179th answer pls

179th answer pls (1) Bicuspid valve (2) Mitral valve (3) Tricuspid valve (4) Both (1) and (2) 179. Respiratory rhythm centre is present in (2) Pons varoli (1) Cerebrum (3) Medulla oblongata (4) Cerebellum 80 .Total volume of air that will remain in the lung normal expiration is known as (1) Residual volume

Dear student, Respiratory control centers are located in the medulla and the pons. In the medulla the ventral respiratory group contains rhythm generators whose output drives respiration. Also in the medulla, the neurons of the dorsal respiratory group integrate peripheral sensory input and modify the rhythms generated by the VRG. The pons respiratory centers interact with the medulla centers to smooth the breathing pattern. The respiratory center (RC), itself, is located in the medulla oblongata, the lowermost portion of the brainstem. So the answer is (3) medulla oblongata