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Respiratory System Lecture
Details about Respiratory System
70
Anatomy
Undergraduate 2
03/29/2011

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Term
All the cells in the body produce CO2 by..
Definition
Cellular Respiration
Term
Pulmonary Ventilation
Definition
process of moving air in/out of the lungs
Term
Pulmonary Respiration
Definition
reciprocal exchange of gases in the lungs
Term
Cellular Respiration
Definition
process that takes place inside cells; uses 02 and produces co2
Term
Gas exchange in the lungs takes place by...
Definition
diffusion
Term
flow pattern of air
Definition
external nares>nasal cavity w/vibrissae>>choanae--> pharnyx-->larynx-->(glottis)---> trachea--->bronchi (1deg. 2deg. 3deg.)--> terminal bronchioles---> respiratory bronchioles---> alveolar ducts---> alveolar sacs--> alveoli
Term
Actual gas exchange only takes place from the________ to the ________
Definition
respiratory bronchioles, alveoli
Term
The pharynx is divided into 3 sections:
Definition
nasopharynx, oropharynx,laryngopharynx
Term
where you would look for strange things that you may have swallowed
Definition
trachea
Term
what kind of cells line the respiratory tree?
Definition
stratified squamous to the trachea, pseudostratified ciliated columnar epithilium from the respiratory bronchioles down to the alveoli
Term
The lungs lie in the...
Definition
pleural cavity
Term
visceral pleura
Definition
the membrane on the surface of the lungs
Term
parietal pleura
Definition
the membrane surrounding the lungs
Term
pleurisy
Definition
inflammation of the membranes around the lungs
Term
thoracocentesis
Definition
procedure to drain fluid built up from inflammation
Term
air moves because of...
Definition
pressure differences
Term
normal atmospheric pressure at sea level is
Definition
760 mm of HG
Term
during inhalation the muscles of the diaphram____. and the sheet of muscle ______. the rib muscles______
Definition
relax. flattens out. contract.
Term
the process of the muscles contracting during inhalation is
Definition
to increase the space of the pleural cavity
Term
during inhalation pressure is _____, and air rushes ___ the lungs.
Definition
lowered. into
Term
during expirations the diaphram ____. but ______ the space in the pleural .air then rushes ____
Definition
relaxes;reduces; out of
Term
the pleural cavity is always under a slight ______
Definition
vaccum
Term
pneumothorax
Definition
when the pleural cavity is punctured from the outside and the lung deflates and loses its vaccum
Term
actual gas exchange in the lungs takes place by
Definition
diffusion
Term
concentration differences in gases in the lungs. measured by a mixture of different gases
Definition
partial pressures
Term
atmospheric pressure x % gas concentration
Definition
partial pressures
Term
Type I cells
Definition
do gas exchange
Term
Type 2 cells
Definition
produce and release a chemical surfacant the lowers the surface tension in the alveolus
Term
surfactant
Definition
lowers the surface tension in the alveolus
Term
Tidal Volume
Definition
amount of air inhaled/exhaled during normal relaxed breathing ~500 cc
Term
Inspiratory reserve vol.
Definition
the amount of air you can inhale after a tidal volume ~3000 cc
Term
expiratory reserve vol.
Definition
the amount of air you exhale following a tidal volume ~1100cc
Term
residual volume
Definition
the air that remains in the lungs after expiratory reserve is exhaled ~1200cc
Term
Total lung capacity
Definition
total volume of air in lungs at end of a maximum inspiration
Term
vital capacity
Definition
the maximum amount of air that can be expired following a maximum inspiration
Term
during a normal inspiration, about ___ cc are moved into the lungs however about ____ cc of this is in the ________ where no gas exchange occurs
Definition
500;150;bronchial tree
Term
normal respiratory rate
Definition
between 13-18/min
Term
normal respiratory rate is naturally lower in ______ and get gradually declines with age.
Definition
newborns
Term
respiratory minute volume
Definition
respiratory rate x tidal volume
Term
eupnea
Definition
quiet breathing
Term
hyperpnea
Definition
increased resp.rates (exersize)
Term
dyspnea
Definition
very labored breathing with discomfort
Term
apena
Definition
temporary cessation of breathing
Term
breathing is controlled by the respiratory center that includes portion of the ______and ________ __________.
Definition
pons and medulla oblongata
Term
the pons and medulla that control the respiratory rate includes...(3)
Definition
1. inspiratory and expiratory center
2. pneumotaxic center
3. apneustic center
Term
what are the 3 chemicals that interact in regulating respiration
Definition
CO2,O2, and H+ levels
Term
these chemicals that regulate respiration are sensed by
Definition
chemoreceptors
Term
where are the chemoreceptors concentrated in the body?
Definition
aortic and carotid sinuses
Term
which 2 chemicals are the most stimulative in regulating respiration?
Definition
CO2 and H+
Term
chemical equation of respiration
Definition
CO2+H20---->H2CO3---->H+ + HCO3
Term
why does blood hold about 20x more oxygen than water?
Definition
because the hemoglobin inside red blood cells can temporarily bind with the 02, producing oxyhemoglobin.
Term
oxygen dissocation curve
Definition
a curve showing when the oxygen is released from the red blood cells and unbinds from the hemoglobin
Term
how does carbon dioxide get back to the lungs? (3)
Definition
1. in solution in the plasma ~7-8%
2.bound to hemoglobin and is called carminohemoglobin ~23-27%
3.bicarbonate ions in plasma ~70%
Term
barcarbonate ions formula
Definition
CO2 + h2o--->H2CO3---->H+ + hco3
Term
carbonic anhydrase
Definition
an enzyme required in bicarbonate ions that is located inside red blood cells
Term
Asthma
Definition
a common chronic disorder of the airways that is complex and characterized by variable and recurring symptoms, airflow obstruction, bronchial hyperresponsiveness, and an underlying inflammation
Term
Bronchitis
Definition
an inflammation of the air passages within the lungs
Term
lung cancer treatments
small cell lung carcinoma
Definition
radiation
Term
lung cancer treatments
non-small cell carcinoma
Definition
surgery
Term
what are the main two types of lung cancer?
Definition
small cell lung carcinoma and non-small cell lung carcinoma
Term
Emphysema
Definition
characterised by a lack of elasticity of the lung tissue causing alveoli to collapse during exhalation. otherwise know as COPD
Term
Laryngitis
Definition
an inflammation of the larynx. causes a hoarse voice or the complete loss of the voice because of irritation to the vocal cords
Term
Pneumonia
Definition
inflammatory illness of the lung. more than 100 strains of microorganisms can cause this. most common are viruses and bacteria.less common is fungus and parasites.
Term
Tuberculosis
Definition
common and often deadly infectious disease cause by mycobacteria, in humans mainly mycobacterium tuberculosis. 1/3 of world exposed to asymptomatic.
Term
Pleurisy
Definition
Pleurisy is inflammation of the lining of the lungs and chest (the pleura) that leads to chest pain (usually sharp) when you take a breath or cough. Symptoms: The main symptom of pleurisy is pain in the chest
Term
Tracheotomy
Definition
Among the oldest described surgical procedures, tracheotomy (also referred to as pharyngotomy, laryngotomy, and tracheostomy) consists of making an incision on the anterior aspect of the neck and opening a direct airway through an incision in the trachea.
Term
what are the names of the cartilages that make up the larynx?
Definition
thyroid cartilage, epiglottis, and cricoid cartilage
Term
what is significant about a tertiary bronchus?
Definition
Term
describe the actual process of gas exchange in the alveolus
Definition
Term
how many unit membranes must each gas cross?
Definition
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