Week 2 Summary - Brain and Behaviour (Biological aspects of psychology pt.1)

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Which part of the neuron carries signals away from the neuron to points where communication occurs with other neurons?

Axons (correct)

Cell body

Synapses

Dendrites

What are the fibres that receive signals from the axons of other neurons and carry those signals to the cell body called?

Synapses

Dendrites (correct)

Cell body

Axons

What are the tiny spaces between neurons called?

Cell body

Dendrites

Synapses (correct)

Axons

What is the semipermeable barrier of the neuron's membrane responsible for?

Keeping positively charged molecules from freely entering the axon Signup and view all the answers

What happens when the axon membrane becomes depolarized?

A gate (channel) opens Signup and view all the answers

What are the sudden wave of electrochemical changes called when they shoot down an axon?

Action potentials Signup and view all the answers

Do action potentials occur in dendrites?

Yes Signup and view all the answers

How many axons do neurons generally have?

One Signup and view all the answers

How many dendrites can a neuron have?

Many Signup and view all the answers

Is the firing of a neuron an all-or-none type of signal?

Yes Signup and view all the answers

Which part of the body is responsible for initiating reflexes without instruction from the brain?

The spinal cord Signup and view all the answers

What is the function of sensory neurons in the spinal cord?

They carry information toward the brain Signup and view all the answers

Which neurotransmitter is involved in muscle action and memory?

Acetylcholine Signup and view all the answers

Which neurotransmitter is involved in decreased anxiety and decreased tension?

GABA Signup and view all the answers

Which neurotransmitter is involved in increased pleasure and suppressed appetite?

Dopamine Signup and view all the answers

Which neurotransmitter is involved in increased learning and enhanced memory?

Glutamate Signup and view all the answers

Which neurotransmitter is involved in increased arousal and enhanced cognition?

Acetylcholine Signup and view all the answers

Which neurotransmitter is involved in modulated mood and suppressed appetite?

Serotonin Signup and view all the answers

Which part of the body is responsible for conveying information about an action's results back to the source of the action?

The spinal cord Signup and view all the answers

Which type of neurons carry information away from the brain?

The motor neurons Signup and view all the answers

Which division of the nervous system carries messages back and forth between the CNS and the body's organs and glands?

Autonomic Nervous System Signup and view all the answers

What change in the membrane potential of a postsynaptic cell will cause an excitatory postsynaptic potential (EPSP)?

Depolarization Signup and view all the answers

Which part of the neuron delivers signals across the synapse to dendrites of another neuron?

Axon Signup and view all the answers

What is the function of neurotransmitters?

Carry signals across the synapse to the postsynaptic cell Signup and view all the answers

What is the role of myelin in the speed of action potentials?

It speeds up action potentials Signup and view all the answers

What is the refractory period of a neuron?

The period of time when a neuron resets itself Signup and view all the answers

What is the function of the somatic nervous system?

Send movement instructions back to the muscles that move the skeleton Signup and view all the answers

What is the function of the sympathetic nervous system?

Mobilizes the body for action through the fight-or-flight response Signup and view all the answers

What is the function of the parasympathetic nervous system?

Slows organ and gland activity to conserve the body’s energy Signup and view all the answers

What is the function of dendrites in a neuron?

Receive signals from other neurons and transmit them to the cell body Signup and view all the answers

Week 2 Summary - Brain and Behaviour (Biological aspects of psychology pt.1)

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Questions and Answers

Which part of the neuron carries signals away from the neuron to points where communication occurs with other neurons?

What are the fibres that receive signals from the axons of other neurons and carry those signals to the cell body called?

What are the tiny spaces between neurons called?

What is the semipermeable barrier of the neuron's membrane responsible for?

What happens when the axon membrane becomes depolarized?

What are the sudden wave of electrochemical changes called when they shoot down an axon?

Do action potentials occur in dendrites?

How many axons do neurons generally have?

How many dendrites can a neuron have?

Is the firing of a neuron an all-or-none type of signal?

Which part of the body is responsible for initiating reflexes without instruction from the brain?

What is the function of sensory neurons in the spinal cord?

Which neurotransmitter is involved in muscle action and memory?

Which neurotransmitter is involved in decreased anxiety and decreased tension?

Which neurotransmitter is involved in increased pleasure and suppressed appetite?

Which neurotransmitter is involved in increased learning and enhanced memory?

Which neurotransmitter is involved in increased arousal and enhanced cognition?

Which neurotransmitter is involved in modulated mood and suppressed appetite?

Which part of the body is responsible for conveying information about an action's results back to the source of the action?

Which type of neurons carry information away from the brain?

Which division of the nervous system carries messages back and forth between the CNS and the body's organs and glands?

What change in the membrane potential of a postsynaptic cell will cause an excitatory postsynaptic potential (EPSP)?

Which part of the neuron delivers signals across the synapse to dendrites of another neuron?

What is the function of neurotransmitters?

What is the role of myelin in the speed of action potentials?

What is the refractory period of a neuron?

What is the function of the somatic nervous system?

What is the function of the sympathetic nervous system?

What is the function of the parasympathetic nervous system?

What is the function of dendrites in a neuron?

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