Exam 3 Part 5

Question 1

Autonomic nervous system

Answer 1

involuntary; conveys info from CNS to:
smooth muslce in organs, blood vessels, respiratory system
cardiac muscle (affects rate)
glands (sweat, salivary, some endocrine)

Question 2

SNS vs ANS

Answer 2

sensory neurons-same: carry signal from PNS receptor to CNS

motor neurons are different

Question 3

SNS motor neurons

Answer 3

1 neuron from CNS to effector (skeletal muscles)

Question 4

ANS motor neurons

Answer 4

2 neurons
preganglionic neuron -axon extends from CnS to autonomic ganglion
glanglionic neuron-axon extends from autonomic ganglion to effector (smooth muscle or gland) or cardiac muscle

Question 5

autonomic ganglia

Answer 5

located in head, neck, abdomen, and in chains along either side of spinal cord; synapses occur here
benefit: better communication and central

Question 6

ANS divisions

Answer 6

has 2 divisions that differ in origin of preganglionic neurons and location of autonomic ganglion
sympathic and parasympathetic