ANTERIOR LUNGS Flashcards
Both bronchi are at an oblique position in the mediastinum and enter the lungs at
Hilum
The r bronchus is —– and —– than left bronchus
Shorter more vertical easy to aspirate
“dead space”
Bronchi and trachea
Dead space meaning
Air is transported but no gas exchange
the bronchioles terminate at the —- and air is channeled into the ——-
Alveolar ducts , sacs
contain a number of
alveoli in a cluster formation (resembling grapes), creating millions of interalveolar walls
that increase the surface area available for gas exchange.
Alveolarsacs
two cone-shaped, elastic structures suspended within the thoracic cavity.
Lungs
The — of each lungs extends slightly above —
apex- clavicle
anterior surface of the thorax, the
lung extends —–
Laterally, lung tissue reaches the level of the
—–
posteriorly, the lung base lies at about the —–
6, 8, 10
Lungs are divided by
Fissure
The thoracic cavity is lined by a thin, double-layered serous membrane referred to as
pleura
lies between the two pleural layers. In
the healthy adult, the lubricating serous fluid between the layers allows movement of the
visceral layer over the parietal layer during ventilation without friction.
Pleural space
Severe dehydration is pleural space = 3
Friction rub, increased lung sound, reduce volume of pleural fluid
respiration assists in the
rapid compensation for
Metabolic acid base defects
mechanical act of breathing and is
accomplished by expansion of the chest, both vertically and horizontally.
External respiration, or ventilation
ELEVATION OF RIBS
HORIZONTAL EXPANSION
CONTRACTION OF DIAPHRAGM
VERTICAL EXPANSION
Such involuntary control of respiration is the work of the
MEDULLA AND PONS
also play a role in involuntary control of respiration in response to emotional changes, such
as fear or excitement.
hypothalamus and the sympathetic nervous
changes in oxygen or carbon dioxide levels in the blood, or
changes in the hydrogen ion (pH) level cause changes in breathing patterns.
Hormonal regulation
the strongest stimulus to breathe is an increase in carbon dioxide level in the
blood
Hypercapnia
A decrease in oxygen
Hypoxemia
5As
(Ask, Advise, Assess, Assist,
Arrange)
COLDSPA IN LUNGS REVIEW IN BOOK PLEASE