AQA B10 Nervous System

What is homeostasis?

• the regulation of the internal conditions of a cell or organism

• the regulation of the external environment of a cell or organism

• the variation of the internal conditions of a cell or organism

• the variation of the external environment of a cell or organism

What is the correct term for the specialised cells that detect changes in the external environment?

• Effectors

• Co-ordination centres

• Receptors

• Detectors

What is the correct term for the muscles and glands that bring about responses in the body?

• Effectors

• Co-ordination centres

• Receptors

• Detectors

What does the central nervous system consist of?

• The brain

• The sense organs

• Muscles and glands

• The brain and spinal cord

What do we call the cells of the nervous system that are specialised to carry electric impulses around the body?

• Neurons

• Synapses

• Neurones

• Reflexes

Which option shows the correct sequence of events in a reflex arc?

• stimulus---receptor---relay neurone in the CNS---sensory neurone---motor neurone---effector

• stimulus---receptor---motor neurone---relay neurone in the CNS---sensory neurone---effector

• stimulus---effector---sensory neurone---relay neurone in the CNS---motor neurone---receptor

• stimulus---receptor---sensory neurone---relay neurone in the CNS---motor neurone---effector

What is the correct term for the junction between 2 neurones?

• Neurotransmitter

• Synapse

• Dendrite

• Cell body

How is a nerve impulse transmitted across a synapse?

• Small pixies carry the impulse across the gap

• Osmosis

• An electrical impulse

• Chemicals called neurotransmitters

• Cerebral cortex

• Cerebellum

• Medulla

• Hypothalamus

What is this?

• Cerebral cortex

• Medulla

• Cerebellum

• Hypothalamus