Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
32 Cards in this Set
- Front
- Back
|
Involved in voluntary and involuntary actions within the body |
Nervous System |
|
|
Contains brain and spinal cord |
Central Nervous System |
|
|
Involved in processing incoming info and organizes/determines motor outputs |
Central Nervous System |
|
|
Carries info into (CNS) |
Peripheral Nervous System |
|
|
Takes away motor command out of CNS and into periphery |
Peripheral Nervous System |
|
|
Involved in communication of info, processing incoming sensory info and initiating changes in body |
Neurons |
|
|
3 different types of neurons |
1. Afferent 2. Interneurons 3. Efferent |
|
|
Carries info into CNS |
Afferent neurons |
|
|
Neurons completely contained with CNS and processes info |
Interneurons |
|
|
Takes info away from CNS |
Efferent neurons |
|
|
Structure of a neuron |
1. Dendrites 2. Soma 3. Axon 4. Axon hillcock 5. Axon terminal |
|
|
- thin cell - process where info enters cell |
Dendrites |
|
|
- Contains standard cell components e.g organelles |
Soma |
|
|
Place where glycolysis and protein synthesis takes place |
Soma |
|
|
-long projections -quickly moves info from one end of cell to other |
Axon |
|
|
Important in initiating fast conduction of info down length of axon |
Axon hillcock |
|
|
Where info leaves cell and influences whatever cell is next in line |
Axon terminal |
|
|
Used by neurons to move items from axon terminal to soma |
Cytoskeleton |
|
|
Motor proteins use microtubules to shuttle various items |
Cytoskeletal transport |
|
|
-provide structural support for axon and "roads" for intercellular transport - run down length of axon |
Microtubules |
|
|
2 types of transport |
Anterograde and Retrograde |
|
|
Items moving away from soma are carried by motor proteins down cytoskeletal elements |
Anterograde Transport |
|
|
Items moving toward soma carried by motor proteins |
Retrograde Transport |
|
|
Insulate axons by wrapping in rich cellular projections |
Myelinating cells |
|
|
Myelinating axons in (PNS) |
Schwann Cells |
|
|
2 types of transport |
Anterograde and Retrograde |
|
|
-provide support for neurons and help effectively do their job -found in Nervous System |
Glial cells |
|
|
Insulate axons by wrapping in rich cellular projections |
Myelinating cells |
|
|
Myelinating cells in (CNS) |
Oligodendrocytes |
|
|
2 types of myelinating cells |
Oligodendrocytes and Schwann cells |
|
|
-help provide proper nutrition and waste clearance for neurons -help provide proper extra cellular fluid ion concentrations |
Astrocytes |
|
|
-help clear cellular debris and degrade damaged neurons -immune like cells found in Nervous System |
Microglia |
