Dorsal respiratory group and Ventral respiratory group

Read the following four statement carefully. (i) Ventral respiratory group of neurons of medulla oblongata can cause both inspiration and expiration. (ii) The part of the respiratory system starting with the external nostrils up to the terminal bronchioles constitutes the respiratory or exchange part of the respiratory system. (iii) During swallowing epiglottis can be covered by a thin elastic cartilaginous flap called glottis to prevent the entry of food into the larynx. (iv) Binding of oxygen with haemoglobin in primarily related of oxygen with haemoglobin is primarily related to partial prssure of O_(2) . Which of the above two statement are correct ?

Dorsal root and Ventral root of spinal cord

Respiratory pathway is

Respiratory pathway is

What are respiratory roots ?

Respiratory tree occurs in

Respiratory tree occurs in

Respiratory Volumes and Capacities

Respiratory organs of whale are

The Drosal Respiratory group (DRG) is located