3.1 Lungs

Question 1

Identify the Phrenic nerve. From where does it originate?

Name 2 things it innervates related to the thoracic cavity/lungs.

Answer 1

Originates C3-C5. Innervates diaphragm as well as mediastinal and diaphragmatic portions of parietal pleura

Question 2

Locate the Pericardiophrenic artery. From where does it branch.

Answer 2

It is a branch of the internal thoracic artery.

Question 3

Identify the Vagus nerve and its origin. Name 1 thing it innervates related to the lungs.

Answer 3

CN X. Parasympathetic innervation of visceral pleura

Question 4

Identify the Left and right bronchial arteries and their function. From where do they branch?

Answer 4

Supply lungs with oxygenated blood.

Typically arise from the thoracic aorta (variation especially in right bronchial artery)

Question 5

Recall and locate basic Lung anatomy/surfaces.

Answer 5

apex, base, diaphragmatic surface, costal surface, mediastinal surface, anterior border, posterior border, inferior border

Question 6

Describe and locate Right lung anatomical features

Answer 6

Superior, middle, inferior lobes.
Horizontal fissure, oblique fissure
Azygos vein impresson

Question 7

Describe and locate Left lung anatomical features

Answer 7

Superior, inferior lobes.
oblique fissure
lingula
cardiac notch
cardiac impression
aortic impression
impression for the aortic arch

Question 8

Identify the Hilum and what it consists of.

Answer 8

bronchi
pulmonary arteries and veins
pulmonary ligament (extension of parietal pleura - helps hold lower lungs in place).