Chapter 22,part A Microbial Diseases of the Nervous System
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings B.E Pruitt & Jane J. Stein Chapter 22, part A Microbial Diseases of the Nervous System
Microbes enter the nervous system via: Skull or backbone fractures ·Medical procedures Along peripheral nerves 。Blood or lymph
Microbes enter the nervous system via: • Skull or backbone fractures • Medical procedures • Along peripheral nerves • Blood or lymph
The Nervous System Brain Central nervous system(CNS) Spinal cord Peripheral nervous system(PNS) Figure 22.1
The Nervous System Figure 22.1
Microbial Diseases of the Nervous System Bacteria can grow in the cerebrospinal fluid in the subarachnoid space of the CNS The blood brain barrier (capillaries)prevents passage of some materials (such as antimicrobial drugs)into the CNS 。Meningitis Inflammation of meninges 。Encephalitis Inflammation of the brain
Microbial Diseases of the Nervous System • Bacteria can grow in the cerebrospinal fluid in the subarachnoid space of the CNS • The blood brain barrier (capillaries) prevents passage of some materials (such as antimicrobial drugs) into the CNS • Meningitis • Inflammation of meninges • Encephalitis • Inflammation of the brain
The Meninges and Cerebrospinal Fluid Cerebrum Skull bone Subarachnoid space Dura mater (contains Arachnoid Skull bone cerebrospinal mater fluid) >Cranial meninges -Pia mater Blood vessel Cerebrum Cerebellum Spinal cord Dura mater Arachnoid mater Spinal meninges Pia mater Subarachnoid space Subarachnoid space of spinal cord Figure 22.2
The Meninges and Cerebrospinal Fluid Figure 22.2