Lectures 10-12 Flashcards
what’s N.O.G (3 types of nervous system cells)
Neurons
Other cells
Glia cells
How many neurons are in the human body and what do neurons represent
100,000,000,000 in human body (triple 3’s)
Main signaling units in Nervous sytem
What 3 types of cells fall under Other cells?
endothelial cells
ependymal cells
micro glia
How many Glial cells do humans have and how many kinds of glial cells are in this category ?
100,000,000,000,000 (quadruple 4’s) and 7 types of glial cells are in this category
How are neurons utilized in Nervous system? (the star actor)
interconnections enable everything from basic reflexes to cognitive function
What are the double r’s for neurons , what can they not do ?
Replicate
replace
Cannot be replicated or replaced once gone
what are “other cells” utilized for in Nervous system? (Co star)
Variety of important supporting roles
What are Glia cells utilized for in Nervous system? (Co star)
Plays primarily supporting role
How do neurons communicate ?
Neuron sends , processes and receives signals then stores information as well
How do neurons communicate? PSA and 1)… 2)… processes
Combo of electrical and chemical processes as well as Post synaptic signaling, Synaptic transmission and Action potential
Neurons structure typically has ……. cellular characteristics
Eukaryotic
what are the cellular characteristics? NPC
Nucleas
Plasmalemma
Cytoplasm
what’s inside cytoplasm?
(2)
Cytosol
Cyto skeleton
What’s inside membrane organelles? REP
Endoplasmic reticulum
Ribosomes
Polysomes
4 distinct cellular characteristics of a neuron ( 4 parts of an Axon) SADS
Shape: cell body (soma)
Axon
Dendrites
Synapse
what function do axons have?
Hint: theres someone on trains who gives the go for everything
Conduct action potentials and transmit synaptic signals
4 Parts of method to an Axon
in in on out
Input
integration
Conduct
Output
Morphological Characteristics of Axon(4)
1 or more axon per neuron
Varys in length but remains constant
1 or more pre and post synaptic specializations
No myelin
3 Cellular characteristics of Axons (SAD) and what do they do
Synapses: communication point between 2 neurons
axon: axon hillock and myelination
dendrites : receive and integrate synaptic signals
3 functional neuron classes (SIM)
sensory
interneuron
motor
3 structural neuron classes (the polar bears) One two many…
Uni polar-1
Bi polar-2
Multi polar-many
3 Types of Glia cells (MAM) and what other cells relate to those 3 groups ?
Myelinating Glia- schwann cells
Astroglia- Radial glia
Micro glia
what is myelinating glia ? (the big hug)
At Glia cell membrane, myelins produced and wraps around axins
2 Functions of myelinating Glia (AS)
Action potential conduction
Structural support
