Lungs

Question 1

What is the blood supply to the diaphragm?

Answer 1

• Branches of the internal thoracic artery

- thoracic aorta

Question 2

What is the nervous supply to the diaphragm?

Answer 2

• Motor: Phrenic nerve

- Sensory: Phrenic, intercostal, subcostal nerves

Question 3

What thorax accessory muscles are involved in inspiration?

Answer 3

• Pectoralis major/minor
• Serratus anterior
• scalene
• sternocleidomastoid
• external intercostal

Question 4

What thorax accessory muscles are involved in expiration?

Answer 4

• internal intercostal
• innermost intercostal
• abdominal muscles

Question 5

What nerve roots innervate the diaphragm?

Answer 5

-C3-C5

Question 6

Are inspirated items found more often in the right or left bronchus? Why?

Answer 6

-Right because it’s straighter

Question 7

What makes up the tracheobronchial tree?

Answer 7

• trachea
• main bronchi
• lobar bronchi
• segmental bronchi

Question 8

What are the largest subdivisions of alobecalled?

Answer 8

-Bronchopulmonary segments

Question 9

What is the hilum of the lung?

Answer 9

• the meeting place of the mediastinum and the pleura

- entry point of pulmonary arteries, veins, and bronchi

Question 10

What is a pulmonary infarct?

Answer 10

-a medium sized embolus that blocks a bronchopulmonary segment resulting in necrotic lung tissue

Question 11

What do the bronchiole arteries do?

Answer 11

-supply blood to the structures in the hilum and tissue of the lung

Question 12

Describe the flow of lymph in the lungs

Answer 12

Bronchomediastinal trunks–>tracheobronchial nodes–>Deep plexus–>Superficial plexus