Terms in this set (33)
Peripheral Nervous System, the sensory and motor neurons that connect the CNS to the rest of the body
Central Nervous System; brain and spinal cord
sympathetic nervous system
a set of nerves that prepares the body for action in challenging or threatening situations(fight or flight)
parasympathetic nervous system
a set of nerves that helps the body return to a normal resting state
control smooth muscle, cardiac muscle, and glands, involved with involuntary activities of the body
Nerves that serve the skin and skeletal muscles and are mainly involved with the conscious and voluntary activities of the body.
a nerve cell that is specialized to receive and conduct electrical impulses
bundle of neurons in the PNS
the extension of a neuron, ending in branching terminal fibers, through which signals are sent away from cell body
the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body
motor neurons (glands and muscles)
the nerve cell that connects sensory and motor neurons
the change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell.
point of contact between a motor neuron and a skeletal muscle cell
A junction where information is transmitted from one neuron to another neuron, muscle, gland, etc
membrane of the neuron that releases neurotransmitters
Post- synaptic membrane
in a synaptic transmission, this is the membrane that is equipped with receptor sites (proteins) to receive neurotransmitters.
Area of the brain responsible for all voluntary activities of the body. largest part of the brain
the "little brain" at the rear of the brainstem; functions include processing sensory input and coordinating movement output and balance
Connection to spinal cord. Filters information flow between peripheral nervous system and the rest of the brain.
brain region controlling the pituitary gland
the brain's sensory control center, located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla
Part of the brainstem that controls vital life-sustaining functions such as heartbeat, breathing, blood pressure, and digestion.
The endocrine system's most influential gland. Under the influence of the hypothalamus, the pituitary regulates growth and controls other endocrine glands.
a person's subjective experience of the world and the mind
A layer of fatty tissue segmentally encasing the fibers of many neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from one node to the next.
neuroglial cells (Glial cells)
Help support the nervous system; they make up half the mass of the brain
Type of glial cell in the PNS that wrap axons in a myelin sheath.
Type of glial cell in the CNS that wrap axons in a myelin sheath.
chemical messengers that cross the synaptic gaps between neurons