What are the pharmacological properties and therapeutic uses of atropine and adrenaline in veterinary medicine?

Atropine is a drug that blocks the action of the parasympathetic system by competing for muscarinic receptors, while adrenaline stimulates both alpha and beta adrenergic receptors.
Atropine is used as a pre-anesthetic medication to prevent myocardial depression and atrioventricular block, while adrenaline is used to increase heart rate and blood pressure.
Atropine has a direct effect on the heart, causing an increase in heart rate and cardiac output, while adrenaline has no effect on the heart.
Adrenaline is used to treat bronchospasm and reduce gastric secretions, while atropine is used to reduce bronchial secretions and increase bladder tone.