Autonomic Nervous System: Structures, Neurotransmitters, and Responses, Quizzes of Biology

Download Autonomic Nervous System: Structures, Neurotransmitters, and Responses and more Quizzes Biology in PDF only on Docsity! TERM 1 Sympathetic Structure DEFINITION 1 part of autonomic nervous system sympathetic chain ganglia parallel spinal cord input form cord, medulla, hypothalamus no direct cortical control TERM 2 Preganglionic Neurons DEFINITION 2 Short neurons used acetylcholine (Ach) as NT to post-ganglionic neurons in ganglia TERM 3 Postganglionic Neurons DEFINITION 3 long neurons activated by pre-ganglionic neurons use norepinephrine (NE) as neurotransmitter adrenal medulla behaves like post ganglionic neuron TERM 4 Sympathetic Responses DEFINITION 4 response to emergencies TERM 5 Fight or Flight response DEFINITION 5 designed to remove danger (increased) blood flow to skeletal muscle and heart concurrent activation of motor units (decreaed) activity of digestive and related functions TERM 6 Receptor types DEFINITION 6 all bind NE from post ganglionic neurons TERM 7 Alpha DEFINITION 7 (adrenergic receptors) causes increase in tissue activity alpha 1--> (increased) IP3--> (increased) Ca++ release from sacroplasmic reticulum --> (inc.) Ca++ alpha 2--> (dec.) cAMP--> (dec) Ca++pump --> Net (inc) Ca++ TERM 8 Beta 1 DEFINITION 8 adrenergic receptor increase Ca++ in heart-- open Ca++ channels increase heart activity TERM 9 Beta 2 DEFINITION 9 (inc) cAMP --> (inc) Ca++ pumps --> (dec) Ca++ (dec) blood vessel contraction and (dec) lung bronchiole constriction = more blood, more air TERM 10 Parasympathetic Structure DEFINITION 10 two neuron series- all neruons use Ach at NT cholingeric activation controls day to day, homeostatic maintenance