B6: Nervous Coordination

Question 1

Nervous System Response Chain

Answer 1

Receptor - Sensory Neurone - Coordinator (CNS) - Motor Neurone - Effector

Question 2

Reflex Pathway

Answer 2

Bypasses the CNS Stimulus - Receptor - Sensory Neurone - Relay Neurone - Motor Neurone - Effector - Response

Question 3

Neurones

Answer 3

Basic cells of the nervous system that carry minute electrical IMPULSES (not messages) around the body

Question 4

Nerves

Answer 4

Bundles of hundreds/thousands of Neurones

Question 5

CNS

Answer 5

The Central Nervous System is made up of the brain and spinal cord where information is processed.

Question 6

Sensory Neurones

Answer 6

Neurone which carries impulses from the sensory organs to the CNS

Question 7

Motor Neurones

Answer 7

Neurone that carries impulses from the CNS to the effector organs.

Question 8

Relay Neurones

Answer 8

Reflex Actions. Connect the Sensory Neurone to the Motor Nerone. Found in the CNS.

Question 9

Synapse

Answer 9

A gap between neurones where the transmission of information is chemical not electrical.

Question 10

How a synapse works

Answer 10

1. Impulse arrives in neurone 2. Sacs containing chemicals release them into he gap between the neurones. 3. Chemicals attach themselves to the surface of the next neurone and set up a new electrical impulse.

Question 11

Cerebral Cortex

Answer 11

Consciousness, Intelligence, memory, language + thought.

Question 12

Cerebellum

Answer 12

Movement + Balance

Question 13

Medulla

Answer 13

Unconscious Activity

Question 14

Hypothalamus

Answer 14

Regulation of body functions

Question 15

Pituitary Gland

Answer 15

Produces hormones