Yr 9 Sc - Health 7-2 Nervous Control 2018
Autonomic nervous system
the system controlling involuntary actions such as the heartbeat.
a nerve fibre that sends nerve impulses away from the cell body.
part of the brain where the spinal cord enters the skull. It controls the body's vital functions, such as breathing, blood pressure and heart rate.
the part of the neuron that contains the nucleus.
Central nervous system (CNS)
the brain and the spinal cord.
part of the brain that controls conscious thoughts, controls the movement of every body part, and receives sensory messages from each body part.
branches from the cell body that receive messages from other neurons.
muscles or glands that put the messages into effect.
the lower half of the brain stem.
nerve cells that carry messages from the CNS to effectors.
the insulating layer that covers a neuron.
the electrical message carried by a nerve cell.
a nerve cell.
a chemical message released at the end of an axon to be received by the next neuron's dendrites.
Peripheral nervous system (PNS)
the nerves that carry messages to and from the central nervous system and other parts of the body.
special cells that detect stimuli.
sensory nerve, interneuron, motor nerve + connections to the brain.
nerve cells that carry messages from cells in the sense organs to the CNS.
any factor that stimulates a receptor and brings about a response.
the space between two neurons.
Controls coordination and balance
Nerve that links cells in the CNS