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Somatic Nervous System
Subdivision of the PNS that controls voluntary activities such as the activation of skeletal muscle
Peripheral Nervous System
Nervous System subdivision that is composed of the cranial and spinal nerves and ganglia
Autonomic Nervous System
Subdivision of the PNS that regulates the activity of the heart and smooth muscle, and of glands; it is also called the involuntary nervous system
Central Nervous System
A major subdivision of the nervous system that interprets incoming information and issues orders
Peripheral Nervous System
A major subdivision of the nervous system that serves as communication lines, liking all parts of the body to the CNS
Demonstrate irritability and conductivity, and thus transmit electrical messages from one area of the body to another area; release neurotransmitters; are amitotic
Support, insulate, and protect cells; able to divide; therefor are responsible for most brain neoplasms
Cutaneous sense organs
Sensory receptors found in the skin, which are specialized to detect temperature, pressure changes, and pain
Neuron, serving as part of the conduction pathway between sensory and motor neurons
period of repolarization of the neuron during which it cannot respond to a second stimulus
process by which ATP is used to move sodium ions out of the cell and potassium ions back into the cell; completely restores the resting conditions of the neuron
Pupillary light reflex; Effectors are smooth muscle and glands; regulation of blood pressure; salivary reflex
contains reflex centers involved in regulating respiratory rhythm in conjunction with lower brain-stem centers
important relay station for afferent fibers traveling to the sensory cortex for interpretation
contains autonomic centers, which regulates blood pressure and respiratory rhythm, as well as coughing and sneezing centers
part of the limbic system; contains centers for many drivers (rage, pleasure, hunger, sex, etc.)
a specialized motor speech area located at the base of the precentral gyrus is called ____ area
may cause medulla oblongata to be wedged into foramen magnum by pressure of blood
results when a brain region is deprived of blood or exposed to prolonged ischemia
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