unit5 lesson 2 answers conexes

Answer 1

1. What are the three main components of a neuron?
- Dendrites, cell body, axon

2. What is the role of dendrites in a neuron?
- Dendrites receive signals from other neurons and transmit them to the cell body.

3. What is the purpose of the myelin sheath?
- The myelin sheath helps speed up the transmission of signals along the axon.

4. What is the function of neurotransmitters?
- Neurotransmitters are chemical messengers that transmit signals across synapses from one neuron to another.

5. What is the difference between excitatory and inhibitory neurotransmitters?
- Excitatory neurotransmitters increase the likelihood of a neuron firing, while inhibitory neurotransmitters decrease the likelihood of a neuron firing.

6. How do neurons communicate with each other?
- Neurons communicate with each other through the release and reception of neurotransmitters at synapses.

7. How can disruptions in neurotransmitter levels lead to mental health disorders?
- Imbalances in neurotransmitter levels can disrupt communication between neurons, leading to mental health disorders such as depression or anxiety.