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- Air rushes into the lungs of humans during inhalation because O pulmonary muscles contract and pull on the outer surface of the lungs. O smooth muscle lining the trachea, bronchi and bronchioles contracts and causes their volume to increase. pressure in the alveoli increases. O the volume of the thoracic cavity increases. O the diaphragm contracts and pushes upward on the chest cavity. MacBook Air 888 F5 F6 F7 F2 F3 F4 @ #3 $ & 4 5 6. 8. W R Y F G J K C V M ommandFish and some reptiles use this form of "pumping" to ventilate their respiratory surfaces: O Buckle pumping O Countercurrent pumping O Buccal pumping O Costal pumping O Ventilatory pumpingWhat structures are involved gas exchange in animals? gills O lungs allantois U chorion arteries
- The anatomy of bird lungs is very different to that of mammals. Birds have unidirectional flow of air through the bronchi. Similar to humans, birds have a two-step breathing (in through the beak and then out through the beak). 3 marks Unsorted B Trachea Human alveoli A D B For each position in the diagram, sort them into the appropriate group. Syrinx Ventrobronchi Only fresh air Primary bronchus с Intrapulmonary bronchus B Only 'spent' air Bronchi airflow direction Laterobronchus D A mix of airBecause flight is metabolically demanding, birds have very efficient systems that help to meet these demands. Look at the following list of characteristics and choose those that contribute to the physiological demands of flight. One-way airflow respiration Endothermy Large heart Nucleated red blood cells Slow heart rate Two-cycle lung ventilation Air sacs Separate pulmonary / systemic circulation Air capillariesFish have a [ Select ] circulatory system in which blood travels from the [Select ] to the [ Select ] to become oxygenated, and then to the [ Select ] Thus fish do not have an extrav [Select ] body gills lungs single circuit double circuit like reptiles. pulmonary circuit Next « Pre heart pulmocutaneous circuit systemic circuit
- Your friend found out that he got into medical school and has a little bit of a happy-attack, complete with hyperventilation. What is going on in his body while he is hyperventilating? O Inspiratory reserve volume is going up O Residual volume is going down O Tidal volume is going down O H+ excretion begins to happen as a compensation O Blood CO2 is decreasingMay 16 Unproctored Which row describes the relative concentrations of oxygen and carbon dioxide right as blood is LEAVING the lungs? Pressure of gases Row Oxygen Carbon Dioxide high A. high В. high low C. low high D. low low Select one: О а. а O b. b O c. C O d. dDeoxygenated/High CO₂ blood is carried to the heart by. and pushes the blood through the E valve into the Gvalve into the H which branches into the right and left In the lungs, the CO2 is exchanged for O₂. The highly oxygenated (low Carbon dioxide) blood returns to the heart in the right and left J. These vessels enter the K which contracts and pushes the blood through the valve. Blood enters the thick-walled M which contracts, forcing the blood through the N valve and out through the O to the BODY. The first branch off the aorta is the P which carries oxygenated blood to the myocardium. The Q returns the blood from the myocardium to the right atrium. The branches off of the aortic arch include: the R which supplies blood to the right head, neck and upper extremity; the Swhich supplies blood to the left head and neck; and the __________ which supplies blood to the left upper extremity. A. B. C. D. E. F. G. A, B, C. The blood enters the D. The atrium contracts F. When the right…
- Gas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because CHECK ALL THAT WOULD APPLY water contains much more O2 per unit volume than air gills allow water to flow in one direction. water contains much less O2 per unit volume than air gills have less surface area than lungs. water is denser than airBreathing _______. a. ventilates the lungs b. draws air into airways c. expels air from airways d. causes reversals in pressure gradients e. all of the aboveIn______, gas exchange occurs at the body surface and gas is distributed by diffusion alone. a. earthworm c. frogs b. flatworms d. insects