Week 2

Question 1

function of thoracic walls?

Answer 1

protection and respiration

Question 2

elements of thorax

Answer 2

ribs and costal cartilage, all thoracic vertebrae and IV discs, sternum

Question 3

examples of atypical ribs

Answer 3

1st - shorter and flatter
2nd - thinner and longer than 1st, has rough surface for serratus ant.
11th and 12th - shorter, floating, no costal cartilage, no tubercle

Question 4

rectus abdominis muscle

Answer 4

xiphoid process and 5-7 costal cartilage - pubic symphisis and pubic crest
thorocoabdominal nerve

Question 5

external oblique

Answer 5

exterior surface ribs 5-12 - linea alba, pubic tubercle, anterior iliac crest and lateral inguinal ligament
thoracoabdominal nerve

Question 6

internal oblique

Answer 6

thoracolumbar fascia, anterior iliac crest, lateral inguinal ligament - pecten pubis via conjoint tendon, linea alba and inferior border ribs 10-12
thorocoabdominal nerve and 1st lumbar nerve

Question 7

transverse abdominis

Answer 7

lateral inguinal ligament, inner anterior iliac crest, thorocolumbar fascia, lower 6 costal cartilage - linea alba, pubic crest, aponeurosis of internal oblique, pecten pubis via conjoint tendon
thorocoabdominal nerve and 1st lumbar nerve