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Test 2
N/A
28
Anatomy
Undergraduate 2
10/09/2009

Additional Anatomy Flashcards

 


 

Cards

Term
Brain
Definition
Billions of neurons
Term
Cranial Nerves
Definition
12 paris of nerves attached to base of brain
Term
Spinal cord
Definition
attaches brain stem and completely encircled by vertebrea column
Term
Spinal nerve
Definition
31 pairs emerging from cord; each serves a specific area on R&L side of body
Term
Sensory receptor
Definition
dendrites of sensory neurons or specialized cells that monitor homeostasis
Term
Sensory
Definition

**INPUT**

 

Receptors detect internal and external stimuli, which is put into CNS through nerves

Term
Intergration
Definition
Analyze, store info, make decisions for apporpriate responses
Term
Motor
Definition

**Output**

 

elicit an appropriate response by activating effectors through nerves

Term
Two types of cells in nervous tissue
Definition

Neuron

Neuroglial

Term
Neuron
Definition
able to respond to a stimulus and convert it into an action potential
Term
stimulus
Definition
any change in the internal or external enviroment stong enough to generate an AP
Term

Action potential

(impulse)

Definition
electrial signal that travels on a neuron
Term
Dendrites
Definition

short tree like processes sticking out from the cell body

 

**recieve info**

Term
Cell body
Definition

contains nucleus and other organelles

 

**Receive info**

 

Term
Axon
Definition
Long slender projection- sends impulses away from cell body
Term
Synapse
Definition

site where a neuron and an efector can communicate

 

 Effector can be another neuron, a muslce fiber, or a gland

Term
Synaptic end bulb
Definition

at the end of axon terminals

Contain NT

Term
Neuroglial Cells
Definition

Make up 1/2 volume of CNS

do not generate impulses

can multiply and divide in mature NS

Term
CNS neuroglial cells
Definition

Astrocytes

microglia

oligodendrocytes

ependymal

 

Term
PNS nueroglial cells
Definition

schwann

satellite

Term
Astrocytes
Definition
help to form blood brain barrier
Term
microglia
Definition
engulf foreign microbes and cellular debris
Term
oligodendrocytes
Definition
produce and maintain myelin sheath of CNS axons
Term
ependymal cells
Definition
line ventricals (open places in the brain with fluid) of the brain and produce CSF and aid in its circulation
Term
Schwann
Definition
produce and maintain myelin sheath of PNS axons
Term
Satellite cells
Definition
regulate exchange of material between neurons and Extracellular material
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