Chapter 7 terms

Question 1

Somatic

Answer 1

somatic (conscious control)- CNS to skeletal muscle(motor nerves), cranial nerves, spinal nerves

Question 2

Soma

Answer 2

Cell body (perikaryon or soma)• in CNS typically polygonal; in PNS round

Question 3

Inclusions

Answer 3

melanin granules (a potential by-product of DOPA, the precursor to dopamine and noradrenaline), lipofuscin granules (yellowish), and lipid droplets

Question 4

Spines

Answer 4

dendrites have spines that form synapses with other neurons

Question 5

Axon hillock

Answer 5

Axon hillock - pyramid-shaped region at soma/axon junction

Question 6

Initial segment

Answer 6

Initial segment - the region between axon and myelin sheath (AP)

Question 7

refractory period

Answer 7

Refractoriness is the fundamental property of any object of autowave nature not to respond on stimuli, if the object stays in the specific refractory state

Question 8

Ganglia

Answer 8

aggregates of cell bodies (somas) located outside the CNS

Question 9

Node of Ranvier

Answer 9

a gap in the myelin sheath of a nerve, between adjacent Schwann cells.

Question 10

Interneuron

Answer 10

Interneurons-connect neurons in a chain