The Lungs

Question 1

The lungs are 2 organs separated by the _________ and other structures in the mediastinum.

Answer 1

HEART

Question 2

The mediastinum is a region in the thoracic cavity between the ________.

Answer 2

LUNGS

Question 3

The mediastinum extends from the __________ to the vertebrae, and from the 1st rib to the clavicle.

Answer 3

STERNUM

Question 4

The top of the lungs is considered what?

Answer 4

THE APEX

Question 5

The bottom of the lungs is considered what?

Answer 5

THE BASE

Question 6

Within the lungs, each bronchus subdivides into which 4 smaller and smaller units?

Answer 6

SECONDARY BRONCHI (2, 3)
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TERTIARY BRONCHI
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BRONCHIOLES
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TERMINAL BRONCHIOLES

Question 7

There are ______ secondary bronchi on the right, and _____ on the left.

Answer 7

3 RIGHT

2 LEFT

Question 8

Smooth muscle of the lungs _____________, cartilage decreases.

Answer 8

INCREASES

Question 9

The terminal bronchioles divide further and further until you get what?

Answer 9

ALVEOLI

Question 10

Alveoli is where most _______ exchange happens.

Answer 10

GAS

Question 11

What is the name for the structure of the lung which is a cup-shaped outpoaching lined with simple squamous epithelium supported by a thin elastic basement membrane?

Answer 11

ALVEOLI

Question 12

2 or more alveoli which share a common opening is known as what?

Answer 12

ALVEOLAR SAC