Stimulates exocrine glands decreases heart rate and

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: rs? Acetycholine Cholinergic receptors Cholinergic Respond to Acetylcholine • Muscarinic = Parasympathetic – Contracts smooth muscle • Exception: blood vessels & sphincters • Eye NOT an exception – not considered a sphincter – “sphincter” muscle contracts causing the pupil to constrict. – Stimulates exocrine glands – Decreases heart rate and sometimes contractility Note: peripheral blood vessels dilated with muscarinic Compare with parasympathetic responses on chart Question: Where else is Ach released? Acetycholine Acetycholine Acetycholine Cholinergic receptors Cholinergic Respond to Acetylcholine • Nicotinic – Stimulates both sympathetic and parasympathetic ganglia – Stimulates adrenal medulla • sympathetic-like effect – Stimulates neuromuscular junction • voluntary system NOTE: Seems to have many side effects --so why use at all? Complete Chart Top Page 42 Assignment Page 46 Assignment • First, what do we mean by “tone” with regards to the nervous system? Not to turn in… to work from...
View Full Document

Ask a homework question - tutors are online