Ch 23: Respiratory System Flashcards
Upper respiratory tract
-External nose, cavity, pharynx, larynx
Purpose of nasal cavity
Clean, warm, and humidifier
Pharynx
Throat
Larynx
Above the glottis
-Voicebox
Lower respiratory tract
Larynx, trachea, bronchi, lungs
Bronchi
Tubes that direct air to lungs
Lungs
Network of alveoli and capillaries for gas exchange
Glottis
Opening found in voice box in between the two vocal cords
Three positions of conchi
Superior, middle, and inferior
Is pneumonia considered an upper respiratory tract infection
False, it’s a lower respiratory tract infection
Is inflammation and infection in the throat
It’s an upper respiratory tract infection
Conducting zone
-pulmonary ventilation
-Nose, nasal cavity, pharynx, larynx, trachea, bronchi, and terminal bronchioles
Respiratory zone
Gas exchange
-Respiratory bronchioles and alveoli
What is the major gas in the atmosphere?
Nitrogen
Ventilation
Act of inhaling and exhaling air
Respiration
Performing gas exchange in the lungs
External respiration
Gas exchange between air in lungs and pulmonary capillaries (blood)
Internal respiration
Gas exchange between tissue capillaries and working tissues
In internal respiration, carbon dioxide is going to move into the tissues
False, we take oxygen out of tissue to exhale CO2 to tissue capillary
An external respiration oxygen moves into alveoli?
False, O2 needs to move to capillary not alveoli
What systems regulate blood pH?
Respiratory system and urinary system
What causes the release of RAAS
A drop in volume and pressure
What are the three line of defense is?
-nose hair
-Ciliated pseudostratified epithelium with goblet cells
-Alveolar macrophages
Runnin – angiotensin – aldosterone system (RAAS)
Renin converts Angeo 10 Synergen into angiotensin one, then angiotensin1 converts, angiotensin, converting enzyme into angt2
What does angiotensin 2 cause:
-SNS= vaso constriction of blood vessels (incr pressure)
-Adrenal glands= Aldosterone to retain water (increase pressure)
-Post pituitary gland= ADH to retain water in DCT & CD
* Worsens hypertension*
3 bones that form nasal cavity
Ethmoid, septal cartilage, and vomer bone
What is the superior structure of the nasal pathway?
Nasal pharynx
What is the middle structure of the nasal pathway?
Oropharynx
What is the inferior structure of the nasal pathway?
Laryngopharynx
What is the voice box called?
Larynx
How many cartilages make a larynx
Nine cartilages
Where does the nasal pharynx start at?
Starts at Choanae and ends at uvula
What are the single cartilages of the larynx?
-thyroid: V-shaped, forms Addams apple
-Cricoid: O-Shaped, most inferior
-Epiglottis: spoon-shaped, protect airway
What are the paired cartilages of the larynx?
-Arytenoid: attached to cricoid cartilage
-Corniculate: hook cartilage attached to arytenoid
-Cuneiform: located anterior to corniculate
Vestibular folds
False vocal cords
Vocal folds
True vocal cords in between Glottis
Trachea
C-shaped, windpipe
-15 to 20 cartilages
What’s the inner lining of the trachea?
Ciliated pseudostratified, columnar epithelium with goblet cells
Where is the carina located?
In between T4 and T5
What is the structure before the carina?
The trachea
What is the structure after the carina?
Primary bronchus
What comes after the primary bronchus?
The secondary bronchi, and the tertiary bronchi
What is the pathway from the trachea to the alveoli?
- Trachea.
- Primary bronchus.
- Secondary bronchus.
- Tertiary bronchus
- Bronchiole.
- Terminal bronchioles.
- Respiratory bronchioles.
- Alveolus
Respiratory bronchioles
Gas exchange occurs in between whole lungs and tissues
-alveoli and capillaries
-External respiration
Terminal bronchioles
First segment before respiratory bronchioles
Bronchodilation
Smooth muscle relaxes to increase airflow
Bronchoconstriction
Smooth muscle contracts
Alveoli
Air sacs in the lungs
What is a dust cell
Third line of defense of immunity
What is type I pneumocyte
To provide structure support
What is type II pneumocyte
Produced a substance called surfactant
-Surfactant will reduce surface tension to prevent the Alveoli from collapsing
What does alveolar fluid do?
keeps alveolar open
What is simple diffusion
High to low
What is pleural cavity?
Surrounds each lung, and filled with pleural fluid
Visceral pleura
Inner lining of the lung
Parietal pleura
Outer lining of the lung
What is the root of the lung?
Pulmonary Hilum
Characteristics of the right lung
Has three lobes, separated by fissures
- oblique and and horizontal fissure
Characteristics of the left lung
Two lobes with an indentation, called the cardiac notch
- oblique fissure
-Has cardiac impression for the heart
Diaphragm
Dome shaped muscle
-Quiet, breathing and force breathing
Boyles law
•Diaphram contracts (inhaling)
-As volume increases,pressure decreases
•Diaphragm, relaxes, saying (exhaling)
-As volume decreases, pressure increases
What is tidal volume?
Quiet breathing
What is inspiratory reserve volume?
Forceful, inhaling
What is expiratory reserve volume?
Forcefully exhaling breath
Residual volume
Air remaining in the lungs
Inspiratory capacity’s
TV + IRV
Functional residual capacity
ERV + RV
Vital capacity
ERV + TV + IRV
Total lung capacity
TV + IRV + ERV + RV