Anatomy 3 Respiratory System Part 2

There are _______ tertiary bronchi for each lung

10

The left lung has ______ lobes which means its has _____ secondary bronchi

2 and 2

The left lung has _________ and _________

2 lobes and 1 fissure

From the trachea to the alveolar ducts there are about ______ orders of branching

25

The diaphragm or phrenic has ____ openings

3

The right lung has _____ lobes which means it has ______ secondary bronchi

3 and 3

The right lung has _________ and ________

3 lobes and 2 fissures

The narrow, superior portion of the lung

Apex of the lung

Why is the right lung shorter and wider?

Because the liver is on that side

This layer of the primary bronchi contains incomplete rings of cartilage

Cartilaginous

Principle muscle of respiration. Dome shaped muscle situated between the thoracic and abdominal cavities

Diaphragm or phrenic

The IVC orifice allows the ________ to pass

IVC

The principal organs of respiration

Lungs

First portion of the bronchial tree. Right primary bronchus goes into the right lung. Left primary bronchus goes into the left lung

Right and left primary bronchi

Shorter and wider due to the fact that the diaphragm is higher on the right side.

Right lung

What is the function of the trachea?

Transports air into the right and left primary bronchi

The aortic orifice allows these four things to pass

aorta, thoracic duct, azygos vein, and hemiazygos vein

The broad, inferior surface of the lung that rests on the diaphragm

base of the lung

The tertiary bronchi divide into

bronchioles

Portion of the lung tissue that the tertiary bronchi supply

bronchopulmonary segment

A concave depression located medially on the left lung in which the heart lies

cardiac notch

The layers of the primary bronchi include

epithelia layer, fibro muscular, and cartilaginous.

This layer of the primary bronchi is pseudo stratified ciliated columnar epithelium

epithelial layer

The esophageal orifice allows these two things to pass

esophagus and vagus nerve

This layer of the primary bronchi has the trachealis muscle and elastic connective tissue to hold open the ends of the cartilage rings

fibro-muscular

Located on the medial surface of each lung is a slight indentation called the

hilum or hilus

The two fissures in the right lung are the

horizontal and oblique

The three orifices of the phrenic are

ivc, esophagus and aortic

The aortic orifice is located

lowest at t12

The IVC orifice is located

most anterior on T8

The fissure on the left lung is the

oblique fissure

There is ______ secondary bronchi for each lobe of the lung

one

The esophagus orifice is located

right of the midline at level t10

Shorter, wider and more vertical than the left. As a result, aspirated objects are more likely to enter and lodge in here

right primary bronchus

Actual structures held together by the pleura and connective tissue

root of the lung

Once inside the lungs, each primary bronchus subdivides into

secondary or lobar bronchi

The two lobes on the left lung are the

superior and inferior lobe

The three lobes in the right lung are the

superior, middle and inferior

The bronchioles branch repeatedly and the smallest bronchioles branch into even smaller tubes called

terminal bronchioles

What is the function of the lungs?

to exchange respiratory gasses between the lungs and the blood via capillaries