Question

The trachea develops from the following structure:

	a.	Lung bud
	b.	Bulbus cordis
	c.	Respiratory diverticulum
	d.	Sinus venosus

Answer 1

Option C-Respiratory diverticulum

Lung bud refers to Respiratory Bud that is developed from the Respiratory diverticulum.

Respiratory diverticulum is an embryological endodermal structure from which respiratory tract organs like larynx, trachea, bronchi and lungs are devoloped .

**Bulbus cordis- Bulbus cordis is the bulb of the heart that lies ventral to primitive ventricle .Bulbus cordis together with primitive ventricle give rise to the ventricles of heart.

**Sinus venosus- Sinus venosus is a large quadrangular cavity present in the chordate heart which precedes the atrium on the venous side of heart.