Nervous Flashcards
- Reception of stimulus
- Transmission of impulses
- Coordination of body activities
Nervous System
Composed of brain and spinal cord
* Acts as body’s control center, coordinates body’s activities
Central Nervous System
Impulses travel through
the neurons in your body
to reach the brain
Central Nervous System
Composed of cranial nerves from the brain and spinal nerves from the spinal cord
Peripheral Nervous System
Similar to telephone wires that connect all of our houses in the community
Peripheral Nervous System
Made up of all the nerves that carry messages to and from the central nervous system.
Peripheral Nervous System
Composed of sympathetic and parasympathetic chains of ganglia
Autonomic Nervous System
Relay information from central nervous system to organs
* Involuntary
Autonomic Nervous System
controls in times of stress, such as the flight or fight response
Sympathetic Nervous System
controls body in times of rest
Parasympathetic Nervous System
Relay information between
skin, skeletal
muscles and central nervous system
Somatic Nervous System
You consciously control this pathway by deciding whether or not to move muscles(except reflexes)
Somatic Nervous System
Reflexes: Automatic response to stimulus
Somatic Nervous System
composed of two hemispheres connected by corpus callosum
TELENCEPHALON OR CEREBRAL HEMISPHERES
controls right side of body
- associated with math, analytic, and speech
Left hemisphere
controls left side of body
- associated with music, art, abstract ideas
Right hemisphere
it is the embryonic structure from which the cerebrum develops prenatally- Controls conscious activities, intelligence, memory, language, muscles
- cavity in each hemisphere are the first and second ventricles
TELENCEPHALON OR CEREBRAL HEMISPHERES
are cavities in CNS that contain fluid
Ventricles
for abstract thinking, sense of humor, and uniqueness of personality;
contraction of skeletal muscles and synchronization of muscular movement
Frontal Lobes
translate nerve impulse into sensations, provides appreciation of size, texture, and weight; sense of taste
Parietal lobes
translate nerve impulse into sensation of sound; control behavior patterns; sense of smell
Temporal Lobes
translates nerves impulses into sight; provides appreciation of size, shapes and color
Occipital Areas
Mainly in left hemisphere
Speech
parietal lobe
- where words are heard and comprehended
Sensory speech (Wernicke’s area)