Ch. 7.6 Key Terms
what is autonomic nervous system?
contains the sympathetic and parasympathetic nervous systems, which work together to control involuntary body functions
what is Cerebrum ?
the largest and highest section of the brain
what is Midbrain?
the section location below the cerebrum at the top of the brainstem
what is peripheral nervous system?
consists of the nerves and has two divisions: the somatic nervous system and the autonomic nervous system
what is Thalamus?
acts as a relay center and directs sensory impulses to the cerebrum
what is Brain?
a mass of nerve tissue well protected by membranes and the cranium
what is Diencephalon?
the section located between the cerebrum and midbrain
what is Nerves?
a combination of many nerve fibers located outside the brain and spinal card
what is Pons?
the section located below the midbrain and in the brainstem
Ventricles
hollow spaces that connect with each other and with the space under the arachnoid membrane
what is central nervous system?
consists of the brain and spinal cord
what is Hypothalamus ?
regulates and controls the autonomic nervous system, temperature, appetite, water balance, sleep and blood vessel constriction and dilation
what is nervous system?
a complex, highly organized system that coordinates all the activities of the body
what is somatic nervous system?
carries messages between the CNS and the body
what is Cerebellum?
the section below the back of the cerebrum
what is medulla oblongata?
the lowest part of the brainstem
wat is Neuron?
the basic structural unit of the nervous system
what is spinal cord?
continues down from the medulla oblongata and ends at the first or second lumbar vertebrae
what is cerebrospinal fluid?
the ventricles are filled with a clear, colorless fluid
what is Meninges?
three membranes that cover and protect the brain and spinal
what is parasympathetic?
counteracts the actions of the sympathetic system by slowing heart rate, and increasing activity in the digestive tract
what is Sympathetic?
prepares the body to act by increasing heart rate, respiration, and blood pressure, and by showing activity in the digestive tract