Autonomic Nevous system

Question 1

Autonomic Nervous System(ANS)

Answer 1

1) Involuntary (without conscious) 2) Motor and Sensory 3) Smooth muscle Cardiac and glands 4) Help maintain homeostasis

Question 2

Where is the Autonomic System regulated

Answer 2

Hypothalamus and brain stem

Question 3

Somatic VS Autonomic

Answer 3

1) Somatic sends nerve impulse to skeletal muscle. 2) Autonomic cardia; smooth tissue AND 2 Motor neurons (presynaptic and post synaptic at the ganglion)

Question 4

Preganglionic VS Postganglionic

Answer 4

Preganglionic always release acetylcholine and is myelinated POST: Release acetylcholine and norepinephrine and is Unmyelinated

Question 5

Sympathetic and Parasympathetic (motor)

Answer 5

Motor(efferent) portion is divided into sympathetic and parasympathetic portions Most organs are innervated by both

Question 6

Parasympathetic

Answer 6

1) Craniosacral division(leave at cranial or sacral) 2) resting and digesting branch (conserves energy) 3) Long preganglionic neuron 4) Ganglia CLOS to effector ORGAN

Question 7

Parasympathetic Ganglia two types

Answer 7

1) Terminal is close to the organ 2) intramural(within visceral organ)

Question 8

Sympathetic

Answer 8

1) Thoracolumbar division 2) Fight of Flight (stress) 3) Short preganglionic axon 4) Ganglia are close to Spinal Cord

Question 9

What do preganglionic parasympathetic form?

Answer 9

Plexus

Question 10

Sympathetic Ganglia Form

Answer 10

Form sympathetic trunk(chain ganglia) (paravertebral) and Prevertebral(Further from spinal cord)

Question 11

White rami in sympathetic

Answer 11

White rami communicantes connects anterior rami w/ sympathetic trunk ganglia

Question 12

Gray rami communicants (sympathetic)

Answer 12

Has Post ganglion fibers connecting sympathetic trunk ganglion to spinal nerve

Question 13

Splanchnic Nerves

Answer 13

Pass through ganglia without terminating

Question 14

Cholinergic Neurons release from what?

Answer 14

1) ALL Neurons release Ach a) all preganglionic neurons b) all parasympathetic postganglionic neurons c) Sympathetic preganglionic innervating sweat glands

Question 15

Types of receptors in Cholinergic

Answer 15

Nicotinic(excitation)(NMJ) 2) Muscarinic (excitation or inhibition)(heart)

Question 16

Adrenergic Neurons

Answer 16

Release norepinephrine(NE) 2)Most sympathetic postganglionic neurons(not sweat)

Question 17

Adrenergic Receptors

Answer 17

Alpha-1 Alpha 2 and Beta 1 and Beat-2 Excitation of inhibition depends on receptor subtype

Question 18

Spinal nerve pathway

Answer 18

Synapses in sympathetic trunk ganglion with the postganglion neuron and go back throw the grey ramus

Question 19

Postganglionic sympathetic nerve pathway

Answer 19

Preganglionic neuron pass synapses in the sympathetic trunk the pass out direct to the effector organ(no grey ramus)

Question 20

Splanchic nerve pathway

Answer 20

Preganglionic axons pass through the sympathetic trunk ganglia without synapsing. The then synapse in preverebral ganlion to form Postganglionic axon to effector organ

Question 21

Adrenal medulla pathway

Answer 21

Kidney- Preganglionic axon passes threw the sympathetic trunk and preverebral ganglion into effector organ. (Fast) epinephrine and norepinephrine.