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Solution


Q.

Identify which respiratory structure possesses the following features and choose the correct option accordingly
I. Found in mammals
II. Highly muscular and fibrous partition, elevated towards the thorax like a dome
III. Separates thoracic and abdominal cavity
 a) Pleural membrane            b) Phrenic muscle                    c) Diaphragm                d) Mediastinum
1 A
2 B
3 C
4 D

Ans.

c) Diaphragm is a characteristic of mammals. It is highly muscular and fibrous partition, elevated towards the thorax like a dome. Its important function is to aid in respiration. It separates the thoracic and abdominal cavities. It is also called phrenic muscle