Surface Anatomy

Question 1

Chest drain

Answer 1

5th intercostal space (just above rib 6) in midaxillary line

Question 2

Anterior axillary fold

Answer 2

Lateral edge of the pectoralis major muscle

- Anterior axillary line

Question 3

Posterior axillary fold

Answer 3

Lateral edge of the latissimus dorsi and teres major muscles

- Posterior axillary line

Question 4

Midaxillary line

Answer 4

Coronal line on the torso between anterior and posterior axillary lines

• V6 electrode
• Thoracentesis

Question 5

Pleura

Answer 5

2,4,6,8,10,12

• Midpoint of medial 1/3 of clavicle
• Rib 2: Meet in midline
• Left diverges at rib 4
• Right diverges at rib 6
• Rib 8: midclavicular
• Rib 10: midaxillary
• Rib 12: midscapular

Question 6

Lungs

Answer 6

Extend to 2 less than pleura below rib 6
Posterior: C7-T10
- Rib 6: midclavicular 
- Rib 8: midaxillary 
- Rib 10: midscapular

Question 7

Fissures

Answer 7

• Oblique: 6th rib

- Horizontal: 4th rib

Question 8

Pleural aspiration

Answer 8

9th IC space, midaxillary line

Question 9

Pericardial aspiration

Answer 9

5th IC space close to sternal margin

Question 10

Dermatome

Answer 10

An area of skin that is mainly supplied by a single spinal nerve

Question 11

Dermatomal distribution of chest wall

Answer 11

• Correspond with intercostal spaces

Question 12

Supraclavicular nerves (cervical nerves)

Answer 12

C5,6,7, 8 and T1 - brachial plexus

Question 13

Sternal angle

Answer 13

T2

Question 14

Nipples

Answer 14

T4

Question 15

Xiphoid process

Answer 15

T6

Question 16

Costal margin

Answer 16

T8

Question 17

Umbilicus

Answer 17

T10

Question 18

Anterior iliac spine

Answer 18

Below T12

Question 19

Inguinal region

Answer 19

L1

Question 20

Hyoid

Answer 20

C2/3

Question 21

Thyrohyoid membrane

Answer 21

C4

Question 22

Laryngeal prominence

Answer 22

C5

Question 23

Cricoid cartilage and continuation of trachea

Answer 23

C6