Intermediate Muscles

Question 1

Intermediate Muscles of the Back and Neck

Answer 1

Erector Spinae Group:

Iliocostalis (most lateral)
Longissimus (medial)
Spinalis (medial)

Question 2

Iliocostalis

Answer 2

iliocostalis lumborum

iliocostalis thoracis

iliocostalis cervics

Question 3

Longissimus

Answer 3

longissimus thoracis

longissimus cervics

longissimus capitis

Question 4

Spinalis

Answer 4

spinalis thoracic

spenius capitus

splenius cervics

levitator scapulae

serratus posterior

Question 5

iliocostalis lumborum

Answer 5

origin at the iliac crest via the lumbar aporneorisi

inserts on the lower ribs

action: lateral flexion

Question 6

iliocostalis thoracis

Answer 6

origin at the lower ribs

inserts to upper six ribs

Question 7

iliocostalis cervics

Answer 7

runs along the upper six ribs to the transverse processes of the lower cervical

Question 8

longissimus thoracis

Answer 8

origin from the lumbar transverse processes

inserts to the thoracic transverse processes and back to the 9th and 10th ribs

Question 9

longissimus cervics

Answer 9

form the transverse processes of the upper thoracic vertebrae to those of C2-C6

Question 10

longissimus capitis

Answer 10

form the transverse processes of the upper thoracic and the lower cervical

inserts on the mastoid process

Question 11

spinalis thoracic

Answer 11

origin form the spinous processes of the upper lumbar and lower thoracic

insert on those of the upper thoracic

action: extension

Question 12

spenius capitus

Answer 12

orgin at the spinous process of the C7 through the T6

inserts to the mastoid process of the temporal bone and adjacent occipital bone

Question 13

splenius cervics

Answer 13

form the spinous process of T5-T7 to the transverse process of C1-C3

action: bilateral contraction
extension of head and cervical spine

action: unilateral

Question 14

levitator scapulae

Answer 14

from the transverse processes of the C1-C4 to the medial scapula

Question 15

serratus posterior

Answer 15

flat muscles, which assist in respiration
elevates the ribs in inhalation and depresses the ribs in exhalation

form the spinous process of C7 and T1-3 to the back surfaces of the 2nd -5ht ribs

Question 16

Primary Actors in Shoulder Joint

Answer 16

Rhomboids
Latissimus Dorsi
Trapezius

Question 17

Rhomboids (major and minor)

Answer 17

attach to the spinous processes of the C7 and T1-5

insert on the sides of the scapulae

Question 18

Latissimus dorsi

Answer 18

origin form the T7 to the sacrum

inserts on the humerus

-helps preserve the structural integrity of the trunk during movements

Question 19

Trapezius

Answer 19

origin extending from the occiput to the spinous process of all cervical and thoracic vertebrae

inserts on the upper scapula and clavicle