nervous

Question 1

it has led to the differentiation of cells in which the capacity of excitability is particularly announced

Answer 1

phylogenetic development

Question 2

a mass of villi that originate from the trls choroidea and form fuzzy tuft of epithelium that extends into brain vesicles

Answer 2

choroid plexus

Question 3

fundamental functional units of nervous

Answer 3

neurons

Question 4

the expa ded part of the nueron

Answer 4

perikaryon

Question 5

shorter and thicker than axons

Answer 5

dendrites

Question 6

junction where a neuron communicates with another neuron kr an effector cell

Answer 6

synapse

Question 7

single long process arises from the bulging portion of cell body

Answer 7

axon

Question 8

bulging portion of cell body

Answer 8

axon hillock

Question 9

the end of the axon which gives off terminal branches called

Answer 9

telodendron

Question 10

a chemical released by telodendron which acts on a membrane

Answer 10

neurotransmitter

Question 11

an axon is enveloped by one fold of plasma membrane of neurolemmal cells

Answer 11

unmyelinated nerve fiber

Question 12

an axin enveloped by plasma membrane of olidodendrocytes or neurolemmocytes that wraps spirallt around it several times to form lipid rich myelin sheath

Answer 12

myelinated nerve fiber

Question 13

myelination starts when

Answer 13

point where axon emerges from axon hillock

Question 14

rhe myelon sheath is discontinues at interval called

Answer 14

myelin node (node of ranvier)

Question 15

bulb like junction between 2 adjacent neurolemmal cells

Question 16

areas of axon covered by myelin sheath are called

Answer 16

internodes

Question 17

sites of impulse propagation snd saltatory conduction

Answer 17

internodes

Question 18

cytoplasmic region of myelin between internode and the node kf ranvier

Answer 18

paranode

Question 19

an area of loosening of the myelin sheath

Answer 19

schimdt-lanterman

Question 20

keeps the transmembrane potential at normal levels

Answer 20

sodium potassium pump

Question 21

epithelial cells of fhe neural tube differentiates into

Answer 21

bipotential progenitor celss

Question 22

multipolar neurons that comprise the majority if neurons in body

Answer 22

transmission

Question 23

what does the secretory neurons secrete

Answer 23

oxytocin and antidiuretic

Question 24

protects supports and supply nourishment ro the nervous tissue

Answer 24

neuroglial cells