Transmission. Flashcards

1
Q

nerves are high _____

A

excitable

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2
Q

nerve impulses are always _____ _____ regardless of the stimulus

A

the same

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3
Q

what is required to separate opposite charges across a membrane?

A

energy

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4
Q

energy is _____ when charges move toward one and other

A

liberated

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5
Q

if opposite charges are separated the system has_____ ______

A

potential energy

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6
Q

What are the 2 types of ion channels

A

Leakage

gated

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7
Q

Name the 3 types of gated channels

A

Chemically gated
Voltage-Gated
Mechanically Gated

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8
Q

what is the second name for chemically gated channels

A

ligand-gated

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9
Q

Chemically gated channels are located where?

what do they respond to?

A

dendrites and cell bodies of a neuron

neurotransmitters

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10
Q

Ions flow down their ______ _____

A

concentration

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11
Q

flowing down a concentration gradient means?

A

ions flow to areas of low concentration

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12
Q

Chemically (ligand) gated ion channels are involved in what type of potentials?

A

graded potential

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13
Q

Voltage-gated respond to a voltage _____ _____ _____ threshold (voltage) aka they need a specific ____ or _____ to be reached

A

at a specific

voltage or charge

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14
Q

Voltage-gated channels are located near the _____ _____ of neurons and also along the _____ of neurons

A

axon hillock

axons

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15
Q

Voltage-gated channels are involved in ______ potentials

A

action

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16
Q

what is the body’s primary method of communication?

A

action potentials

17
Q

what electrical current travels long distances? what Chanel does this method use

A

action potentials

voltage-gated