Chapter3the autonomic nervous systemIII.CHEMICALSIGNALINGBETWEENCELLSA.Local mediatorshistamine and prostaglandinsSecrete chemicals.Act on cells intheirimmediate environmentChemicalsarerapidlydestroyed orremovedB.hormonesSpecialized endocrine cells secrete hormones into the blood streamc.neurotransmitters
the autonomic nervous system Chapter 3 III. CHEMICAL SIGNALING BETWEEN CELLS A. Local mediators histamine and prostaglandins B. hormones c. neurotransmitters Secrete chemicals, Act on cells in their immediate environment Chemicals are rapidly destroyed or removed Specialized endocrine cells secrete hormones into the blood stream
Chapter3the autonomic nervous systemAutonomicneurotransmittersCommunication between nerve cells and between nerve cellsand effector organs occurs through the release of specificchemical signal.Neurotransmission occurs at three major sites:1)Preganglionic synapses inbothparasympathetic andSympatheticganglia2)Parasympatheticandsympatheticpostganglionicneuroeffector junctions3)All somaticmotorend pates on skeletalmuscle
the autonomic nervous system Chapter 3 Communication between nerve cells and between nerve cells and effector organs occurs through the release of specific chemical signal. Autonomic neurotransmitters Neurotransmission occurs at three major sites: 1) Preganglionic synapses in both parasympathetic and sympathetic ganglia 2) Parasympathetic and sympathetic postganglionic neuroeffector junctions 3) All somatic motor end pates on skeletal muscle