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11 Cards in this Set

  • Front
  • Back
Nissl substances
the Rough ER present in the cell body of neurons
Axon Hillock
the portion of the cells body of the neuron where it begins to narrow to form the axon
the nucleus and most of the cytoplasm of the Schwann cell, and its exposed plasma membrane (located just external to the myelin sheath)
"the staircase effect"
when a muscle contracts after a long period of rest its initial contractions may not be as strong as later contractions brought on by the same strength stimulus
Functions of the Midbrain
conduction pathway between higher and lower brain centers
-visual and auditory reflex centers
-contains nuclei for cranial nerves III and IV
Characteristic of Life
-Maintain boundaries (distict internal and external environments)
-Response to stimuli/irritability
organelle responsible for detoxifying
-find harmful highly reactive chemicals in the cell and consume
-DO NOT bud off Golgi apparatus as lysosomes do
-tiny projections on extracellular surface of plasma membrane
-present in absorptive cells found in small intestine
-contain actin
Difference in functions of simple and stratified epithelium
simple epithelia occur in cells where absorption or filtration are important

stratified epithelia occur in high abrasion areas where protection is important
medullary cavity
cavity in center of bone that in adults contains fat (yellow bone marrow)
Intramembranous Ossification
results in the formation of cranial bones of the skull and the clavicles