CH 1.1 Key Terms Flashcards

1
Q

Active Transport

A

A protein-mediated process that expends energy to enable a molecule to cross a membrane

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2
Q

Afferent Axon

A

Axon that brings information into a structure

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3
Q

Astrocytes

A

Star-shapes glia that synchronizes the activity of the axons

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4
Q

Axon

A

Thin Fiber of constant diameter; The neuron’s information sender

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5
Q

Blood-Brain Barrier

A

Mechanism that excludes most chemicals from the brain

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6
Q

Cell Body, or Soma

A

Structure containing the nucleus, ribosomes and mitochondria

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7
Q

Dendrites

A

Branching fibers from a neuron that receive information from other neurons

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8
Q

Dendritic Spines

A

Short outgrowths that increase the surface area available for synapses

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9
Q

Efferent Axon

A

Neuron that carries information away from the structure

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10
Q

Endoplasmic Reticulum

A

Network of thin tubes that transport newly synthesized proteins to other locations

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11
Q

Glia

A

Type of cell in the nervous system that, in contrast to neurons, does not conduct impulses over long distances

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12
Q

Glucose

A

A simple sugar

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13
Q

Interneuron

A

Neuron whose axons and dendrites are all confined within a given structure

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14
Q

Intrinsic neuron

A

Neuron whose axons and dendrites are all confined within a given structure

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15
Q

Membrane

A

Structure that separates the inside of the cell from the outside environment

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16
Q

Microglia

A

Cell that removes waste material and other microorganisms from the nervous system

17
Q

Mitochondrion

A

Structure that performs metabolic activities

18
Q

Motor Neuron

A

Neuron that relieves excitation from other neurons and conducts impulses to a muscle

19
Q

Myelin Sheath

A

Insulating material that covers vertebrate axon

20
Q

Neurons

A

Cell that receive information and transmit it to other cells

21
Q

Nodes of Ranvier

A

Interruptions in the myelin sheath of vertebrate axons

22
Q

Nucleus

A

Structure that contains the chromosomes

23
Q

Oligodendrocytes

A

Glia cells that build myelin sheaths

24
Q

Presynaptic Terminal

A

(End bulb or bouton) point where an axon releases chemicals

25
Q

Radial Glia

A

Cells that guide the migration of neurons and the growth of axons and dendrites during embryological development

26
Q

Ribosomes

A

Sites for cell synthization of new protein molecules Ritalin.

27
Q

Schwann Cells

A

Glia cells that build myelin sheaths

28
Q

Sensory Neuron

A

Neuron that is highly sensitive to a specific type of stimulation

29
Q

Thiamine

A

B1 vitamin, necessary to use glucose