Basics Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

How many neurons does the human brain have?

A

86 billion

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2
Q

Do we use all of our neurons?

A

yes

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3
Q

How many people face neurological or psychiatric conditions?

A

1/4

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4
Q

In order to communicate, the _____ is transformed into a chemical message, which crosses the gap, called a ____. The release of chemical messengers can trigger a second action potential in the neuron on the other side of the synapse, conveying the message onward or, when the action potential triggers the release of a chemical messenger that blunts the transmission of a signal, quelling the message.

A

action potential, synapse

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5
Q

_____ carry signals from sense receptors to your
brain.

A

Sensory circuits

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6
Q

____ sends commands to your muscles

A

Motor circuits

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7
Q

____ carry out automatic reflexes

A

Simple circuits

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8
Q

____ are required for higher level activities like memory, decision making, and perceiving the world around you

A

Complex circuits

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9
Q

When do circuits arise?

A

Before birth

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10
Q

Experiences make simple circuits to ____ circuits

A

Complex

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11
Q

Most of those will stick around for the rest of your life, yet your brain is constantly changing.

A

Plasticity

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12
Q

Learn a new skill or language and your brain reacts by strengthening or weakening the connections between ____.

A

neurons

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13
Q

Early in life, the brain eliminates those extra cells, keeping only those connections you need in a process.

A

synaptic pruning

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14
Q

Compared with other animals, the human brain possesses an enormous _____ that is brimming with neural circuits dedicated to language.

A

cerebral cortex

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15
Q

3 lobes of the brain dedicated to interpreting language

A

temporal, parietal, frontal

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16
Q

The brain runs on how many watts of electricity that is enough to power an LED light?

A

25

17
Q

How many types of neuron in our brain?

A

10,000

18
Q

Medication for Parkinson’s disease

A

L-dopa

19
Q

Medication for depression

A

Selective Serotonin Reuptake Inhibitors (Prozac)