Respiratory System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
---|---|---|---|---|---|
vibrissae | nose hairs
🗑
|
||||
olfactory mucosa | lining the slitlike superior region of the nasal cavity, contains receptors for the sense of smell
🗑
|
||||
respiratory mucosa | balance of the nasal cavity mucosa is a pseudostratified ciliated columnar epithelium containg scattered goblet cells
🗑
|
||||
lysozyme | type of mucus sectreted by glands
🗑
|
||||
defensins | secrete by epithelial cells of the rspiratory mucosa that are natural antibiotics that help to get rid of invading microbes
🗑
|
||||
meatus | inferior groove into each concha
🗑
|
||||
name the 3 regions of the pharynx | nasopharynx, oropharynx & laryngopharynx
🗑
|
||||
pharyngeal tonsil | located on the posterior walls of the nasopharynx; traps & destroys pathogens entering the nasopharynx in air
🗑
|
||||
name the two kinds of tonsils that lie embeded in the oropharyngeal mucosa | pired palatine tonsils; & lingual tonsil
🗑
|
||||
laryngopharynx | common passageway for food & air & is line w. a stratified squamous eithelium
🗑
|
||||
name the functions of the larynx | provide a patent(open) airway, to act as a sqitching mechanism to route air & food into the proper channels & voice production (bc it houses the vocal cords)
🗑
|
||||
vocal ligaments | lies under the laryngeal mucosa on each side; attaches the arytenoid cartilages to the thyroid cartilage
🗑
|
||||
laryngitis | inflammation of the vocal folds; causes vocal folds to swell, interferin w their vibration; also caused by overuse of voice, very dry air, bacterial infections rumors & inhalation of irritating chems
🗑
|
||||
Valsalva's maneuver | when the abdomnal muscles contract & the intraabdominal pressure rises; heling to empty the rectum or bladder & can also splint (stabilize) the body trunk when 1 lifts a heavy load
🗑
|
||||
submucosa | a connective tissue layer deep to themucosa, contains seromucousglands that help produce the mucus "sheets" within the trachea
🗑
|
||||
adventitia | outermost layer that is a connective tissue layer that is reinforced internally by 16 to 20 C-shaped rings of hyaline cartilage & is perfused tot eh perichondrium of theses cartilages
🗑
|
||||
carina | a spar of cartilage that projects posteriorly from its inner face marking the point where the trachea ends by splitting into the two primary bronchi
🗑
|
||||
secondary (lobar) bronchi | once inside the lungs, each primary bronchus subdivides into this; there are three on the right side & 2 on the left (each of which supplies one lung lobe)
🗑
|
||||
tertiary (segmental) bronchi | what the secondary bronchi branch divides into; divide repeatedly into smaller & smaller bronchi
🗑
|
||||
bronchioles | when air passages are under 1 mm in diameter
🗑
|
||||
bronchial or respiratory tree | the branching pattern, conducting network withing the lungs
🗑
|
||||
respiratory zone | defined by the presence of thin-walled air sacs called alveoli
🗑
|
||||
name the hierchy of the respiratory zone | terminal bronchioles-respiratory bronchioles-alveolar ducts-alveolar sacs
🗑
|
||||
where does the actual exchange of gas occur | in the alveoli
🗑
|
||||
Type I cells | a single laer of squamous epithelial cells that the walls of the alveoli are composed primarily of; their surrounded by a flimsy basal lamina
🗑
|
||||
respiratory membrane (air-blood barrier) | alveolar-capillary membrane; the combination of the alveolar & capillary walls and their fused basal laminas; has gas on one side & blood flowing past on the other
🗑
|
||||
oxygen passes from the ___ into the blood | alveolus
🗑
|
||||
carbond dioxide ____ the blood to enter the gasfilled alveolus | blood
🗑
|
||||
type I cells are the primary source of | ACE;angiotensin converting enzyme; plays a role in blood pressure regulation
🗑
|
||||
type II cells | secret a fluid containing surfactant that coats the gasexposed alveolar surfaces
🗑
|
||||
alveolar pores | allow air pressure throughout the lung to be equalized & provide alternate air routes to any alveoli whose bronchi have collapsed through disease
🗑
|
||||
alveolar macrophages | crawl freely along the internal alveolar surfaces (AKA dust cells)
🗑
|
||||
hilus | an indentation on the medial (mediasinal) surface of each lungq
🗑
|
||||
what subdivides the left lung into tow lobes | the oblique fissure
🗑
|
||||
what subdivides the right lung into 3 lobes? | the oblique & horizontal fissures
🗑
|
||||
bronchopulmonary segments | a certain amount of pyramid shaped segments present in each lung lobe; they are separated from one another by connective tissue septa; each sement is served by its own artery & vein & receives air from an individual segmental bronchus
🗑
|
||||
each lung contains __ bronchopulmonary segments arranged in similar patterns | 10
🗑
|
||||
what is the importance of bronchopulmonary segments | when a pulmonary disease occurs it is often confined to one or a few bronchopulmonary segments
🗑
|
||||
lobule | the smallest subdivision of the lung visible with the naked eye; each one is served by a large bronchiole & its branches
🗑
|
||||
stroma | balance of lung tissue
🗑
|
||||
pulmonary arteries | lie anterior to the primary bronchi; deliver systemic venous blood that is to be oxygenated in the lungs
🗑
|
||||
pulmonary capilary networks | fed off of the pulmonary arteries; surrond the alveoli
🗑
|
||||
pulmonary veins | conveys freshly oxygenated blood from the respiratory zones of the lungs to the heart
🗑
|
||||
bronchial arteries | provide systemic blood to the lung tissues, arise from the aorta & enter the lungs at the hilus
🗑
|
||||
pulmonary plexus | the transport vehicle for nerve fibers to enter each lung; located on the lung root & run along the bronchial tubes & blood vessels within the lungs
🗑
|
||||
pleurae | forma thin, double-layered serosa
🗑
|
||||
parietal pleura | covers the thoracic wall & superior face of the diaphragm; continues aroung the heart & between the lungs, forming the lateral walls of the mediasinal enclosure & snugly enclosing the root of the lung
🗑
|
||||
visceral/pulmonary pleura | an extension of the pleura that covers the external lung surface, dipping into & lining its fissures
🗑
|
||||
pleurisy | inflammati of the pleurae; often results fm pneumonia; pleural surfaces become dry & rough or over fluidized
🗑
|
||||
name the two phases of pulmonary ventilation | inspiration & expiration
🗑
|
||||
inspiration | period when air flows into the lungs
🗑
|
||||
expiration | period when gases exit the lungs
🗑
|
||||
intrapulmonary pressure | (Palv) pressure within the alveoli of the lungs (rises & falls with the phases of breathing)
🗑
|
||||
intrapleural pressure | (Pip) pressure within the pleural cavity; always about 4 mm Hg less than the pressure in the alveoli
🗑
|
||||
fluids move from | high to low pressure
🗑
|
||||
transpulmonary pressure | the difference between teh intrapulmonary & intrapleural pressures (Palv - Pip); keeps the airspaces of the lungs open/keeps lungs from collapsing
🗑
|
||||
atelectasis | lung collase, occurs when air enters the pleural cavity through a chest wounds, or a rupture of the visceral pleura which allows air to enter the pleural cavity from th rspiratory trat
🗑
|
||||
pneumothorax | the presence of air in the intrapleural space; can be reversed by closing the "hole" & drawing air out of the intrapleural space w chest tubes allowing the lung to reinflate & resume its normal function
🗑
|
||||
pulmonary ventilation depends on | volume changes occurring in the thoracic cavity
🗑
|
||||
volume changes lead to ______ which lead to the _____ to equalize the pressure | pressure changes; flow of gases
🗑
|
||||
Boyles' law | ideal gas law; states the relationship between the pressure & volume of gases; when a temperature is constant, the pressure of a gas varies inversely w/ its volume
🗑
|
||||
name the inspiratory muscles | the diaphragm & the intercostal muscles
🗑
|
||||
when P-avl > P atm the pressure gradient forces gases to | flow out of the lungs
🗑
|
||||
F= delta P/ R | shows the relationship between gas flow, prssure & resistance
🗑
|
||||
gas flow changes ___ w. resistance | inversely (gas flow decreases as resistance increases
🗑
|
||||
surfactant | a detergen-like complex of lipids & proteins produced by the type II alveolar cells
🗑
|
||||
IRDS (infant respiratory distress syndrome) | causes when too little surfactant is present, surface tension forces can collapse the alveoli; treated with positive pressure respirators that force air into the alveoli
🗑
|
||||
FRC; functional resdual capacity | combined residual & expiratory reserve volumes & represents the amount of air remaining in the lungs after a tidal expiration
🗑
|
||||
VC; vital capacity | total amount of exchangeable air (sum of tidal, inspiratory reserve & expiratory reserve volumes) 4800 ml
🗑
|
||||
TLC; total lung capacity | the sum of all lng volumes & is normally around 6000 ml in males
🗑
|
||||
minute/total ventilation | the total amount of gas that flows into or out of the rspiratory tract in 1 min
🗑
|
||||
FVC; forced vital capacity | measures the amount of gas expelled when a subject takes a deep breath & then forcefully exhales maximally & as rapidly as possible
🗑
|
||||
FEV; forced expiratory volume | determines the amount of air expelled during specific time intervals of the FVC test
🗑
|
||||
how is alveolar ventilation computed? | AVR(ml/min)= frequency (breaths/min) x (TV - dead space)(ml/breath)
🗑
|
||||
Dalton's law of partial pressures | the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture
🗑
|
||||
partial pressure | the pressure exerted by each gas; it is directly proportional to its percentage in the total gas mixture
🗑
|
||||
Henry's law | when a mixture of gases is in contact w/ a liquid, each gas will dissolve in the liquid in proportion to its partial pressure
🗑
|
||||
oxygen toxicity | develops rapidly when the P 02 is greater than 2.5-3 atomospheres
🗑
|
||||
deoxyhemoglobin (HHb)/reduced hemoglobin | hemoglobin that has released oxygen
🗑
|
||||
Bohr effect | oxygen unloading is accelerated where it is most needed
🗑
|
||||
hypoxia | inadequate oxygen delivery to body tissues
🗑
|
||||
anemic hypoxia | reflects poor oxygen delivery resulting from too few RBCs or from too few RBC or from RBCs that contain abnormal or too little hemoglobin
🗑
|
||||
ischemic (stagnant) hypoxia | results when blood circulation is impaired or blocked
🗑
|
||||
histotixic hypoxia | occurs when blody cells are unable to use oxygen even though adequate amounts ar delivered
🗑
|
||||
hypoxemic (hypoxic) hypoxia | indicated by reduced arterial P o2
🗑
|
||||
carbon monoxide poisoning | unique type of hypoxemic hypoxia & is the leading cause of death from fire
🗑
|
||||
carbaminohemoglobin | carries just over 20% of transported carbon dioxide thats carried within RBC
🗑
|
||||
carbonic anhydrase | an enzyme that reversibly catalyzes the conversion of carbon dioxide & water to carbonic acid
🗑
|
||||
chloride shift | the ionci exchange process; a rapid outrush of negative bicarbonate ions from the RBC chloride ions (Cl-) move from the plama into the erythrocytes
🗑
|
||||
Haldane effect | reflects the greater ability of reduced hemoglobin to form carbaminohemoglobin & to buffer H+ by combining with it
🗑
|
||||
carbonic acid-bicarbonate buffer system | (if the hydrogen ion concentration in blood begins to rise, excess H+ is removed by combining w. HCO3- to form carbonic acid (a weak acid that disociates very little at either physiological or acidic pH) (if H+ concentration drops below desirable levels i
🗑
|
||||
eupnea | normal respiratory rate & rhythm
🗑
|
||||
peumotaxic center | the more superior pons center continuously transmits inhibitory impulses to the inspiratory center of the medulla
🗑
|
||||
apneustic center | appears to provide inspiratory drive by continuously stimulateding themedullary inspiratory center
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
Brina
Popular Medical sets