In development, eustachian tube is

Options

A. Ectodermal
B. Mesodermal
C. Endodermal
D. Both mesodermal and endodermal

Answer

C

Explanation

Derivatives of Endoderma
1. Respiratory system (Lungs, trachea and bronchi)
2. Liver, Pancreas, gall bladder
3. Urinary bladder and urethra
4. Thymus, thyroid and parathyroid gland
5. Eustachian tube
6. Middle ear
7. Larynx, tonsils, vagina
8. Jaw bones
9. Cowper.s gland
10. Epithelium of mouth, tongue, pharynx, oesophagus, stomach, small and large intestine