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The Nervous System and Endocrine System (Nervous System: uses electrical…
The Nervous System and Endocrine System
Nervous System: uses electrical and chemical means to send messages from cells to other cells.
CARRIES OUT TASKS: Sense organs receive information on changes that occur to the body and to external environment.
the central nervous system then processes the information and determines a response.
central nervous system issues the commands to bring about change.
(2 SUBDIVISIONS)
Central Nervous System
BRAIN AND SPINAL CORD
Enclosed by the cranium and vertebral column.
(2 SUBDIVISIONS)
Peripheral Nervous System
NERVES AND GANGLIA
Ganglion: a knot-like swelling in a nerve wehre the neuron cell bodies are concentrated.
Nerve: a bundle of axons that are wrapped in a fibrous connective tissue.
Sensory division: caries signals from receptors to CNS
Visceral sensory division
carries signals from visceral
Somatic sensory division
carries signals from receptors in the skin, muscles, bones, and joints.
Motor division: Carries signals from the CNS to effectors
Visceral motor division
Autonomic nervous system
Somatic motor division
Carries signals to skeletal muscles