Answer:
The organ of the respiratory system are Nose, Trachea,Bronchus,Larynx,Paranasal sinuses,Lung,Pulmonary,alveolus,Pharynx,Bronchiole,Nasal cavity,Epiglottis,diaphragm
The Thalamus acts as a relay station in the brain!
Answer:
One muscle flexes while the other extends
Explanation: