Full Hearing. Dr. Ruben explains that kittens should fully hear and start responding to sounds, as well as sights, around 25 days after birth. At this point you might notice that baby Rascal perks up his ears when you mimic his high-pitch meowing noise or turns his head when his littermates start crying.
Anticholinergics are a class of drugs that block the action of the neurotransmitter acetylcholine in the brain. They are used to treat diseases like asthma, incontinence, gastrointestinal cramps, and muscular spasms.
Cholinergic drugs usually act in one of two ways. Some directly mimic the effect of acetylcholine, while others block the effects of acetylcholinesterase. Acetylcholinesterase is an enzyme that destroys naturally occurring acetylcholine. By blocking the enzyme, the naturally occurring acetylcholine has a longer action.