Which of the following system is most sensitive to atropine
Ref: HL Sharma 3rd ed: Pg no:154 The endpoint for atropinization is dried pulmonary secretions. Tachycardia and mydriasis must not be used to limit or to stop subsequent doses of atropine
Respiratory mucosa
Hea
Pupil
Gastrointestinal motility
Autonomic nervous system