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Structure and Function Test 1 > Muscles > Flashcards

Flashcards in Muscles Deck (49):
1

Where does the Platysma attach?

Skin over the mandible, neck, and clavicle

2

What is the action of the Platysma?

Wrinkle the skin of the neck

3

The Platysma is innervated by the

Facial nerve

4

What are the PROXIMAL attachments of the trap?

Spinous processes and base of skul

5

What are the DISTAL attachments of the trap?

Spine of scapula, acromion process, and clavicle

6

What is the general action of the trapezius

Scapular movement

7

What are the DISTAL attachments of the sternocleidomastoid?

Manubrium of sternum and clavicle

8

What is the PROXIMAL attachment of the sternocleidomastoid?

Mastoid process

9

What is the UNILATERAL action of the sternocleidomastoid?

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

10

What is the BILATERAL function of the sternocleidomastoid>

Flexion of the neck

11

The trapezius AND sternocleidomastoid are BOTH innervated by the

Accessory nerve

12

Where do the longus capitus and longus coli attach?

Vertebral bodies and transverse processes

13

Where do the semispinalis and splenius capitus attach?

Vertebral spinous and transverse processes and the skull

14

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

Transverse processes and Ribs

15

Where does the levator scapulae attach?

Transverse processes and Scapula

16

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

Head and neck flexion

17

What are the actions of the semispinalis and splenius capitus?

HEad and neck extension

18

What are the actions of the Scalenes and the levator scapulae

Lateral bending of the head and neck

19

The longus coli and longus capitus are innervated by the

Ventral rami of cervical spinal nerves

20

The semispinalis and splenius capitus are innervated by the

Dorsal rami of cervical spinal nerves

21

The scalenes are innervated by

Ventral rami of cervical spinal nerves

22

The levator scapulae is innervated by the

Dorsal scapular nerve

23

The stylohyoid ataches to the

Styloid process and hyoid

24

The posterior belly of the digastric attaches to the

Mastoid process and hyoid

25

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

Hyoid and mandible

26

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

Facial nerve (CN VII)

27

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

Nerve to mylohyoid (from inferior alverolar branch of V3)

28

The geniohyoid is innervated by the

C1 ventral Ramus

29

The omohyoid attaches to the

Scapula and Hyoid

30

The sternohyoid attaches to the

Sternum and hyoid

31

The sternothyroid attaches to the

Sternum and thyroid cartilage

32

The thyrohyoid attached to the

Thyroid cartilage and hyoid

33

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

Ansa cervicalis

34

The thyrohyoid is innervated by the

C1 ventral ramus

35

What is the PROXIMAL attachment of the temporalis?

Temporal fossa

36

What is the DISTAL attachment of the temporalis?

Coronoid process of the mandible

37

What is the PROXIMAL attachment of the masseter?

Zygomatic Arch

38

What is the DISTAL attachment of the masseter?

Lateral surface of the mandible

39

What is the PROXIMAL attachment of the lateral pterygoid?

Sphenoid (greater wing and lateral pterygoid plate)

40

What is the DISTAL attachment of the lateral pterygoid?

TMJ capsule and condylar neck of mandible

41

What is the PROXIMAL attachment of the medial pterygoid?

medial pterygoid plate of sphenoid, palatine bone, maxilla

42

What is the DISTAL attachment of the medial pterygoid?

medial surface of mandible (inferior to mandibular foramen)

43

What is the ACTION of the temporalis?

Elevation and retrusion of jaw

44

What is the ACTION of the masseter?

Elevation and protrustion of mandible

45

What is the BILATERAL ACTION of the lateral pterygoid?

Protrusion and depression of mandible

46

What is the UNILATERAL ACTION of the lateral pterygoid?

Swings jae to contralateral side

47

What is the ACTION of the medial pterygoid?

Elevation of mandible and assiting lteral pterygoid in protrusion with grinding

48

The lateral pterygoid runs

Horizontally

49

The medial pterygoid runs

Vertically (mirrors masseter)

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