This is an activity I usually carry out for lesson on part of respiratory system- Model making using straws.
Straws of various sizes and Q-tips are provided foe them to make the model. 37 more words
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Pictures are of unknown organism but possible from small mammals. The relationship between the trachea and esophagus can be seen in the third one. The “C” shape cartilage ring that form most of the trachea and the trachealis muscle at the back can be seen in some of the pictures. 46 more words