Lecture 15- autonomic control

Question 1

somatic efferent pathways

Answer 1

1 neuron
innervates skeletal muscle
always excitatory

Question 2

autonomic efferent pathways

Answer 2

2 neurons
innervates smooth and cardiac muscle, glands, GI tract
can be excitatory or inhibitory

Question 3

sympathetic nervous system

Answer 3

short, long neuron
Ach, NE neurotransmitters
Cholinergic and Adrenergic neurons

Question 4

Parasympathetic nervous system

Answer 4

long, short neuron
Ach, Ach neurontransmitters
Cholinergic neurons

Question 5

ionotropic receptors

Answer 5

receptors which contain an ion channel
nicotinic cholinergic
depolarising and excitatory

Question 6

metabotropic receptors

Answer 6

receptors linked to intracellular metabolic messengers
muscarini cholinergic
alpha and beta adrenergic
depolarising or hyperpolarising

Question 7

dual innervation 2 divisions

Answer 7

e.g eye dual control

Question 8

innervation 1 division

opposing effects without dual innervation

Answer 8

e.g blood vessels

changes in tone