Module 7 Muscles - Back

Question 1

Serratus Posterior Superior - Innervation

Answer 1

T1-T4

Question 2

Serratus Posterior Superior - Origin

Answer 2

Spinous processes of C7-T3

Question 3

Serratus Posterior Superior - Insertion

Answer 3

posterior surfaces of ribs 2-5

Question 4

Serratus Posterior Superior - actions

Answer 4

elevate the ribs during inhalation

Question 5

Serratus Posterior Inferior - Innervation

Answer 5

T9-T12

Question 6

Serratus Posterior Inferior - Origin

Answer 6

Spinous Processes of T12-L3

Question 7

Serratus Posterior Inferior - Insertion

Answer 7

posterior surface of ribs 9-12

Question 8

Serratus Posterior Inferior - actions

Answer 8

depress the ribs during exhalation

Question 9

External intercostals - innervation

Answer 9

thoracic nerve

Question 10

external intercostals - origin

Answer 10

inferior border of the rib above

Question 11

external intercostals - insertion

Answer 11

superior border of the rib below

Question 12

external intercostals - actions

Answer 12

draw the ribs superiorly (increases the space of the thoracic cavity) to assist with inhalation

Question 13

internal intercostals - origin

Answer 13

inferior border of the rib above

Question 14

internal intercostals - innervation

Answer 14

thoracic nerve

Question 15

internal intercostals - insertion

Answer 15

superior border of the rib below

Question 16

internal intercostals - actions

Answer 16

draw the ribs inferiorly (decreasing the space of the thoracic cavity) to assist with exhalation

Question 17

diaphragm - innervation

Answer 17

phrenic nerve from the cervical plexus: C3, C4, C5 (keeps the diaphragm alive)

Question 18

diaphragm - origin

Answer 18

inner surfaces of the the lower 6 ribs,
upper 2 or 3 lumbar vertebrae,
inner part of xiphoid process

Question 19

diaphragm - insertion

Answer 19

central tendon

Question 20

diaphragm - actions

Answer 20

draw down the central tendon of the diaphragm
increase the volume of the thoracic cavity during inhalation

Question 21

rectus abdominis - innervation

Answer 21

T5-T12, ventral rami

Question 22

rectus abdominis - origin

Answer 22

pubic crest
pubic symphysis

Question 23

rectus abdominis - insertion

Answer 23

cartilage of ribs 5-7
xiphoid process

Question 24

rectus abdominis - actions

Answer 24

FLEX the vertebral column
TILT pelvis POSTERIORLY

Question 25

external obliques - innervation

Answer 25

T5-T12

Question 26

external obliques - origin

Answer 26

external surfaces of ribs 5-12

Question 27

external obliques - insertion

Answer 27

anterior part of the iliac crest, rectus sheath to the linea alba

Question 28

external obliques - actions

Answer 28

LATERALLY FLEX vertebral column to same side ROTATE vertebral column to the opposite side FLEX vertebral column COMPRESS abdominal contents

Question 29

internal obliques - innervation

Answer 29

T7-L1, iliohypogastric nerve and the ilioinguinal nerve, ventral divisions

Question 30

internal obliques - origin

Answer 30

lateral inguinal ligament, iliac crest, thoracolumbar fascia

Question 31

internal obliques - insertion

Answer 31

internal surfaces of the lower 3 ribs, rectus sheath to the linea alba

Question 32

internal obliques - actions

Answer 32

FLEX, LATERALLY FLEX, and ROTATE vertebral column to the same side, COMPRESS the abdominal contents

Question 33

transverse abdominis - innervation

Answer 33

T7-12, L1, iliohypogastric nerve and the ilioinguinal nerve, ventral divisions

Question 34

transverse abdominis - origin

Answer 34

lateral inguinal ligament, iliac crest, thoracolumbar fascia, internal surfaces of the lower 6 ribs

Question 35

transverse abdominis - insertion

Answer 35

rectus sheath to the linea alba

Question 36

transverse abdominis - actions

Answer 36

COMPRESS abdominal contents

Question 37

Semispinalis Capitis - innervation

Answer 37

cervical nerve

Question 38

Semispinalis Capitis - Origin

Answer 38

TVPs of C4-T5

Question 39

Semispinalis Capitis - Insertion

Answer 39

between the superior and inferior lines of the occiput

Question 40

Semispinalis Capitis - actions

Answer 40

EXTEND head and vertebral column