3,811
edits
Lab 7: Vertebrate Anatomy: Difference between revisions
From OpenWetWare
Jump to navigationJump to search
→Comparative Adult Anatomy of Systems in Vertebrates
| Line 214: | Line 214: | ||
<br> | <br> | ||
Observe the gills and/or lungs in the specimens. What traits are typical of respiratory structures (gills/lungs) in general? For example, do they appear to have thick membranes? Do they have many blood vessels running over/through them? What medium (water, air, or both) is used by the organism to obtain oxygen?<br> | |||
How does each animal make contact between the respiratory medium (air/water or both) and their respiratory structures? Identify the specific parts of the respiratory system that participate in gas exchange between the external environment and the circulatory system?<br> | |||
Compare the lungs of the snake to the lungs of the rabbit. Are both lobes of the lung of equal relative size in both organisms? Observe the area immediately under the lungs in the rabbit and you will see the muscular diaphragm similar to the one found in the fetal pig. Movement of this muscle helps to take in air during inhalation and expire air from the lungs during exhalation. Does the snake have a similar structure? If not, why do you think this structure is not present and how does the snake inhale and exhale? <br> | |||
Compare the lungs of the snake to the lungs of the rabbit. Are both lobes of the lung of equal relative size in both organisms? Observe the area immediately under the lungs in the rabbit and you will see the muscular diaphragm. Movement of this muscle helps to take in air during inhalation and expire air from the lungs during exhalation. Does the snake have a similar structure? If not, why do you think this structure is not present and how does the snake inhale and exhale? <br> | |||
What structure(s) in addition to gills and lungs might be considered gas exchange tissues? Do you think any of the organisms might use such alternative methods of respiration? <br> | What structure(s) in addition to gills and lungs might be considered gas exchange tissues? Do you think any of the organisms might use such alternative methods of respiration? <br> | ||
