Brain Cells Flashcards
The function of glial cells is to ______ and ______ neurons
support; nourish
What are the 3 reasons brain cells are difficult to study?
- Size
- Fragility
- Uniform color
What is histology?
The study of structure of tissue
Golgi’s reticular theory states that neurons form a ______
dense, continuous net
Ramon y Cajal’s Neuron Doctrine states that neurons are ______
in contact, but not continuity
The cytoskeleton of the cell consists of ______, ______, and ______
microtubules; microfilaments; neurofilaments
A ______ consists of 3 nucleotide bases, and codes for an amino acid.
codon
What are the three parts of the axon?
- Axon hillock
- Axon proper
- Axon terminal
______ axoplasmic transport carries proteins from the soma to the axon terminal, while ______ transport carries proteins from the axon terminal to the soma.
anterograde; retrograde
Fast anterograde axoplasmic transport uses ______ protein legs, while the retrograde variation uses _______.
kinesin, dynein
Malformed/reduced dendritic spines are associated with which mental/intellectual illness?
Parkinson’s disease
The two types of dendrites, based on shape, are _______ cells and _______ cells.
stellate; pyramidal
Golgi type I axons are _______ ; Golgi type II axons are ____
long; short
What is the most numerous type of cell in the brain?
Astrocytes
What are the 5 functions of astrocytes?
- fill space between neurons
- Influence neurite growth
- Provide physical support to neurons
- Regulate chemical context of cerebrospinal fluid
- Help form the blood-brain barrier
