Lecture Unit 2 Ch 15

Question 1

Somatic nervous system

Answer 1

Both sensory and motor neurons. Sensory = touch, pain, temperature, sight, hearing, taste, smell
Motor = innervate skeletal muscles

Question 2

Autonomic nervous system

Answer 2

Receives input from sensory receptors located in organs, blood vessels, muscles

Question 3

What are the 2 motor neurons in the autonomic motor pathway

Answer 3

Preganglionic neuron and postganglionic neuron

Question 4

Two divisions of autonomic nervous system

Answer 4

Sympathetic (flight or fight) and parasympathetic (rest and digest)

Question 5

Describe sympathetic nervous system

Answer 5

increased alertness and metabolism, ready for emergency

Question 6

Describe parasympathetic nervous system

Answer 6

slows down most body activity

Question 7

Preganglionic

Answer 7

cell body in the brain or spinal cord

Question 8

Postganglionic

Answer 8

cell body and dendrites located in autonomic ganglion

Question 9

2 categories of Autonomic neurons

Answer 9

cholinergic or adrenergic

Question 10

What do cholinergic neurons release

Answer 10

acetylcholine

Question 11

What do cholinergic receptors include

Answer 11

nicotinic receptors and muscarinic receptors

Question 12

What do adrenergic neurons release

Answer 12

norepinephrine (noradrenalin)

Question 13

a1

Answer 13

sits in heart, excites (flight or fight)

Question 14

a2

Answer 14

sits in SI, inhibits (relaxing)

Question 15

B1

Answer 15

exciting, betablocker (calms down BP or heart rate)

Question 16

B2

Answer 16

relaxing

Question 17

What does autonomic reflexes control

Answer 17

heart rate, bp,

Question 18

What is the reflex arc composed of

Answer 18

receptor, sensory neuron, integrating center, motor neurons and effector

Question 19

autonomic dysreflexia

Answer 19

abnormal, overreaction to stimulation in involuntary (autonomic) nervous system