Respiratory System 2 Word Scramble
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Question | Answer |
PO2 is | partial pressure of oxygen |
PCO2 | partial pressure of Carbon Dioxide |
air on the arterial side contains much higher | PO2 |
air on the arterial side contains much lower | PCO2 |
Higher PO2 and PCO2 allow for oxygen to | diffuse into the capillary |
Higher PO2 and PCO2 allow carbon dioxide to | diffuse out of capillary, after which it is exhaled |
P is | partial pressure of a gas |
Tissue PO2 stays at approximately | 40 mm Hg |
Hg is | mercury |
when not breathing pressure inside the lungs is same or different | same |
atmospheric pressure in | 760 mm HG |
PV stands for | pressure and volume |
if lung pressure goes up volume goes.... | down |
if lung pressure goes down, volume goes | up |
the pressure within the lungs drops .... mm HG during | inspiration |
during inspiration mm HG is | 758 |
the diaphragm comes up or drops down during inspiration | drops down |
Type ii alveolar cells secretee | lipoprotein |
lipoprotein substances is called | surfactant |
are surfactants a dry or oily substances | oily |
inside the alveoli,water tension does what | pulls inward on the alveolus |
why does water tension pull inwards on the alveolus | it is trying to collapse it |
...... breaks surface tension | surfactant |
why is it important to have surfactant | breaks surface tension to prevent collapse of the alveoli |
fetal lung produce very little | surfactant |
when born premature the lung | are difficult to expand and alveoli may collapse due to surface tension |
during respiratory distress syndrome what can be inserted in the lung | artificial surfactant |
In the brain stem, what contains respiratory centers to control breathing | pons & medulla oblongata |
what controls the rate of breathing | pons and medulla oblongata |
what 2 nerves control over breathing | phrenic & vagus |
diaphragm contracts via the | phrenic nerve |
sensory information from the lungs travels back to the brain via | vagus nerve |
what nerve tells the brain houw stretched the lung are and not to over stretch them | vagus nerve |
carbon dioxide is an | acid |
the higher the acidity the .... the ph | lower |
can receptors in the brain detect blood chemistry changes in breathing | yes |
the receptors in the brain that detect the changes in blood chemistry that affect breathing are called | central chemoreceptors |
ph will go up or down as PCO2 increases | down |
if ph drops below 7.4 this change is detected in the medulla oblongata, true or false | true |
what is detected in the medulla oblongata | changes in ph levels |
what causes an increase in respiration | ph drop below 7.4 |
Receptors in the arota and carotid arteries detect changes in | oxygen concentration |
receptors in the aorta are called | aortic bodies |
receptors in the carotid ateries are called | carotid bodies |
what receptors send sensory information | arotic and carotid bodies |
sensory information is sent via what nerve | vagus and glossopharyngeal nerve |
the vegus and glossopharyngeal nerves send information to the | medulla oblongata |
low oxygen will trigger stimulation of ........ | aorta and carotid receptors |
when low oxygen trigger stimulation of receptors this will | increase respiration |
Tidal volume | amount of air moved during a breath 500ml |
inspiration reserve volume | additional inspiration lung volume not used at rest 3000ml |
expiratory reserve volume | additional expiration lung volume not used at rest 1100ml |
residual volume (dead space) | set amount of air in lungs after maximum expiration 1200ml |
vital capacity | maximum tidal volume... max amount of air 4600ml |
total lung capacity | 5800ml |
vital capacity is equal to | inspiration reserve + tidal volume + expiratory reserve volune |
total lung capacity is equal to | Inspiratory reserve + tidal volume + expiratory reserve volume + residual volume (dead space) aq |
hemoglobin saturation is | amount of oxygen bound to hemoglobin |
what affect hemoglobin saturation | PCO2, ph and temperature |
an increased PCO2 causes more dissociation of | oxygen from hemaglobin |
as ph decreases, hemoglobin saturation | decreases |
an increase in PCO2 causes | decrease in ph |
a decrease in ph causes | more oxygen to dissociate |
ph is dependent on more than just | CO2 |
is hemoglobin saturation inversely proportional to temperature | yes |
increased tempurature is degreased | hemoglobin saturation |
body temp in celius | 37-38 |
asthma is a condition of what | trachea and bronchi lumen |
what happens when you have asthma | inflammation and mucous production, muscle contraction and lumen decreases in size |
emphysema is a condition of | alveolar walls rupture, creating larger spaces but less surface area for gas exchanges |
emphysema increases surface area for gas exchange | false |
what reduces elasticity of lung, resulting in difficulty exhaling | emphysema |
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Miccimouse
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