spinous and transverse processes and the skull

14
Q

Where do the anterior, middle, and posterior scalenes attach?

A

Transverse processes and Ribs

15
Q

Where does the levator scapulae attach?

A

Transverse processes and Scapula

16
Q

What is the action of the longus capitus and longus coli?

A

Head and neck flexion

17
Q

What are the actions of the semispinalis and splenius capitus?

A

HEad and neck extension

18
Q

What are the actions of the Scalenes and the levator scapulae

A

Lateral bending of the head and neck

19
Q

The longus coli and longus capitus are innervated by the

A

Ventral rami of cervical spinal nerves

20
Q

The semispinalis and splenius capitus are innervated by the

A

Dorsal rami of cervical spinal nerves

21
Q

The scalenes are innervated by

A

Ventral rami of cervical spinal nerves

22
Q

The levator scapulae is innervated by the

A

Dorsal scapular nerve

23
Q

The stylohyoid ataches to the

A

Styloid process and hyoid

24
Q

The posterior belly of the digastric attaches to the

A

Mastoid process and hyoid

25
Q

The anterior belly of the digastric, mylohyoid, AND geniohyoid ALL attach to the

A

Hyoid and mandible

26
Q

The stylohyoid and posterior belly of the digastric are BOTH innervated by the

A

Facial nerve (CN VII)

27
Q

The anterior belly of the digastric and mylohyoid are BOTH innervated by the

A

Nerve to mylohyoid (from inferior alverolar branch of V3)

28
Q

The geniohyoid is innervated by the

A

C1 ventral Ramus

29
Q

The omohyoid attaches to the

A

Scapula and Hyoid

30
Q

The sternohyoid attaches to the

A

Sternum and hyoid

31
Q

The sternothyroid attaches to the

A

Sternum and thyroid cartilage

32
Q

The thyrohyoid attached to the

A

Thyroid cartilage and hyoid

33
Q

The omohyoid, sternohyoid, AND sternothyroid are ALL innervated by the

A

Ansa cervicalis

34
Q

The thyrohyoid is innervated by the

A

C1 ventral ramus

35
Q

What is the PROXIMAL attachment of the temporalis?

A

Temporal fossa

36
Q

What is the DISTAL attachment of the temporalis?

A

Coronoid process of the mandible

37
Q

What is the PROXIMAL attachment of the masseter?

A

Zygomatic Arch

38
Q

What is the DISTAL attachment of the masseter?

A

Lateral surface of the mandible

39
Q

What is the PROXIMAL attachment of the lateral pterygoid?

A

Sphenoid (greater wing and lateral pterygoid plate)

40
Q

What is the DISTAL attachment of the lateral pterygoid?

A

TMJ capsule and condylar neck of mandible

41
Q

What is the PROXIMAL attachment of the medial pterygoid?

A

medial pterygoid plate of sphenoid, palatine bone, maxilla

42
Q

What is the DISTAL attachment of the medial pterygoid?

A

medial surface of mandible (inferior to mandibular foramen)

43
Q

What is the ACTION of the temporalis?

A

Elevation and retrusion of jaw

44
Q

What is the ACTION of the masseter?

A

Elevation and protrustion of mandible

45
Q

What is the BILATERAL ACTION of the lateral pterygoid?

A

Protrusion and depression of mandible

46
Q

What is the UNILATERAL ACTION of the lateral pterygoid?

A

Swings jae to contralateral side

47
Q

What is the ACTION of the medial pterygoid?

A

Elevation of mandible and assiting lteral pterygoid in protrusion with grinding

48
Q

The lateral pterygoid runs

A

Horizontally

49
Q

The medial pterygoid runs

A

Vertically (mirrors masseter)

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