Ch. 7.6 Nervous System Key Terms
What is the Autonomic Nervous System?
Consists the sympathetic and parasympathetic nervous systems, which work together to control involuntary body functions.
What is the Brain?
A mass of nerve tissue well protected by membranes and the cranium.
What is the Central Nervous System?
Consists of the brain and spinal cord
What is Cerebellum?
The section below the back of the cerebrum.
What is Cerebrospinal Fluid?
It serves as a shock absorber to protect the brain and spinal cord.
What is Cerebrum?
The largest and highest section of the brain.
What is a Diencephalon?
The section located between the cerebrum and midbrain.
What is Hypothalamus?
Regulates and controls the autonomic nervous system, temperature, appetite, water balance, sleep, and blood vessel constriction and dilation.
What is Medulla Oblongata?
The lowest part of the brainstem.
What are Meninges?
Three membranes that cover and protect the brain and spinal cord.
What is a Midbrain?
The section located below the cerebrum at the top of the brainstem.
What are nerves?
A combination of many nerve fibers located outside the brain and spinal cord.
What is the Nervous System?
A complex, highly organized system that coordinates all the activities of the body.
What are Neurons?
Consists of a cell body containing a nucleus.
What are Parasympathetic?
Slows heart rate, decreasing respiration, lowering blood pressure, and increasing activity in the digestive tracts.
What are Pons?
The section located below the midbrain and in the brainstem.
What are the Peripheral Nervous System?
Consists of the nerves and has two divisions.
What is a Somatic Nervous System?
Carries messages between the CNS and the body.
What is a Spinal Cord?
Responsible for many reflex actions and for carrying sensory messages up to the brain and motor messages from the brain to the nerves that go to the muscles and glands.
What is Sympathetic?
Prepares the body to act by increasing heart rate, respiration, and blood pressure, and by slowly activity in the digestive tract.
What is Thalamus?
Acts as a relay center and directs sensory impulses to the cerebrum.
What are Ventricles?
Hollow spaces that connect with each other and with the space under the arachnoid membrane.