Reading...
Play button
Play button
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;
24 Cards in this Set
- Front
- Back
|
What does the Nervous System provide?
|
Swift, brief responses to stimuli
|
|
|
What does the Endocrine System adjust?
|
Metabolic operations and directs long-term changes
|
|
|
What 3 steps are used to carry out Nervous System tasks?
|
•Sensory information in ( afferent info )
• Information processing ( brain / spinal cord ) • Motor response out ( efferent info ) |
|
|
What does the Nervous System consist of?
|
Neural tissue, connective tissues, blood vessels, brain and spinal cord
|
|
|
What are the functions of the CNS?
|
Process and coordinate sensory data, motor commands, and higher functions of the brain
|
|
|
What is the PNS composed of?
|
Nerves and ganglion. Includes all neural tissue outside the CNS
|
|
|
What is a NERVE?
|
A bundle of nerve fibers wrapped in fibrous connective tissue
|
|
|
What is a GANGLION?
|
A knot-like swelling in a nerve where neuron cell bodies are concentrated
|
|
|
What are the functions of the PNS?
|
Deliver sensory info to the CNS ( afferent ) & carry motor commands to peripheral tissues and systems ( efferent )
|
|
|
How many pairs of nerves are there?
|
43.
12 Cranial & 31 Spinal |
|
|
What do RECEPTORS do?
|
Detect changes or respond to stimuli
|
|
|
What do EFFECTORS do?
|
Respond to efferent signals usually w / muscles and glands
|
|
|
The SYMPATHETIC DIVISION of the ANS has what?
|
A stimulating effect
|
|
|
The PARASYMPATHETIC DIVISION of the ANS has what?
|
A relaxing effect
|
|
|
What does excitability (irritability) do?
|
Respond to environmental changes by producing action potentials
|
|
|
What happens with CONDUCTIVITY?
|
Neurons respond to stimuli by producing action potentials quickly propagated down membranes
|
|
|
What is SECRETION?
|
When an action potential reaches the end of an axon, a neurotransmitter is secreted crossing the synapse & stimulating the next cell
|
|
|
What is a Multi-Polar neuron?
|
One axon and multiple dendrites, most common
|
|
|
What is a Bi-Polar neuron?
|
One axon and one dendrite
|
|
|
What is a Uni-Polar neuron?
|
A single process leading away from the soma
|
|
|
What is a Anaxonic neuron?
|
Many dendrites & NO axon
|
|
|
What is COLLATERAL in an axon?
|
Where the axon splits
|
|
|
What is the Initial Segment of an axon?
|
Where the action potential is 1st generated
|
|
|
What is the Axon Hillock?
|
Where the axon and cell body meet
|
