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National 5 Biology > Unit 2.2: Control and Communication > Flashcards

Unit 2.2: Control and Communication Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

What is the function of the nervous system?

A

To transmit messages in from electrical impulses around the body

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2
Q

What are the two parts of the nervous system?

A

Central nervous system (CNS)

Nerves (neurons)

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3
Q

what does the CNS consist of?

A

Brain

spinal cord

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4
Q

What are the names of your brain called?

A

Cerebrum
Cerebellum
Medulla

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5
Q

What is the function of the cerebrum?

A

Memory
personality
concious thought

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6
Q

What is the function of the cerebellum?

A

Muscle

Balance

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7
Q

What is the function of the medulla?

A

Heart rate

breathing

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8
Q

What are the 3 types of neuron?

A

Inter
Sensory
Motor

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9
Q

How are messages carried along neurons?

A

Electrical impulse

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10
Q

What is the function of the Sensory neuron?

A

To pick up information from receptors

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11
Q

What is the function of the interneuron?

A

To process the information from the sensory to pass it to the motor neuron

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12
Q

What is the function of the motor neuron?

A

To act on the information given in an effe tor for a response

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13
Q

Describe the synapse.

A

The gap between neurons

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14
Q

Explain how messages travel between neurons.

A

When an electrical impulse reaches the end of a neuron chemicals are released from it.
The chemicals diffuse across the synapse and trigger an electrical impulse in the next neuron in the circuit.

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15
Q

Describe the speed if the effector is a muscle.

A

It will be rapid

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16
Q

Describe the speed if the effector is a gland.

A

It will be slow

17
Q

What is a reflex action?

A

A quick response for a rapid and fast action

18
Q

Give examples of reflex actions.

A

Sneezing

Blinking

19
Q

Describe how reflex actions occur.

A

It goes from the sensory neuron, to a inter neuron and quickly goes to the motor neuron

20
Q

State the function of the reflex arc.

A

To protect the body from harm

National 5 Biology (15 decks)

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