Nervous System cards

Question 1

Neurons

Answer 1

Bundle of axons in peripheral nervous system

Question 2

Neuroglia

Answer 2

Specialized cells

Functions:
Maintain ionic environment 
Provide growth factors 
Structural support 
Cell to cell communication

Question 3

Synapse

Answer 3

Space between axon of presynaptic neuron and dendrites of post synaptic neuron

Question 4

Neurotransmitters

Answer 4

Chemical messenger that stimulates an effector

Question 5

Central Nervous System

Answer 5

Brain and Spinal Cord

Question 6

Peripheral Nervous System

Answer 6

Parts of nervous system outside brain and spinal cord

Question 7

Sensory receptors

Answer 7

Specialized structure associated with the peripheral end of a sensory neuron specific to detecting a particular sensation and triggering an impulse in response

Question 8

Somatic Nervous System

Answer 8

Motor pathways of peripheral nervous that lead to skeletal muscles

Question 9

Autonomic Nervous System

Answer 9

Part of Nervous System that controls the viscera

Question 10

Synaptic Cleft

Answer 10

A narrow extracellular space between the cells at a synapse.

Question 11

Oligodendrocytes

Answer 11

Type of neuroglia in the CNS that produces myelin

Question 12

Schwann Cells

Answer 12

Type of neuroglia that surrounds an axon of a peripheral neuron forming the neurilemma and myelin

Question 13

Sensory Neuron

Answer 13

Conducts impulse from a receptor to CNS

Question 14

Motor Neuron

Answer 14

Conducts impulses from the CNS to an effector

Question 15

Astrocyte

Answer 15

Maintain Blood brain barrier

Connects neurons to blood vessels

Question 16

Microglia

Answer 16

Support neurons and phagocytize bacteria and cellular debris

Question 17

Ependymal

Answer 17

Line the ventricles of the brain

Makes cerebral spinofluid

Question 18

Satellite Cells

Answer 18

Glia in PNS that support neurons

Question 19

Hyperpolarization

Answer 19

When too much K+ rushes out of the cell

Question 20

Membrane potential

Answer 20

Charge in it

Question 21

Resting potential

Answer 21

At -70mV

When cell isn’t sending signals

Question 22

Action potential

Answer 22

Sequence of electrical charges in part of a nerve cell

Question 23

Depolarization

Answer 23

When Sodium rushes into the cell

Question 24

Threshold Potential

Answer 24

At -55mV

Minimum amount of charge needed to generate action potential

Question 25

Refractory period

Answer 25

Time after an action potential before another action potential can be generated