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Ch 20
Respiratory System
56
Anatomy
Undergraduate 3
07/21/2014

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Cards

Term
what are the functions of the respiratory system
Definition
1. exchange gases 2.warm and humidify 3. trap and remove mirobes and dust 4. sense of smell 5. produce sound
Term
what are the 2 divisions of respiratory system
Definition
Upper and Lower
Term
List the organs of the Upper Respiratory System
Definition
Nose, nasal cavity, pharynx, larynx, and upper trachea
Term
List the organs of the Lower Resp. System.
Definition
Lower trachea, bronchi, bronchioles, alveoli, and lungs
Term
Air entering the body is filtered, warmed, and humidified by the?
Definition
Upper respiratory tract
Term
The conducting airways consists of which type of epithelium?
Definition
pseudostratified ciliated columnar
Term
The most common lethal inherited disease affecting individuals of Northern European descent?
Definition
Cystic fibrosis
Term
The common passageway shared by the respiratory and digestive system is the?
Definition
Pharynx
Term
Which structure vibrates to produce sound?
Definition
Vocal chords in the larynx
Term
Why is inhaling through the nostrils preferred over the mouth?
Definition
It allows better conditioning of the inhaled air
Term
The elastic cartilage that covers the opening to the larynx during swallowing
Definition
Epiglottis
Term
What branches from the trachea?
Definition
Primary bronchi
Term
Where does the actual site of gas exchange occur within the lungs?
Definition
Alveoli
Term
The respiratory membrane of the gas exchange surfaces consists of which type of epithelial tissue?
Definition
Simple squamous
Term
Boyle's Law of gases states that?
Definition
When volumes goes up, the Pressure goes down
Term
When there is no air movement, the intrapulmonary and atmospheric pressure are?
Definition
Equal
Term
When the diaphragm contracts the lungs?
Definition
Expand causing air to flow out
Term
If a patient being tested inhales as deeply as possible and then exhales as much as possible , the volume expelled would be the patient's?
Definition
Vital Capacity
Term
Respiratory rate X (Tidal Volume-Anatomic dead space) ?
Definition
Alveolar Ventilation rate
Term
What can be calculated if the tidal volume and the respiratory rate are known?
Definition
Minutes volume
Term
Henry's Law states that?
Definition
Volume of gas will dissolve in a solvent is proportional to the solubility of that gas.
Term
Dalton's law states that?
Definition
In a mixture of gases such as air, the total pressure is the sum of the Individual Partial Pressure of the gases in the mixture
Term
At a PO2 of 70 mm Hg and normal temperature and pH, hemoglobin is___ percent saturated with oxygen
Definition
More than 90%
Term
Most of the oxygen transported by the blood is?
Definition
Bound to hemoglobin
Term
Which factors would increase that amount of oxygen discharged by hemoglobin to peripheral tissue?
Definition
decrease the pH
Term
The normal rate and depth of breathing is established by the ____ center
Definition
Inspiratory center of DRG
Term
The most important chemical regulator of respiration is?
Definition
Carbon Dioxide
Term
Blocking afferent action potentials from the chemoreceptors in the carotid and aortic bodies would interfere with the brain's ability to regulate breathing in response to?
Definition
Change in PCO2
Term
Ralph is taking a scuba diving class, and is warned not to hold his breath when ascending from depth but to continuously release air from his mouth. What is the basis of this instruction, and what is the risk if it is ignored?
Definition
Pressure external drops but pressure in the tank increases. If it is kept in the lungs will get damaged.
Term
The normal respiration rate of a resting adult ranges from?
Definition
12-18 breaths each minute
Term
List 2 primary muscles of inspiration
Definition
Diaphragm and external intercostals
Term
Name the 4 accessory muscles of inspiration
Definition
1. Pec Major 2.Pec minor 3.Serratus anterior 4.Levator
Term
Name the 4 accessory muscles of expiration
Definition
1.Transverse Thoracis 2.Rectus Abdominous 3.External Obliques 4.Internal Obliques
Term
In oxygen transport in the blood, what percent is bound to hemoglobin?
Definition
98%
Term
In oxygen transport in the blood, what percent is dissolved in the plasma?
Definition
2%
Term
The hemoglobin molecule is composed of ____ polypeptide chains and ____ heme groups containing iron.
Definition
4; 4
Term
What does oxygen bind to?
Definition
Fe2+
Term
After one oxygen molecule (O2) binds to hemoglobin, it is easier for the other molecules to bind to the hemoglobin. This is known as?
Definition
Cooperating bonding
Term
When oxygen is loaded onto hemoglobin in the lungs, hemoglobin is called _______?
Definition
Oxyhemoglobin
Term
When oxygen is unloaded form the hemoglobin at the tissues it is called____?
Definition
de-oxygehemoglobin
Term
Partial pressure of oxygen in the lungs?
Definition
100 mm Hg
Term
Hemoglobin in the lungs?
Definition
98% saturated
Term
Partial pressure of oxygen in the tissues is?
Definition
40 mmHg
Term
Hemoglobin in the tissue is?
Definition
75% saturated
Term
With a decrease of 20 mmHg in the lungs, will the saturation of hemoglobin decrease significantly at high altitudes?
Definition
Yes
Term
With a decrease of mmHg in the tissues, wil the saturation of hemoglobin decrease significantly with exercise?
Definition
No
Term
Name the factors that alter PO2
Definition
Temperature, pH, BPG, PCO2
Term
During exercise, would and increase or decrease in these factors decrease PO2 hemoglobin saturation, making more O2 available to the tissues?
Definition
Increase temperature; decrease pH; increase PCO2; decreases BPG
Term
List the percentages for CO2 transport in the blood
Definition
7% dissolved in plasma; 20% combined with hemoglobin; 70% converted to bicarbonate ions
Term
When CO2 binds to hemoglobin, it is called
Definition
Carboxyhemoglobin
Term
CO2 bind with water to form?
Definition
Carbonic acid
Term
The catalyst for carbonic acid is?
Definition
Carbonic anhydrase
Term
The acid listed above (Carbonic anhydrase) dissociates into _____ ions and ______ ions.
Definition
H+; HCO3
Term
When bicarbonate ions move out of the RBC, _______ ions move in. This is known as ________ shift.
Definition
CL-; Chloride
Term
A decrease in hemoglobin O2 leads to an increase in CO2 loading. Said another way, O2 loading facilitates CO2 unloading. This is known as the _______ effect.
Definition
Haldane
Term
A decreasing in Co2 loading facilitates O2 unloading from hemoglobin. Said another way, CO2 loading facilitaes O2 unloading. This is known as ____ effect.
Definition
Bohr
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