BCS 110 Chapter Notes -Dura Mater, Somatic Nervous System, Peripheral Nervous System
10 Sep 2013
School
Department
Course
Professor
Document Summary
Autonomoic nervous system: regulates body"s internal environment; has two of efferent nerves: sympathetic nervous (autonomic motor nerves that project from the. Cns in the small of the back (lumbar) and chest area (thoracic) regions of the spinal cord) and parasympathetic nerves (autonomic motor nerves that project form the brain and lower back (sacral) region of the spinal cord). The brain and spinal cord (cns) are encased in bone and covered by three protective layers, meninges: the dura mater, arachnoid membrane, and the pia mater. Between the arachnoid membrane and the pia mater, there is the subarachnoid space, which is filled with cerebrospinal fluid (csf). The csf fills the subarachnoid space, the central canal of the spinal cord, and the cerebral ventricles of the brain. The blood-brain barrier is a result of the structure of cerebral blood vessels.
