Neurons

Question 1

Size varies of Cell body or Perikaryon

Answer 1

5-14 um

Question 2

Extensively branching from the cell body.

Answer 2

Dendrites

Question 3

Excite or inhibit neurons.

Answer 3

Neurotransmitters

Question 4

Present in all axons; cover of nerve fibers.

Answer 4

Neurillema sheath

Question 5

Present in some axons.

Answer 5

Myelin sheath

Question 6

Site at which neurons communicate.

Answer 6

Synapse

Question 7

Signals pass across synapse in one direction.

Answer 7

Synapse

Question 8

2 Synapses of Neuron

Answer 8

1. Presynaptic neuron
2. Postsynaptic neuron

Question 9

Conducts signal toward a synapse (first neuron).

[synapse neuron]

Answer 9

Presynaptic neuron

Question 10

Transmits electrical activity away from a synapse (second neuron)

[synapses neuron]

Answer 10

Postsynaptic neuron

Question 11

Between axon terminals of one neuron and dendrites of another.

[types of synapses]

Answer 11

Axodentric

Question 12

Between axons and neuronal cell bodies.

[types of synapses]

Answer 12

Axosomatic

Question 13

Layer of delicate connective tissue surrounding the axon.

[nerves]

Answer 13

Endonerium

Question 14

Groups of axons bound into bundles.

[nerves]

Answer 14

Nerve facsicles

Question 15

Connective tissue wrapping surrounding nerve fascicle.

[nerves]

Answer 15

Perineurium

Question 16

Whole nerve is surrounded by tough fibrous sheath.

Answer 16

Epineurium