IB Biology Topic C2.2.1 Neurons as Cells Within the Nervous System That Carry Electrical Impulses Revision Notes (SL/HL)

IB Biology Topic C2.2.1 Neurons as Cells Within the Nervous System That Carry Electrical Impulses Revision Notes (SL/HL) | RevisionDojo

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Neurons Are Specialised Cells That Carry Electrical Impulses Through the Nervous System

Neurons are specialised cells of the nervous system that carry electrical impulses.
Their structure lets them receive, integrate, and send signals rapidly.

Analogy

When you touch a hot stove, your hand pulls away almost instantly.
That speed is possible because neurons carry electrical impulses across your body.

A Neuron Has Three Main Parts, Each Matched to a Job

A neuron consists of dendrites, a cell body, and an axon.
The dendrites are short branched fibres that receive signals from other neurons or sensory receptors.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

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Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

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Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Neurons Are Specialised Cells That Carry Electrical Impulses Through the Nervous System

Neurons are specialised cells of the nervous system that carry electrical impulses.
Their structure lets them receive, integrate, and send signals rapidly.

Analogy

When you touch a hot stove, your hand pulls away almost instantly.
That speed is possible because neurons carry electrical impulses across your body.

A Neuron Has Three Main Parts, Each Matched to a Job

A neuron consists of dendrites, a cell body, and an axon.
The dendrites are short branched fibres that receive signals from other neurons or sensory receptors.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

Unlock the rest of this chapter with a free account

End of article

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic C2.2.1: Neurons as Cells Within the Nervous System That Carry Electrical Impulses Notes

Neurons Are Specialised Cells That Carry Electrical Impulses Through the Nervous System

A Neuron Has Three Main Parts, Each Matched to a Job

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Neurons Are Specialised Cells That Carry Electrical Impulses Through the Nervous System

A Neuron Has Three Main Parts, Each Matched to a Job

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics