Ch. 7.6 Nervous System Key Terms
What is autonomic nervous system?
The 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 located below the cerebrum at the top of the brainstem.
What is peripheral nervous system?
The peripheral nervous system (PNS) consists of the nerves and has two divisions
What is thalamus?
The thalamus acts as a relay center and directs sensory impulses to the cerebrum.
What is brain?
The brain interprets this information and then immediately directs the correct response. For instance, if you touch a hot stove, sensory nerves immediately
What is diencephalon?
the section located between the cerebrum and midbrain.
What is nerves?
Nerves are a combination of many nerve fibers located outside the brain and spinal cord.
What is pons?
the section located below the midbrain and in the brainstem.
What is ventricles?
ventricles, hollow spaces that connect with each other and with the space under the arachnoid membrane (the subarachnoid space).
What is central nervous system?
The central nervous system (CNS) consists of the brain and spinal cord
What is hypothalamus?
The hypothalamus regulates and controls the autonomic nervous system, temperature, appetite, water balance, sleep, and blood vessel constriction and dilation.
What is nervous system?
The nervous system is a complex, highly organized system that coordinates all the activities of the body.
What is somatic nervous system?
The somatic nervous system carries messages between the CNS and the body.
What is cerebellum?
the section below the back of the cerebrum. It is responsible for muscle coordination, balance, posture, and muscle tone.
What is medulla oblongata?
the lowest part of the brainstem.
What is neuron?
The basic structural unit of the nervous system is the neuron
What is spinal cord?
The spinal cord is responsible for many reflex actions and for carrying sensory (afferent) messages up to the brain and motor (efferent) messages from the brain to the nerves that go to the muscles and glands
What is cerebrospinal fluid?
The ventricles are filled with a clear, colorless fluid called cerebrospinal fluid
What is meninges?
The meninges are three membranes that cover and protect the brain and spinal cord
What is parasympathetic?
the parasympathetic nervous system counteracts the actions of the sympathetic system by slowing heart rate, decreasing respiration, lowering blood pressure, and increasing activity in the digestive tracts
What is sympathetic?
the sympathetic nervous system prepares the body to act by increasing heart rate, respiration,ase! and blood pressure, and by slowing activity in the digestive tract.