Ch. 7.6 Nervous System
Contains the sympathetic and parasympathetic nervous system, which work together to control involuntary body functions.
What is Brain
A mass of nerve tissue well protected by membranes and the cranium (skull).
What is Central nervous system
Consists of the brain and spinal cord.
What is Cerebellum
The largest and highest section of the brain.
What is Cerebrospinal fluid
Fill up the ventricles. This fluid circulates continually between the ventricles and through the subarachnoid space.
What is Cerebrum
The section below the back of the cerebrum, responsible for muscle coordination, balance, posture, and muscle tone.
What is 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
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 Meninges
Three membranes that cover and protect the brain and spinal cord.
What is Midbrain
The section located below the cerebrum at the top of the brainstem.
What is Nerves
A combination of many nerve fibers located outside the brain and spinal cord.
What is Nervous system
What is Neuron
Basic structural unit of the nervous system that coordinates all the activities of the body.
What is Parasympathetic
Activates after the emergency. This 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 Peripheral nervous system
Consists of the nerves and has two divisions - the somatic nervous system and the automatic nervous system.
What is Pons
The section located below the midbrain and in the brainstem, responsible for conducting messages to other parts of the brain.
What is Somatic nervous system
Carries messages between the CNS and the body.
What is Spinal cord
Continues down from the medulla oblongata and ends at the first or second lumbar vertebrae. Responsible for connecting the neural network of our body.
What is Sympathetic
Prepares the body to act at emergency situations by increasing heart rate, respiration, and blood pressure, and by slowing activity in the digestive tract. (fight or flight)
What is Thalamus
Located in the Diencephalon, acts as a relay center and directs sensory impulses to the cerebrum. It also allows conscious recognition of pain and temperature.
What is Ventricles
Hollow spaces that connect with each other and with the space under the arachnoid membrane.