Exam III Muscles

Question 1

What muscles have attachments to the scapula?

Answer 1

• Trapezius
• rhomboids
• levator scapulae

Question 2

What muscles have attachments to the occipital bone?

Answer 2

• trapezius
• splenius capitus
• spinalis

Question 3

What muscles have attachments to the vertebra prominens?

Answer 3

• trapezius

- splenius capitus

Question 4

What muscles have attachments to the nuchal ligament?

Answer 4

• trapezius
• spinalis
• splenius capitus

Question 5

What muscles elevate the scapula?

Answer 5

• trapezius
• rhomboids
• levator scapulae

Question 6

What muscles have the action of lateral flexion and extension of the column?

Answer 6

erector spinae muscles

Question 7

trapezius attachments

Answer 7

• clavicle
• scapula (spine & acromion)
• occipital bone
• vertebra prominens
• nuchal ligament

Question 8

trapezius innervation

Answer 8

CN 11

Question 9

Trapezius action

Answer 9

• upper region: elevates and medially rotates scapula

- lower region: depresses scapula

Question 10

Latissimus dorsi attachments

Answer 10

• T6-12 spinous processes
• sacral and lumbar spines by thoracolumbar fascia
• ilium
• humerus

Question 11

Latissimus dorsi innervation

Answer 11

thoracodorsal nerve

Question 12

Latissimus dorsi action

Answer 12

adduction, extension, and medial rotation of arm

Question 13

rhomboid major attachment

Answer 13

• T2-5 spinous processes

- medial scapula

Question 14

rhomboid minor attachment

Answer 14

• C7-T1 spinous processes

- scapula

Question 15

rhomboid minor and major innervation

Answer 15

dorsal scapular nerve

Question 16

rhomboid minor and major action

Answer 16

retraction (adduction) and elevation of scapula

Question 17

levator scapulae attachment

Answer 17

• C1-4 transverse processes

- scapula

Question 18

levator scapulae innervation

Answer 18

• dorsal scapular nerve

- C3-4 ventral rami (cervical plexus)

Question 19

levator scapulae action

Answer 19

• elevation of scapula

- lateral flexion of neck

Question 20

Serratus posterior superior attachment

Answer 20

• C7-T3 spinous processes

- ribs 2-5

Question 21

serratus posterior inferior attachment

Answer 21

• T11-L2

- ribs 9-12

Question 22

Serratus posterior superior innervation

Answer 22

T1-3 intercostal nerves

Question 23

serratus posterior inferior innervation

Answer 23

• T10-11 intercostal nerves

- subcostal nerve (T12 spinal nerve)

Question 24

Serratus posterior superior action

Answer 24

elevation of ribs 2-5

Question 25

serratus posterior inferior action

Answer 25

lowers ribs 9-12

Question 26

iliocostalis attachments

Answer 26

• ribs

- cervical transverse processes

Question 27

iliocostalis innervation

Answer 27

dorsal rami

Question 28

iliocostalis action

Answer 28

lateral flexion and extension of column

Question 29

spinalis attachments

Answer 29

• occipital bone
• nuchal ligament
• spinous processes

Question 30

spinalis innervation

Answer 30

dorsal rami

Question 31

spinalis action

Answer 31

lateral flexion and extension of column

Question 32

longissimus attachments

Answer 32

• ribs
• transverse processes
• iliac crest & sacrum
• spinous processes of sacrum and lumbar vertebrae
• supraspinous ligament

Question 33

longissimus innervation

Answer 33

dorsal rami

Question 34

longissimus action

Answer 34

• lateral flexion and extension of column

- rotation and extension of head

Question 35

splenius capitus attachment

Answer 35

• mastoid bone
• occipital bone
• nuchal ligament
• vertebra prominens
• T1-T3 spinous processes

Question 36

splenius capitus innervation

Answer 36

C3-5 dorsal rami