Brain, Nerves And Reflex

Question 0

Where is the Cerebral Cortex (Cerebrum) and what does it control?

Answer 0

Top, front of brain. Memory, consciousness, language, speech (THINKING actions)

Question 1

Define the nervous system.

Answer 1

The nervous system senses the environment and processes information so we can respond.

Question 2

Where is the medulla and what does it control?

Answer 2

Bottom, thin strip, below cerebellum. Breathing, heartbeat (things you DONT THINK about)

Question 3

Where is the cerebellum and what does it control?

Answer 3

Bottom and back of brain. Movement and co-ordination.

Question 4

How can the brain be mapped?

Answer 4

• MRI (scanning)
• Electric Stimulation
• Accidents

Question 5

What are the main sense organs and the senses?

Answer 5

Skin - Temperature, Pressure, Touch, Pain
Eyes - Light
Ears - Sound, Balance
Nose & Tongue - Chemicals - Smell, Taste

Question 6

Describe the path of a reflex reaction.

Answer 6

Stimulus - Receptor - Sensory Neurone - (Synapse) - Relay Neurone - (Synapse) - Motor Neurone - Effector - Response

Question 7

What is a synapse?

Answer 7

A gap between NEURONES where the IMPULSE is converted to a CHEMICAL (called NEUROTRANSMITTER).