Chpt 9 Nervous Tissue
Terms
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- Components of Nervous System
- Brain and Spinal Cord
- Two Main Subsystem
- Central Nervous System (CNS) Peripheral Nervous System (PNS)
- CNS contains
- Brain and Spinal Cord
- PNS contains
- All nervous tissue outside the brain and spinal cord
- 3 basic functions of Nervous System
- Sensory, Intergrative, and Motor
- Sensory functions does what?
- Decect stimuli
- Intergrative does what?
- Analyze and store sensory info
- Motor does what
- Responds to intergrative decision
- Sensory (afferent) Neurons provides
- (input) information from the environment to the body
- Motor (efferent) Nerons carry
- output from the CNS to the PNS
- PNS is subdivided into
- Somatic and Automatic Nerve System
- SNS deals with ______ movements and contains ___ muscles.
- Voluntary skeletal
- ANS deals with _______, an convey impulses CNS to ______ _______ ______, _______ _______ ________, and _________
- Smooth muscle tissue, Cardiac muscle tissue, and glands.
- The Nevous system consit of two types of cells which is ______ and ___________
- Neuron and Neurogila
- Neurons usally have 3 parts
- Cell body, dendrites,and a single axon
- Dendrites
- recieving or input portion of a neuron.
- Axon
- An axon or nerve fiber, is a long, slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body or soma.
- Cell body contains a
- nucleus surrounded by the cytoplasma that includes typical organelles
- Neuroglia
- supports and protect neurons
- 5 main types of Neurons are
- Astrocytes, Oligodendrocytes, mircrogila, and ependynal cells found in CNS