Lab 6: Abdominal/ Thorax

Question 1

Diaphragm

Origin

Answer 1

• Xiphoid process
• Lower costal cartilages
• Upper lumbar vertebrae
• Medial and lateral arcuate ligaments

Question 2

Diaphragm

Insertion

Answer 2

• Central tendon of diaphragm

Question 3

Diaphragm

Action

Answer 3

• Expands thorax during inspiration

Question 4

Diaphragm

Nerve Supply

Answer 4

• Phrenic nerve

Question 5

Rectus Abdominus

Origin

Answer 5

• Pubic symphysis and crest

Question 6

Rectus Abdominus

Insertion

Answer 6

• Costal cartilages of ribs 5-7

- Xiphoid process

Question 7

Rectus Abdominus

Action

Answer 7

• Flexes vertebral column

- Compresses abdomen

Question 8

Rectus Abdominus

Nerve Supply

Answer 8

• Intercostal nerves T7-T12

Question 9

External Abdominal Oblique

Origin

Answer 9

• Lower 8 ribs

Question 10

External Abdominal Oblique

Insertion

Answer 10

• Abdominal aponeurosis to linea alba
• Pubis
• Anterior Iliac Crest

Question 11

External Abdominal Oblique

Action

Answer 11

• Flexes vertebral column and compresses abdomen

- Ipsilateral flexion and contralateral rotation of vertebral column

Question 12

External Abdominal Oblique

Nerve Supply

Answer 12

• Intercostal nerves T7-T12

- Iliohypogastric and ilioinguinal nerves

Question 13

Internal Abdominal Oblique

Origin

Answer 13

• Inguinal ligament
• Iliac crest
• Thoracolumbar aponeurosis

Question 14

Internal Abdominal Oblique

Insertion

Answer 14

• Costal cartilages of lower ribs

- Abdominal aponeurosis to linea alba

Question 15

Internal Abdominal Oblique

Action

Answer 15

• Flexes vertebral column and compresses abdomen

- Ipsilateral flexion and rotation of vertebral column

Question 16

Internal Abdominal Oblique

Nerve Supply

Answer 16

• Intercostal nerves T8-T12

- Iliohypogastric and ilioinguinal nerves

Question 17

Transverse Abdominus

Origin

Answer 17

• Inguinal ligament
• Iliac crest
• Thoracolumbar aponeurosis
• Costal cartilage of ribs 7-12

Question 18

Transverse Abdominus

Insertion

Answer 18

• Abdominal aponeurosis to linea alba

- Pubis

Question 19

Transverse Abdominus

Action

Answer 19

• Compresses abdomen

Question 20

Transverse Abdominus

Nerve Supply

Answer 20

• Intercostal nerves T7-T12

- Iliohypogastric and ilioinguinal nerves

Question 21

Quadratus Lumborum

Origin

Answer 21

• Iliac crest

Question 22

Quadratus Lumborum

Insertion

Answer 22

• 12th rib

- Transverse processes L1-4

Question 23

Quadratus Lumborum

Action

Answer 23

• Lateral flexion of vertebral column

- Elevates hip

Question 24

Quadratus Lumborum

Nerve Supply

Answer 24

• Ventral rami T12-L4

Question 25

Iliacus Origin

Answer 25

- Iliac fossa

Question 26

Iliacus Insertion

Answer 26

- Lesser trochanter of femur

Question 27

Iliacus Action

Answer 27

- Flexion of hip | - Flexion of lumbar vertebral column

Question 28

Iliacus Nerve Supply

Answer 28

- Femoral nerves

Question 29

Psoas Major Origin

Answer 29

- T12-L5 vertebral bodies and discs | - L1-5 transverse processes

Question 30

Psoas Major Insertion

Answer 30

- Lesser trochanter of femur

Question 31

Psoas Major Action

Answer 31

- Flexion of hip | - Flexion of lumbar vertebral column

Question 32

Psoas Major Nerve Supply

Answer 32

- Spinal nerves L2-3

Question 33

Psoas Minor Origin

Answer 33

- Vertebral body of T12-L1

Question 34

Psoas Minor Insertion

Answer 34

- Superior ramus of pubis

Question 35

Psoas Minor Action

Answer 35

- Flexion of lumbar vertebral column

Question 36

Psoas Minor Nerve Supply

Answer 36

- Spinal nerves L1