Unit 2 Topic 2- Control And Communication

Question 1

What is the cerebrum responsible for?

Answer 1

• memory
• personality
• reasoning

Question 2

What is the cerebellum responsible for?

Answer 2

• coordination
• balance

Question 3

What is the medulla responsible for?

Answer 3

• heart rate
• breathing rate

Question 4

What does the nervous system consist of?

Answer 4

• the brain
• spinal cord
• nerves

Question 5

What makes up the Central Nervous System?

Answer 5

The brain and spinal chord

Question 6

Name the 3 types of neurons

Answer 6

• sensory
• inter
• moror

Question 7

What does the sensory neuron do?

Answer 7

Transmits electrical impulses from sense organs to interneurons

Question 8

Where are interneurons located?

Answer 8

Inside the CNS

Question 9

What does the interneuron do?

Answer 9

Transmits electrical impulses from the sensory neuron to the motor neuron

Question 10

What does the motor neuron do?

Answer 10

Transmits electrical impulses from the interneurons to the muscles and glands

Question 11

Describe the flow of information in the nervous system

Answer 11

• stimulus is detected by receptors in a sense organ which triggers an electrical impulse
• the electrical impulse is carried along the sensory neurons to the CNS
• in the CNS the electrical impulse travels along the interneurons
• the CNS processes the information and another impulse is sent along a motor neuron
• the motor neuron takes the impulse to a muscle or gland to produce a reaction/effect

Question 12

What is a synaptic cleft?

Answer 12

The microscopic gap where neurons meet

Question 13

How do neurons transfer messages?

Answer 13

Neurotransmitters diffuse across tte synapse and bind with receptor molecules on the membrane of the next neuron

Question 14

If glucose levels increase insulin turns glucose into what substance?

Answer 14

Glucogen

Question 15

If glucose levels decrease glycogen is turned back into glucose by what hormone?

Answer 15

Glucagon