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Physiological
Chapter 3 KU Dr. Heinly 1:30 TH
39
Psychology
Undergraduate 4
10/14/2009

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Term
myelin
Definition
Insulates the axon of neurons.
Term
oligodendroglia
Definition
Myelinates axons in the brain and spinal column
Term
Schwann cells
Definition
Myelinates axons in the peripheral nervous system
Term
Astroglia
Definition
Glial cell that makes up the blood brain barrier. Also provides structural support and enhances brain activity. Uses most nutrients.
Term
Microglia
Definition
Originates in blood via immune system. Provides growth factors and gets rid of matter and debris.
Term
Glial cells
Definition
Support cells for neurons. form early in life and are constantly replacing themselves.
Term
Ependymal cells, Astroglia, Microglia, Oliogodendroglia, and Schwann
Definition
What are the 5 major classes of glial cells
Term
Ependymal
Definition
Glial cell that makes cerebral spinal fluid.
Term
Stellate
Definition
An interneuron with a hard to see axon, located in the thalamus
Term
Motor neurons
Definition
Have extensive dendrites, synapse to one muscle. Large cell bodies with long axons.
Term
Excitation - Inhibition
Definition
What is the language of neurons?
Term
Purkinje cell
Definition
A pyramedial cell with dense dendrites. Brings information from the cerebellum to the rest of the brain and spinal cord.
Term
pyramidial cell
Definition
A long axon and pyramid shaped cell body with 2 sets of dendrites. Carries information from the cortex to the rest of the brain and spinal cord.
Term
Sensory (info into brain), interneurons (process within brain), motor neurons (out of brain to muscles)
Definition
Name the 3 types of neurons
Term
somatosensory neuron
Definition
What sensory neuron brings information into the spinal cord from the body.
Term
Purkinji, pyramedial, stellate
Definition
Name the 3 types of inter neurons.
Term
Loewi
Definition
Discovered the first neurotransmitters ACh acetylcholine.....slows the heart
Term
Neuron
Definition
Functional units - enable us to receive information process it and act.
Term
Glial cells
Definition
Helps neurons. Multiple functions; provides structural support, neutrients and protection for neurons.
Term
Cajal
Definition
nervous system is made up of discrete cells.
Neuron hypothesis.
Term
Golgi
Definition
Said that the nervous system is composed of a network of interconnected fibers "nerve net".
Term
phospholipid molecules
Definition
Cell membranes are lined with these molecules.
Term
Genes
Definition
Contained within Chromosomes are thousands of....
Term
transcription
Definition
Takes place in the nucleus.
Term
translation
Definition
Takes place in the endoplasmic reticulum
Term
ribosomes
Definition
Located on the walls of the rough ER, act as catalysts in the building of proteins.
Term
Golgi bodies
Definition
Shapes proteins, wraps packages labels and ships proteins to the right places.
Term
Genomics
Definition
The field of study directed toward understanding how genes produce proteins.
Term
46 (23 pairs)
Definition
Humans have how many chromosomes
Term
allele
Definition
Copy of a gene
Term
small
Definition
Males are more susceptible to deformity due to the y chromosome being......
Term
wild type
Definition
The sequence that is most common in a population is called the...
Term
genotype
Definition
the full set of all the genes that an organism possesses.
Term
phenotype
Definition
the appearance of an organism that results from the interaction of genes with one another and with the environment.
Term
complete dominance
Definition
All the allele's trait are expressed in full
Term
incomplete dominance
Definition
Allele is expressed only partially (black + white = gray)
Term
codominance
Definition
When both allele's own traits are expressed completely.
Term
Mutant genes
Definition
Causes Tay-Sachs disease, Huntington's chorea
Term
Chromosome abnormality
Definition
Down's syndrome is caused by a..........
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