Lab Activities A. Anatomical Structures and Functions . Find each of the structu
ID: 3517731 • Letter: L
Question
Lab Activities A. Anatomical Structures and Functions . Find each of the structures that you Pre-Lab Activities on r, you will betested using wm deled in the Pre-Lab Activities on models in the lab. 2. Compare the shape and lobes of the left and right lu another? ngs. What makes them different from one 3. What are three purposes of the pleural membranes? 4. In the heart, the pericardium played a role in resisting excessive expans pleural membrane does not play this role for the lungs. of the lungs? of the heart, but the What structure resists excessive expansion 5. Many people think that the epiglottis prevents food from being aspirated (entering the larynx) when you swallow. However, people who have had the epiglottis removed are still able to eat without choking. What structures actually prevent food from entering the larynx when you swallow? 6. What is the purpose of the cartilaginous rings in the trachea and bronchi? 7. Why do the cartilaginous rings not form a complete circle in the trachea? Draw a transverse section and a sagittal section that shows how the trachea and esophagus are positioned relative to one another 8. 9. Look carefully at the left and right primary bronchi. How are they different? If food is aspirated, which bronchus is the food most likely to get stuck in? Explain 10. In addition to classifying the respiratory anatomy according to location (upper and lower respiratory tract), we also classify respiratory anatomy according to function-the conducting and respiratory divisions. What is the essential difference between them Conducting division: Respiratory division: -94- seen with the la (c) Abduction ol b) Epiglotis iold AhwhExplanation / Answer
Q 2 both right and left lungs are of different shape and size .
Right lung having 3 lobes upeer middle and lower lobe divided by 2 fissue oblique and horizontal fissure.
Left lung are smaller in size and capacity because they accomodate heart on left side so left lung not having middle lobe but left lung have cardiac notch and lingula.
Q 3 pleural membrane provide - negative intra pleural pressure it contain pleural fluid that help in attachment of lung with the ribs cage and expand during inspiration.
Pleura membrane provide protective covering around lungs.
Pleural membrane maintain lungs in expanded position otherwise they collapse due to their elastic recoil.
Q4 lungs don't have property of expansion but they have tendency to collapse due to elastic tissue of lung..they tend to recoil and this recoil is prevent by pleural cavity fluid. And pleural membrane.
Ribs cage have property of expansion they are regulated by muscles of thorax.
Q5 when we swallow actually epiglottis doesn't move but larynx uplifted and meet with epiglottis.
This function is assesed by soft palate and uvula......both of these play main role in prevention of food into larynx.
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