Nervous System 2

brain stem

portion of brain that connects the cerebrum with the spinal cord;
contains 1)midbrain 2)pons 3)medulla oblongata

cerebellum

small section of brain located under under the cerebral hemispheres; functions in coordination, balance, muscle tone SOMATIC NERVOUS SYSTEM

somatic nervous system

division of the nervous system that controls VOLUNTARY activities and stimulates skeletal muscle

cerebral cortex

the very thin outer layer of gray matter on the surface of the cerebral hemispheres

cerebrospinal fluid CSF

fluid that circulates in and around the brain and spinal cord

cerebrum

largest part of the brain; composed of two cerebral hemispheres

diencephalon

area of brain between cerebral hemispheres and the midbrain; contains hypothalamus, thalamus, pituitary gland

meninges

three layers of fibrous membranes that cover the brain and spinal cord

hypothalamus

region of the brain that controls the pituitary and maintains homeostasis

medulla oblongata

part of the brain stem that connects the brain to the spinal cord

midbrain

upper portion of the brain stem

thalamus

located in the diencephalon; chief relay center for sensory impulses traveling to the cerebral cortex

ventricle

four chambers in the brain wher cerebrospinal fluid is produced

sulcus (plural sulci)
gyrus (plural gyri)

shallow groove of the cerebral cortex
raised area of the cerebral cortex

electroencephalogram EEG
computed tomography CT
positron emission tomography PET

studies electrical activity in the brain
radiographic images of the brain
imaging method that shows activity in an organ (real time)

pons

central part of the brain stem
mylienated nerve fibers (white matter) connect cerebellum with brain stem, and cerebrum and spinal cord; name means bridge