Monitors environments, integrates sensory information, and coordinates voluntary and involuntary responses
Central Nervous System
Consists of brain and spinal cord. Integrates and coordinates the processing of sensory data and the transmission of motor commands.
Peripheral Nervous System
System of which all communication between the CNS and the rest of the body occurs through.
division of nervous system which transmits sensory information from somatic and visceral receptors and special sense organs to the CNS
Somatic Nervous System
the division of the peripheral nervous system that controls the body's skeletal muscles. Also called the skeletal nervous system
Autonomic Nervous System
the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands
Regulate the environment around neurons, provide a supporting framework for neural tissue, and act as phagocytes.
relay signals to other cells by releasing chemical messengers called neurotransmitters.
Two or more dendrites and a single axon. The most common of all neurons in the CNS.
neurons that carry incoming information from the sense receptors to the central nervous system.
Somatic Sensory Receptors
Detect information about the outside world or our physical position within it.
Visceral sensory receptors
monitor other internal tissues such as smooth muscle, cardiac muscle and glands
central nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs.
largest, most numerous glial cells; maintain blood-brain barrier to isolate CNS from general circulation; provide structural support for CNS; regulate ion and nutrient concentrations; perform repairs to stabilize tissue and prevent further injury
a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
smallest neuroglial cells; phagocytic cells that engulf cellular debris, waste products and pathogens. increase in number as a result of infection or injury
in cns only, epithellal cells in a single layer, that line the spaces in the brain and spinal cord, and proudce cerebrospinal fliud (csf)
Supporting cells of the peripheral nervous system responsible for the formation of myelin.
The white matter of the CNS contains bundles of axons that share common origins, destinations, and functions.
distribute sensory information from sensory receptors to processing centers in the brain