Ch. 7.6 Nervous System Key Terms
contains the sympathetic and parasympathetic nervous system
autonomic nervous system
the largest and highest section of the brain
Cerebrum
the section located below the cerebrum at the top of the brain stem
Midbrain
consists of the nerves and has two divisions
peripheral nervous system
acts as a relay center and directs sensory impulses to the cerebrum
Thalamus
a mass of nerve tissue well protected by membranes and the cranium, or skull
Brain
the section located between the cerebrum and midbrain
Diencephalon
a combination of many nerve fibers located outside the brain and spinal cord
Nerves
the section located below the midbrain and in the brainstem
Pons
hollow spaces that connect with each other and with the space under the arachnoid membrane ( the subarachnoid space)
Ventricles
consists of the brain and spinal cord
central nervous system
regulates and controls the autonomic nervous system, temperature, appetite, water balance, sleep, and blood vessel constriction, and dilation
Hypothalamus
a complex, highly organized system that coordinates all the activities of the body
nervous system
contains the sympathetic and parasympathetic nervous systems
somatic nervous system
the section below the back of the cerebrum
Cerebellum
the lowest part of the brain stem
medulla oblongata
nerve cell
Neuron
continues down from the medulla oblongata and ends at the first or second lumbar vertebrae
spinal cord
circulates continually between the ventricles and through the subarachnoid space
cerebrospinal fluid
three membranes that cover and protect the brain and spinal cord
Meninges
counteracts the actions of sympathetic system by slowing heart rate, decreasing respiration, lowering blood pressure, and increasing activity in the digestive tract
parasympathetic
prepares the body to act by increasing heart rate, respiration, and blood pressure, and by slowing activity in the digestive tract
Sympathetic