Question

The diaphragm is present in which of the following?

• A. Ostrich
• B. Crocodile
• C. Frog
• D. Cat

Answer 1

Answer: (D)

Cat

• The diaphragm is a thin skeletal muscle that is present at the base of the thoracic cavity. It separates the thoracic cavity from the abdominal cavity. It alters the volume of the thoracic cavity.
• The presence of the diaphragm is a characteristic feature of mammals.
• Ostrich belongs to class Aves and the frog belongs to class Amphibia.
• The crocodile is a reptile. However, has a structure known as diaphragmaticus muscle which aids in respiration but is not similar to that of the diaphragm.

So, the correct answer is option D.