Bronchus, Bronchioles, Terminal Bronchiole

difference between the left and right primary bronchus

the left primary bronchus is longer angled and more narrow due to the presence of the heart

which side of the lungs and primary bronchi is the more common side for inhaled objects

right

what is the point where the trachea divides

carina

The lungs occupy the entire thoracic cavity except the...

mediastinum

Apex is the narrow, upper portions located deep into the ___.

clavicle

__ is the wide, lower portions located near diaphragm

base

Lobes are formed by deep ___

fissures

Right lung has __ lobes

3

Left lung __ lobes

2

Each lung is covered by...

serous membranes

What are the 2 layers of the lungs

parietal and visceral layer

___ Layer lines the wall of ventral cavity

Parietal

___ Layer lines the outside of the organ

Visceral

___ fluid in between the two layers

Serous Fluid

Function of membranes & fluid

reduce friction as lungs move within the thoracic cavity

inflammation of the pleural membrane is called

Pleurisy

what causes pleurisy

decreased pleural fluid

Symptoms of Pleurisy

Dry, rough, increased friction, very painful

excessive pleural fluid leads to...

Pleural Effusion

Pleural Effusion leads to Increased ___ on lungs

Pressure

Symptoms of pleural effusion

Difficult to breathe, less painful than pleurisy

___ branches of bronchi once inside lungs

Bronchioles

Bronchioles form a network of branching respiratory passageways throughout the lung called...

bronchial tree / respiratory tree

Do all bronchioles have cartilage to reinforce their walls?

All but the very smallest

Terminal bronchioles lead to respiratory zone structures that end at ___

alveoli

Only site of gas exchange

alveoli

what are the respiratory Zone Structures

Respiratory bronchioles

Alveolar ducts/sacs Alveoli

all other respiratory passage structures that serve as conduits to & from the respiratory zone are called the...

Conducting zone structures

Majority of lungs are__

air spaces.

The remaining lung tissue is mainly ___

elastic connective tissue

The elastic connective tissue of the lungs allows for efficient ____ during exhalation.

passive recoil