Diaphragm is found in

Choose the correct sentences for the conducting part of the respiratory system.
$(I)$ Transports the atmospheric air to the alveoli.
$(II)$ Clears it from foreign particles.
$(III)$ Humidifies the air.
$(IV)$ Brings the air to body temperature.

Intercostal muscles are found in ...........

In humans,the oblique fissure is present in

Where is mucus found in the human body?

The $Larynx$ is present between: