Ch. 7.6 Nervous System
Autonomic Nervous System
Contains the sympathetic and parasympathetic nervous systems, which work together to control involuntary body functions
Cerebrum
The largest and highest section of the brain
Midbrain
The section located below the cerebrum at the top of the brainstem. Conducts impulses between brain part and for certain eye and auditory reflexes
Peripheral Nervous Sytem
Consists of the nerves and has two divisions: the somatic nervous system and the autonomic nervous system.
Thalamus
Acts as a relay center and directs sensory impulses to the cerebrum. Allows conscious recognition of pain and temperature
Brain
Diencephalon
The section located between the cerebrum and midbrain. Contains two structures: thalamus and hypothalamus
Nerves
A combination of many nerve fibers located outside the brain and spinal cord.
Pons
The section located below the midbrain and in the brainstem. Conducts messages to other parts of the brain
Ventricles
Hallow spaces that connect with each other and with the space under the arachnoid membrane.
Central Nervous System
Consists of the brain and spinal cord
Hypothalamus
Regulates and controls the autonomic nervous system, temperature, appetite, water blanch, sleep, and blood vessel constriction
Nervous System
Somatic Nervous System
Carries messages between the CNS and the body
Cerebellum
The section below the back of the cerebrum. Responsible for muscle coordination, balance, posture, and muscle tone
Medulla Oblongata
Th lowest part of the brainstem. Regulates heartbeat, respiration, swallowing, coughing, and blood pressure
Neuron
The basic structural unit of the nervous system
Spinal Cord
Continues down form the medulla oblongata and ends at the first or second lumbar vertebrae
Cerebrospinal Fluid
Ventricles are filled with a clear, colorless fluid called Cerebrospinal Fluid
Meninges
Three membranes that cover and protect the brain and spinal cord
Parasympathetic
Sympathetic
One of the divisions to the autonomic nervous system. Works with parasympathetic to maintains a blacked state in the body to control involuntary body function at proper rates.