Respiratory System

Question 1

Describe surface markings of the right lung and how it is divided into lobes

Answer 1

(1. ) Inferior border of the lung:
- 6th rib at midclavicular line
- 8th rib at midaxillary line
- 10th rib on posterior aspect

(2. ) Horizontal fissure separates superior and middle lobe
(3. ) Oblique fissure separates middle and inferior lobe

Question 2

What nerve supplies the diaphragm?

Answer 2

Phrenic nerve

Question 3

What does the phrenic nerve supply? Nerve roots?

Answer 3

(1. ) Nerve roots = C3, C4 and C5.
(2. ) Motor = diaphragm.
(3. ) Sensory = central part of the diaPhragm, Pericardium, Parietal Pleura, Peritoneum remember the 4 P’s