The is the part of the peripheral nervous system that directs the activity of glands, organs, and smooth muscles.

autonomic nervous system

Explanation:

The autonomic nervous system is the part of the peripheral nervous system responsible for the control and regulation of the unconscious and involuntary body functions, which is achieved through the control of the activities of the glands, internal organs and smooth muscles. The autonomic nervous system which is further dived into the sympathetic and the asympathetic nervous system, regulates heart rate, digestion, sexual arousal, respiratory rate as well as pupillary response

what's the question?

it would lead to upper respiratory infections and pneumonia.