Module 10: Respiratory System Flashcards

1
Q

Resp. Tract

A

Upper resp tract
- nose
- pharynx
- larynx

Lower resp tract
- trachea
- bronchial tree
- lungs

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2
Q

Respiratory Mucosa: structure

A
  • ciliated, pseudostratified columnar epithelium lines most of tract
  • stratified squamous epithelium lines nostrils, vocal cords, and pharynx
  • simple squamous epithelium lines alveoli
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3
Q

Respiratory mucosa:
Function

A

-protection
- air purification
- ciliary escalator

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4
Q

Upper resp tract: nose

A

Structure
- external nares
- nasal septum; R and L nasal cavities
- Frontal, maxillary, sphenoid, and ethmoid sinuses
- lacrimal sacs
- superior, middle and inferior nasal conchae (turbinate)

Function
- warms, filters and moistens inhaled air
- olfactory receptors

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5
Q

Upper resp. tract: pharynx

A

Structure
- nasopharynx, oropharynx, and laryngopharynx
- two nasal cavities, mouth, esophagus, larynx, and auditory tubes (Eustachian tubes) open into pharynx
-pharyngeal, lingual, and palatine tonsils

Function:
- passageway for food and liquids
- passageway for air and air distribution

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6
Q

Upper resp tract: larynx

A

Structure
- thyroid cartilage (adams apple), cricoid cartilage, and epiglottis
- glottis
- vocal cords

Function
- air distribution and passageway for air movement
- voice production

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7
Q

Lower resp. tract: trachea

A

Structure
- tube approx. 11 cm long and 2.5 cm wide
- extends from larynx into the thoracic cavity
- c-shaped rings of cartilage

Function
- patent airway
- passageway for air movement
- tracheal obstruction

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8
Q

Pulmonary ventilation

A

-mechanics of breathing
-regulation of breathing
- breathing patterns

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9
Q

Lower resp. tract

A

structure and function
- trachea> R and L bronchi > secondary bronchi > bronchioles> alveolar ducts> alveolar sacs > alveoli = alveolar air movement and distribution
- Alveoli

Structure:
- surfactant- covered respiratory movement
*type 1 alveolar cells
*type 11 alveolar cells

Function:
- gas exchange between air and blood

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10
Q

Lower resp tract: lungs

A

Structure:
- size: fills the chest cavity, except for middle space occupied by heart, large blood vessels, thymus, and esophagus
*apex (superior)
*base (inferior)

Pleurae
- membrane lining the thoracic cavity (parietal pleura) and covering the outer surface of each lung (visceral pleura)

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11
Q

Pulmonary Ventilation

A

Respiration
1. pulmonary ventilation
2. external respiration
3. internal respiration

Mechanics of breathing
- pulmonary ventilation
*inspiration (inhalation)
*expiration (exhalation)

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12
Q

Regulation of Ventilation

A

-Homeostasis of Blood gases
- brainstem control of respiration
*medullary centres
*pontine centres
- cerebral cortex control of respiration
- respiratory reflexes
*chemoreflexes
*pulmonary stretch reflexes

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13
Q

Breathing Patterns

A

-Eupnea
-Hyperventilation
-Hypoventilation
-Dyspnea
- Apnea
- Resp arrest
- cheyne-stokes respiration

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14
Q

Glossary: Adenoid

A

Literally, glandlike; adenoids, or pharyngeal tonsils, are paired lymphoid structures in the nasopharynx

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15
Q

Glossary: Alveolar duct

A

airway that branches from the smallest bronchioles; alveolar sacs arise from alveolar ducts

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16
Q

Glossary: Alveolar sac

A

each alveolar duct ends in several sacs that resemble a cluster of grapes

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17
Q

Glossary: Alveoli

A

literally, a small cavity; alveoli of lungs are microscopic saclike dilations of terminal bronchioles

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18
Q

Glossary: Aortic body

A

small cluster of chemosensitive cells that respond to carbon dioxide and oxygen levels

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19
Q

Glossary: Apnea

A

temporary cessation of breathing

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20
Q

Glossary: auditory tube (eustachian tube)

A

Tube that connects the throat with the middle ear to equalize air pressure on both sides of the tympanum (eardrum) ; also called eustachian tube

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21
Q

Glossary: Bicarbonate ion (HCO3-)

A

Negative ion common in water solutions, including body fluids; HCO3-; often acts as a buffer to increase pH (reduce acidity) of a solution

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22
Q

Glossary: Bronchi

A

The branches of the trachea

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23
Q

Glossary: Bronchiole

A

small branch of a bronchus

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24
Q

Glossary: Carbaminohemoglobin (HbCO2)

A

the compound formed by the union of CO2 with hemoglobin

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25
Glossary: Carbonic anhydrase (CA)
the enzyme that converts carbon dioxide into carbonic acid
26
Glossary: Carotid body
chemoreceptor located in the carotid artery that detects changes in oxygen, carbon dioxide, and blood acid levels
27
Glossary: Cellular respiration
enzymes in the mitochondrial wall and matrix using oxygen to break down glucose and other nutrients, releasing energy needed for cellular work
28
Glossary: Chemoreceptor
Any receptor that responds to chemicals, such as those responsible for taste and smell
29
Glossary: Chemoreflex
Any reaction triggered by a chemical change, as when the heart rate changes in response to shift in oxygen concentration in the blood
30
Glossary: Chronic bronchitis
chronic inflammation of the bronchi and bronchioles characterized by edema and excessive mucus production, often blocking air passages
30
Glossary: Cheyne- stokes respiration (CSR)
Pattern of breathing associated with critical conditions such as brain injury or drug overdose and characterized by cycles of apnea and hyperventilation
31
Glossary: Chronic obstructive pulmonary disease (COPD)
General term referring to a group of disorders characterized by progressive, irreversible obstruction of airflow in the lungs
32
Glossary: ciliary escalator
Process of cilia moving mucus and entrapped particles upward and out of the respiratory tract
33
Glossary: Compliance
the ease of stretch of a material - as in lung compliance, the stretchability of the lung tissues
34
Glossary: Conchae
shell-shaped structures; for ex. bony projections into the nasal cavity
34
Glossary: Diaphragm
membrane or partition that separates one thing from another; the flat muscular sheet that separates the thorax and abdomen and is a major muscle of respiration
35
Glossary: Diffusion
spreading; ie. scattering of dissolved particles
36
Glossary: Emergency medical technician
first responder trained to assess health conditions and administer emergency medical care
36
Glossary: Dyspnea
difficult or labored breathing
37
Glossary: Emphysema
Abnormal condition characterized by trapping of air in alveoli of the lung that causes them to rupture and fuse with other alveoli
37
Glossary: Eupnea
normal respiration
38
Glossary: Eustachian tube
Tube that connects the throat with the middle ear to equalize air pressure on both sides of the tympanum
38
Glossary: Endotracheal intubation
medical procedure in which a hollow tube is placed through the throat and directly down into the trachea to allow airflow
39
Glossary: Epiglottis
lidlike cartilage overhanging the entrance to the larynx
40
Glossary: expiration (exhalation)
moving air out of the lungs; also known as exhilation
41
Glossary: Expiratory muscle
any of the muscles that allow more forceful expiration to increase the rate and depth of ventilation; the internal intercostals and the abdominal muscles
42
Glossary: Expiratory reserve volume (ERV)
The amount of air that can be forcibly exhaled after expiring the tidal volume (TV)
42
Glossary: External nares
nostrils
43
Glossary: external respiration
the exchange of gases between air in the lungs and in the blood
44
Glossary: glottis
the space between the vocal cords
45
Glossary: Heme
iron-containing component of a hemoglobin molecule
45
Glossary: Hyperventilation
very rapid deep respirations
46
Glossary: Hypoventilations
slow, shallow respirations
47
Glossary: Hypoxia
abnormally low concentration of oxygen in the blood or tissue fluids
48
Glossary: Infant respiratory distress syndrome (IRDS)
leading case of death in premature babies; due to a lack of surfactant in the alveolar air sacs
49
Glossary: Inspiration (inhalation)
movement of air into the lungs; same as inhalation, opposite of exhalation or expiration
50
Glossary: Inspiratory muscle
the muscles that increase the size of the thorax, including the diaphragm and external intercostals, and allow air to rush into the lungs
51
Glossary: Inspiratory reserve volume (IRV)
The amount of air that can be forcibly inspired over and above a normal respiration
52
Glossary: Interarytenoid notch
The V-shaped groove at the median of the posterior margin of the opening of the larynx, between the two arytenoid cartilages of the larynx
53
Glossary: internal respiration
the exchange of gases that occurs between the blood and the cells of the body
53
Glossary: Lacrimal sac
pouch that collects tears from the eye and then drains them toward the nasal cavity
54
Glossary: larygopharynx
the lowest part of the pharynx
55
Glossary: larynx
the voice box, located just below the pharynx; the largest piece of cartilage making up the larynx is the thyroid cartilage, commonly known as the adams apple
56
Glossary: lingual tonsil
mass of lymphoid tissue located in the mucous membrane at the base of the tongue
57
Glossary: lower resp. tract
division of the respiratory tract that is within the thorax and composed of the trachea, all segments of the bronchial tree, and the lung
58
Glossary: lung
organ of respiration; the right lung has three lobes and the left lung has two lobes
59
Glossary: max. oxygen consumption
the max amount of oxygen taken up by the lungs, transported to the tissues, and used to do work
60
Glossary: Mucus
thick, slippery material that is secreted by the mucous membrane and keeps the membrane moist
61
Glossary: Nasal cavity
the moist, warm cavities lined by mucosa located just beyond the nostrils; olfactory receptors are located in the mucosa
62
Glossary: Nasal septum
a partition that separates the right and left nasal cavities
63
Glossary: Nasopharynx
the uppermost portion of the tube just behind the nasal cavities
64
Glossary: Nose
respiratory organ
65
Glossary: Oropharynx
the portion of the pharynx that is located behind the mouth
66
Glossary: oxyhemoglobin (HbO2)
oxygenated form of hemoglobin
67
Glossary: palatine tonsil
either of a pair of lymphoid masses located behind and below the pillars of the fauces
68
Glossary: Paramedic
health care worker trained to assist a physician or to give care in the absence of a physician, often as part of a first-responder team
69
Glossary: paranasal sinus
four pairs of sinuses that have openings into the nose
70
Glossary: Partial pressure (P)
pressure exerted by any one gas in a mixture of gases or in a liquid; symbol used to designate partial pressure is the capital letter P preceding the chemical symbol for the gas
70
Glossary: pharyngeal tonsil
tonsils located on the posterior wall of the nasopharynx; when enlarged, referred to as adenoids
71
Glossary: pharynx
organ of the digestive and respiratory system; commonly called the throat
72
Glossary: phrenic nerve
the nerve that stimulates the diaphragm to contract
72
Glossary: pleura
the serous membrane in the thoracic cavity that lines each pleural cavity and covers the lungs
73
Glossary: pleurisy
inflammation of the pleura
74
Glossary: pneumothorax
Accumulation of air in the pleural space, causing collapse of the lung
74
Glossary: Primary bronchi
first branches of the trachea (right and left primary bronchi)
74
Glossary: pulmonary ventilation
breathing; process that moves air in and out of the lungs
75
Glossary: Residual volume (RV)
the air that remains in the lungs after the most forceful expiration
76
Glossary: respiration
process that results in the absorption, transport, and utilization or exchange of respiratory gases between an organism and its environment
77
Glossary: Respiratory arrest
cessation of breathing without resumption
78
Glossary: resp. control center
any of the centers located in the medulla and pons that regulate the muscles of respiration
79
Glossary: Resp. membrane
the single layer of cells that makes up the wall of the alveoli
80
Glossary: resp. mucosa
mucus-covered membrane that lines the tubes of the resp. tree
81
Glossary: resp. system
the organs that allow the exchange of oxygen from the air with the CO2 from the blood
82
Glossary: Resp. therapist
health professional who helps patients increase respiratory function or overcome or cope with the effects of respiratory conditions
83
Glossary: Secondary bronchi
smaller bronchial branches resulting from division of primary bronchi
84
Glossary: sinusitis
sinus infection
84
Glossary: spirometer
an instrument used to measure the amount of air exchanged in breathing
85
Glossary: Sudden infant death syndrome (SIDS)
abnormal terminal condition in which an infant stops breathing
86
Glossary: Surfactant
a substance covering the surface of the resp. membrane inside the alveolus, which reduces surface tension and prevents the alveoli from collapsing
87
Glossary: Tidal volume (TV)
amount of air breathed in and out with each breath
87
Glossary: tonsilitis
an inflammation of the tonsils
88
Glossary: tonsils
mass of lymphoid tissue; protects against bacteria; three types: palatine - located on each side of the throat, pharyngeal (adenoids) - near the posterior opening of the nasal cavity, and lingual tonsils - near the base of the tongue
89
Glossary: trachea
the windpipe; the tube extending from the larynx to the bronchi
90
Glossary: tracheostomy
an opening in the trachea made by the tracheotomy (surgical cutting of the trachea)
91
Glossary: tracheotomy
surgical procedure in which an opening is cut into the trachea to maximize ventilation of the lower resp. tract
92
Glossary: turbinate
curving or spiral in structure
93
Glossary: Upper resp. tract
division of resp. tract outside the thorax that is composed of the nose, pharynx, and larynx
93
Glossary: Vital capacity (VC)
largest amount of air that can be moved in and out of the lungs in one inspiration of expiration
94
Glossary: Vocal cord
One of the bands of tissue in larynx responsible for production of sound (Speech)