Thorax And Abdomen

Question 1

What are the 4 muscles involved in respiration?

Answer 1

Sternocleidomastoid
Scalenes
External intercostals
Internal intercostals

Question 2

Origin and insertion of Sternocleidomastoid

Answer 2

O: manubrium and medial portion of clavicle
I: mastoid process of temporal bone

Question 3

Origin and insertion of scalenes

Answer 3

O: transverse processes of cervical vertebrae
I: posterolaterally on ribs 1 and 2

Question 4

Which way do the external intercostals run?

Answer 4

Superior and posterior to inferior and anterior

Question 5

Which way do internal intercostals run?

Answer 5

Superior and anterior to inferior and posterior

Question 6

6 abdominal muscles and 1 fascia

Answer 6

Rectus abdominus 
External oblique 
Internal oblique
Transverse abdominus
Quadratus lumborum 
Psoas major
Thoracolumbar fascia

Question 7

Rectus abdominus

Answer 7

Forms ya 6 pack m8

Question 8

External oblique

Answer 8

Runs superior and posterior to inferior and anterior

Question 9

Internal oblique

Answer 9

Runs superior and anterior to inferior and posterior

Question 10

Transversus abdominus

Answer 10

3rd inner most layer

Question 11

Quadratus lumborum

Answer 11

Iliac crest to transverse process of rib 12

Question 12

Psoas major

Answer 12

Lumbar vertebrae to lesser trochanter (femur)

Question 13

Thoracolumbar fascia

Answer 13

Tough, fibrous Non-contractile tissue that helps to stabilise the back

Question 14

What are the three passages through the diaghram and what passes through them?

Answer 14

Caval foramen - inferior vena cava
Aortic hiatus - descending aorta
Esophageal hiatus - oesophagus