Nervous System (1) Flashcards
Functions of the Nervous System
Maintain Homeostasis
Receive sensory input
Integrate information
Control muscles and glands
Establish and maintain mental activity
These are the cells of the nervous system
Neurons
The endings of neurons that detect stimuli
Sensory receptors
The bundle of axons that connects the CNS to sensory receptors, muscles and glands
Nerve
These are 12 pairs originating from the brain
Cranial nerves
The collection of neuron bodies located outside the CNS
Ganglion
These are 31 pairs originating from the spinal cord
Spinal nerves
The extensive network of axons and, in some cases, neuron cell bodies, located outside the CNS
Plexus
Two Major Divisions of the Nervous System
Central Nervous System
Peripheral Nervous System
What is the CNS composed of?
Brain and Spinal cord
What are the two subdivisions of PNS?
Sensory Division (AKA Afferent division)
Motor Division
These neurons transmit action potentials from the periphery to the CNS
Sensory Neurons
What type of neurons transmit AP from the CNS to the periphery?
Motor Neuron
What are the two subdivisions of the motor division?
Somatic Nervous System
Autonomic Nervous System
In SNS, where does the AP from the CNS lead to
Skeletal System