I'm confused about unit 2

can someone please give me a brief summary?

Hey! Riya here! What specifically on Unit 2 would you like a summary of? If you want a summary of everything, check out this: https://app.fiveable.me/ap-psych/unit-2?q=study-guides!

hi im confused on how messages are sent
dendrites, cell body axon, myelin sheath etc

Ok! I’ll try to explain this! So…

A neuron has three main parts.

The cell body directs all activities of the neuron. Dendrites extend out from the cell body and receive messages from other nerve cells. An axon is a long single fiber that transmits messages from the cell body to the dendrites of other neurons or to other body tissues, such as muscles. A protective covering called the myelin sheath, covers most neurons. Myelin insulates the axon and helps nerve signals travel faster and farther.

Messages travel along a single neuron as electrical impulses, but messages between neurons travel differently. The transfer of information from neuron to neuron takes place through the release of chemical substances into the space between the axon and the dendrites. These chemicals are called neurotransmitters, and the process is called neurotransmission. The space between the axon and the dendrites is called the synapse.

When neurons communicate, an electrical impulse triggers the release of neurotransmitters from the axon into the synapse. The neurotransmitters cross the synapse and bind to special molecules on the other side, called receptors. Receptors are located on the dendrites. Receptors receive and process the message.

Does this make sense?

it makes perfect sense thank you so much!

No problem!

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