Muscles Of Neck And Vertebral Column

Question 0

Insertion of sternocleidomastoid

Answer 0

Mastoid process of temporal bone and superior nuchal line of occipital bone

Question 1

Origin of sternocleidomastoid

Answer 1

Manubrium of sternum and medial portion of clavicle

Question 2

Action of sternocleidomastoid

Answer 2

Flexes and laterally rotates the head

Question 3

Innervation of sternocleidomastoid

Answer 3

Accessory nerve and cervical spinal nerves c2 and c3

Question 4

Origin of scalenes

Answer 4

Transverse process of cervical vertebrae

Question 5

Insertion of scalenes

Answer 5

Anterolaterally on first two ribs

Question 6

Action of scalenes

Answer 6

Elevates first two ribs

Question 7

Innervation of scalenes

Answer 7

Cervical spinal nerves

Question 8

Origin of splenius

Answer 8

Ligamentum nuchae; spinous processes of vertebrae c7-t6

Question 9

Insertion of splenius

Answer 9

Mastoid process of temporal bone and occipital bone (capitis); transverse processes of c2-c4 vertebrae (cervicis)

Question 10

Action of splenius

Answer 10

Extend the head

Question 11

Innervation of splenius

Answer 11

Cervical spinal nerves (dorsal rami)

Question 12

Origin of iliocostalis

Answer 12

Iliac crest (lumborum); inferior 6 ribs (thoracis); ribs 3-6 (cervicis)

Question 13

Insertion of iliocostalis

Answer 13

Angles of ribs (lumborum and thoracis); transverse processes of cervical vertebrae c6-c4 (cervicis)

Question 14

Action of iliocostalis

Answer 14

Extend and laterally flex vertebral column

Question 15

Innervation of iliocostalis

Answer 15

Spinal nerves (dorsal rami)

Question 16

Origin of longissimus

Answer 16

Transverse processes of lumbar through cervical vertebrae

Question 17

Insertion of longissimus

Answer 17

Transverse processes of thoracic or cervical vertebrae and to ribs superior to origin as indicated by name; capitis inserts into mastoid process of temporal bone

Question 18

Action of longissimus

Answer 18

Extend and laterally flex vertebral column; extends head and turns the face toward same side

Question 19

Innervation of longissimus

Answer 19

Spinal nerves (dorsal rami)

Question 20

Origin of spinalis

Answer 20

Spines of upper lumbar and lower thoracic vertebrae

Question 21

Insertion of spinalis

Answer 21

Spines of upper thoracic and cervical vertebrae

Question 22

Action of spinalis

Answer 22

Extends vertebral column

Question 23

Innervation of spinalis

Answer 23

Spinal nerves (dorsal rami)

Question 24

Origin of semispinalis

Answer 24

Transverse processes of c7-t12

Question 25

Insertion of semispinalis

Answer 25

Occipital bone (capitis) and spinous processes of cervical (cervicis) and thoracic vertebrae t1 to t4 (thoracis)

Question 26

Action of semispinalis

Answer 26

Extends vertebral column and head and rotates them to opposite side

Question 27

Innervation of semispinalis

Answer 27

Spinal nerves (dorsal rami)

Question 28

Origin of quadratus lumborum

Answer 28

Iliac crest and lumbar fascia

Question 29

Insertion of quadratus lumborum

Answer 29

Transverse processes of upper lumbar vertebrae and lower margin of 12th rib

Question 30

Action of quadratus lumborum

Answer 30

Flexes vertebral column laterally

Question 31

Innervation of quadratus lumborum

Answer 31

T12 and upper lumbar spinal nerves