Definitions
Autonomic
Involuntary
Skeletal Muscle
works with tendons and bones to move the body; a voluntary muscle AKA striated muscle
Central Nervous System
CNS brain and spinal cord receives input from PNS and formulates a response
Basic Structural Unit
Neurons
Support and bind components of nervous tissue together, carry on phagocytosis, supply nutrients to neurons, provide cell to cellcommunication.
Neuroglia
Nervous System Characteristic
What is another name for gray matter
Unmyelinated fibers
Long And threadlike muscle pertaining to skeletal system
multi-nucleated
Dominates balances in the sympathetic division...Rest and digest
Parasympathetic
Nerve Fibers that can be many or single; length and branching very. Conduct nerve impulse TO the cell body
Dendrites
Characteristic of nervous system:
Thin sheath that covers certain peripheral axons; aids in regeneration of the axon. Repair is slow and uncertain
Neurilemma
The brain is like a CPU of a computer. PN = wires to cpu and the spinal cord is like the cable to an electrica outlet
Computer Analogy
Striated, single nucleus, junctions with other cells called intercalated disk. Regulated contractions.
Cardiac-involuntary
Myocardium produces heartbeats
Peripheral Nervous
PNS cranial and spinal nerves- subdivided into voluntary and involuntary.
Single fiber, 1 per cell. Carry impulses away from nerve cell body.
Axon
Conduct or carry messages to other neurons, muscles, or glands. Coordination, regulation, and integration of all body functions
Neurons aka nerve cells
Muscle that attaches to bone
Striated
Sympathetic
Fight or flight
Neuroglia aka glial cells
Supports cells and tissues and has a protective function
Voluntary
Somatic
Smooth involuntary muscles
Visceral organs and blood vessels, ducts, shorter with a central nucleus, spindle-shaped
Control System that acts largely unconsciously. Regulates body function such as heart, digestion, respiratory, etc. Primary mechanism of the fight-flight response
Autonomic Nervous System
Daily Double
What is Myelin
fatty material that covers and insulates the axons of some neurons also called white matter. Provides insulation