Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
central nervous system (CNS) |
brain and spinal cord -integrates and coordinates all voluntary and involuntary nervous functions |
|
|
ganglia |
cell bodies grouped in small clusters |
|
|
peripheral nervous system |
nerves and ganglia -keeps CNS in continuous contacts with almost every part of the body |
|
|
somatic nervous system |
nerves that carry info to and from CNS -sensations and voluntary movement |
|
|
autonomic nervous system |
involuntary subconscious activities that keep body functioning properly -regulates heart rate, breathing etc |
|
|
sympathetic nervous system |
charge when in stressful or urgent conditions |
|
|
parasympathetic nervous system |
adjusts bodily functions to every day non stressful events -stores energy |
|
|
meninges |
connective tissue covering the brain and spinal cord -dura mater: tough, leathery - arachnoid: coweb- like - pia mater: molded around the brain |
|
|
cerebrospinal fluid |
fills space between layers of the meninges as well as the internal cavities of the brain ( ventricles), and cavity within spinal cord (central canal) |
|
|
Functions of cerebrospinal fluid |
- Shock absorption -support - nourishment and waste removal |
|
|
blood-brain barrier |
mechanism that selects the substances permitted to enter the cerebrospinal fluid from the blood -formed by tight junctions between cells and capillary walls |
|
|
cerebrum |
larges and most prominent part of brain -most human characteristics -sensory areas and -voluntary control -interpretations |
|
|
cerebral cortex |
thin outer layer of each hemisphere -neurological cells -unmyelinated axons -nerve cell bodies |
|
|
gray matter |
|
|
|
white matter |
-myelinated axons |
|
|
primary somatosensory area |
|
|
|
primary motor area |
-controls voluntary movement -forms a band in the frontal love that strectches over the cortex -organized in manner similar to somatosensory area |
|
|
prefrontal cortex |
|
|
|
hypothalamous |
small region of brain that is largely responsible for maintaining homeostasis |
|
|
cerebellum |
- |
