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47 Cards in this Set
- Front
- Back
inhalation
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rip cage expends
inc volume of thoaric cavity reduces the pressure causing lung to expand and fill with air |
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exhalation
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dec in thoartic cavity
inc air pressure and force air out of alveoli lung deflates |
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initation of respiration
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signal to breath (neverve signal indicates low O2 and high CO2 and low ph in blood) originates from the medula oblongata and travels to the diaphragm via phrenic nerve
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transport of gas
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occurs at alveoli
alveoli have extremely think walls and are surrounded by net work of pulmonary capillaries O2 diffuse thru thin wall to blood, CO2 diffuse into the air of lung hemoglobin carry O2 in the blood Gas move from region of higher partial pressure region to lower partial pressure. |
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division of respiratory sys
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pharynx-larynx-trachea-bronchus-bronchiole-alveolar duct-alveolar sac-alveoli (where gas exchange occur)
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protozoans and coelenterates respiratory system
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every cell is in contact with external environment and respiratory gases can be exchange btw cell and enviornment by simple diffusion thru the cell mem.
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Annelids
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mucus secreted by cells on the external surface of the earthwarms's body provides a moist surface for gasous exchange by diffusion
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arthropods
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has TRACHEA(respiratory tubules) which reach every cell.
has Spiracles (opening) that permits intake, distribution, removing of gases directly btw the air and the body cell by diffusion |
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muscle inloved in ventilation ar()
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diaphragm
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diaphram seperates
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the thoracic cavity from the abdominal cavity and the intercostal muscle of the rib cage
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during inhalation diaphram
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contacts and flattens whileexternal intercostals contract pushing the rib cate up and out
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durng exhalation diaphram
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both diaphragm and the external intercostal relax, causing a dec in the size of thoracic cavity
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fucntion of lymphathic system
(3) |
return excess interstitial fluid that accumulate in the tissue to circulation
absorption of fats assist in immune surveillance |
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lymph
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excess interstitial fluid
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lymph ismoved through the system in lymph vessle w/o
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direct pumping
move mainly bythe pressure of skeletal muscle acting against the lymph vesel to move liquid foward |
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lymph insidethe vessle is () pressure
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very low pressure
which helps draw liquids out of tissue and into the lymph system |
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lymph vessle drain lymph into the large vein of?
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cardiovascular
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blockage of lymp can cause?
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swelling as fluid accumulate in the tissue
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lacteals
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lymph capillaries
collect fats from Small Intestine and transport them t the crculatory system |
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lymphatic system joins the circulatory system at the ? and move what?
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thorasic duct
fat |
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as lymph moves thru the lymphatic sys it pass thru?
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lymph node
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the filteration system cleans the
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extracellular fluids
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what is absorbed wia digestive system pass through the lymphaic sys before entering the circulatorysystem via thoracic duct
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triglyceride
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surfactant
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a fluid that coat alveolus which reduce the surface tension along alveoli and faclitates gas diffusion aross the membrane
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substance that prevents alveolar collapse
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surfactant
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for O2 partial pressure is greater in () than ()
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alveoli > blood
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for CO2 partial pressure is greater in () than ()
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blood > alveoli
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panting
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lowering of the blood temp
taking rapid breath than usual |
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mucus
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mucus coat keep passage way most and entrap any fre floating particle matter such as dust and pollen
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lung is surrounded by?
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parietal pleura mem.(outer)
visceral mem. (inner) |
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intepleural space
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region btw parietal and visceral mem.
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diaphram curved whn
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relexed
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diaphram flattes when
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contracted
expandin chest cavity |
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nagative pressure breathing
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inhalation
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intercostal muscle located in the hest aid in
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inhalation
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inhalation
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active process of muscle contraction
diaphramgm contracts externl intercostal muscle contract moving rib cate up and out |
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exhalation
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passive
diaphragm relexes external intercostal muscle relex |
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ventilation is regulated by
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medulla oblongata
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changes in PH and partial pressure of COx in the blood is responded by
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carotid body
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CO2 inc=PH dec then?
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depth of ventilation are inc
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spirmeter measures?
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the rate of respiration and the amont of air normally present in the lungs
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tidal volume
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first inc in the graph
amt of air normaly exhaled and inhaled w/ each breath |
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the expiratory reserve volume
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amt of air that can still be forcebly exhaled following a nrmal exhalation
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vital capacity
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maximum amt of air that can be forcibly exhled an inhaled w/each breath
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residual lung capacity
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volume of air in the lungs that is always in the lungs even following exhalation
this air also helps prevent alveolar collpse during exhalation |
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pathway O2 from external environment to circlatry sys
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nose-pharynx-larynx-treachea-lung-bronchus-bronchioles-alveolar duct-alveolar sac-sarfactant-alveolar mem-capillary mem-RBC
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pathway O2 from external environment to circlatry sys
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nose-pharynx-larynx-treachea-lung-bronchus-bronchioles-alveolar duct-alveolar sac-sarfactant-alveolar mem-capillary mem-RBC
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