Shapes and Spaces

Question 1

posterior triangle of the neck !!!

Answer 1

+ anterior border: posterior border of the SCM
+ posterior border: anterior border of the upper trapezius
+ roof: platysma
+ floor: anterior/middle/posterior scalenes levator scapulae, splenius capitis
+ contents:
+ EJV
+ root of cervical plexus (anterior rami of C1-C4)
+ subclavian artery and vein
+ suprascapular artery
+ transverse cervical artery

Question 2

suboccipital triangle

Answer 2

+ medial border: rectus capitus posterior major
+ inferior border: obliquus capitis inferior
+ lateral border: obliquus capitis superior
+ roof: semispinalis capitis
+ contents: suboccipital nerve (posterior ramus of C1) and the vertebral artery

Question 3

cervicoaxillary canal

Answer 3

+ anterior border: clavicle
+ medial border: first rib
+ posterior border: superior border of scapula

Question 4

triceps hiatus

Answer 4

+ profunda brachii artery

+ radial nerve

Question 5

quadrangular space

Answer 5

+ posterior circumflex humeral artery

Question 6

triangular space

Answer 6

+

Question 7

triceps hiatus

Answer 7

+

Question 8

scalene triangle

Answer 8

\+ anterior border: anterior scalene
\+ posterior border: middle scalene
\+ inferior border: clavicle
\+ contents: 
   \+ roots of brachial plexus (anterior rami of C5-T1)
   \+ subclavian artery

Question 9

axilla

Answer 9

\+ anterior wall:
\+ posterior wall:
\+ medial wall:
\+ lateral wall:
\+ base:
\+ apex: