Ch. 7.6 Nervous System Key Terms
The autonomic nervous system contains the sympathetic and parasympathetic nervous systems, which work together to control involuntary body functions.
Waht is the autonomic nervous system?
The brain is a mass of nerve tissue well protected by membranes and the cranium, or skull.
What is the brain?
The central nervous system (CNS) consists of the brain and spinal cord.
What is the central nervous system?
The section below the back of the cerebrum. It is responsible for muscle coordination, balance, posture, and muscle tone.
What is the cerebellum?
...a clear, colorless fluid called cerebrospinal fluid. This fluid circulates continually between the ventricles and through the subarachnoid space. It serves as a shock absorber to protect the brain and spinal cord. It also carries nutrients to some parts of the brain and spinal cord and helps remove metabolic products and wastes.
What is cerebrospinal fluid?
The largest and highest section of the brain. ... The cerebrum is responsible for reasoning, thought, memory, judgment, speech, sensation, sight, smell, hearing, and voluntary body movement.
What is the cerebrum?
The section located between the cerebrum and midbrain. It contains two structures: the thalamus and hypothalamus.
What is the diencephalon?
The hypothalamus regulates and controls the autonomic nervous system, temperature, appetite, water balance, sleep, and blood vessel constriction and dilation. The hypothalamus is also involved in emotions such as anger, fear, pleasure, pain, and affection.
What is the hypothalamus?
The lowest part of the brainstem. It connects with the spinal cord and is responsible for regulating heartbeat, respiration, swallowing, coughing, and blood pressure.
What is the medulla oblongata?
The meninges are three membranes that cover and protect the brain and spinal cord.
What are meninges?
The section located below the cerebrum at the top of the brainstem. It is responsible for conducting impulses between brain parts and for certain eye and auditory reflexes.
What is the midbrain?
are a combination of many nerve fibers located outside the brain and spinal cord.
What are nerves?
is a complex, highly organized system that coordinates all the activities of the body.
What is the nervous system?
The basic structural unit of the nervous system is the neuron, or nerve cell.
What is a neuron?
nervous system counteracts the actions of the sympathetic system by slowing heart rate, decreasing respiration, lowering blood pressure, and increasing activity in the digestive tract.
What is parasympathetic?
consists of the nerves and has two divisions: the somatic nervous system and the autonomic nervous system.
What is the peripheral nervous system (PNS)?
The section is located below the midbrain and in the brainstem. It is responsible for conducting messages to other parts of the brain; for certain reflex actions, including chewing, tasting, and saliva production; and for assisting with respiration.
What are pons?
carries messages between the CNS and the body.
What is the somatic nervous system?
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 the spinal cord?
nervous system prepares the body to act by increasing heart rate, respiration, and blood pressure, and by slowing activity in the digestive tract.
What is sympathetic?
acts as a relay center and directs sensory impulses to the cerebrum. It also allows conscious recognition of pain and temperature.
What is the thalamus?
hollow spaces that connect with each other and with the space under the arachnoid membrane (the subarachnoid space).
What are ventricles.