BIO 253 EXAM 2 LATEST ACTUAL EXAM 100
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES |AGRADE
Terms in this set (157)
- master regulatory system
What Is The Function Of The - sends and receives information
Nervous System? - maintains homeostasis
-acts as center for thought, learning, and memory
What is Sensory Input? Apart of the nervous system that detects change.
What is Integration and apart of the nervous system that is decision making.
Processing?
apart of the nervous system that stimulates muscles and
What is Motor Output?
glands to respond.
What Are The Main Cell Neurons and Neurogila
Types of Nervous System?
-one of the main cells in the NS
What are Neurons? - respond quickly to changes/stimuli
- conduct electric impulses via neurotransmitters
- one of the main cells in the NS
What is a Neuroglia Cell? - protect, support, insulate, and nourish neurons
- do not conduct electrical impulses like neurons
1. sensory receptor = sensor input
What Is The Flow Of
2. brain and spinal cord = intergration
Information In The NS?
3. effector = motor output
What is the CNS Made Up the brain and spinal cord
Of?
, What Is The PNS Made Up cranial nerves and spinal nerves. connects CNS to other
Of? body parts
- nervous system receives information
What Is Sensory Function? - sensory receptors gather info by detecting changes
- info is carried to the CNS
- NS coordinates sensory info to create sensations,
What Is Integrative
memory, and thoughts
Function?
- NS makes decisions on body's response to sensory info
- decisions are acted upon
- impulses are carried to effectors ( muscles and glands)
What Is Motor Function?
- divisions of motor portion of PNS: somatic NS and
autonmic NS
What Is The Somatic NS? it transmits VOLUNTARY instructions to skeletal muscles.
transmits INVOLUNTARY instructions from the CNS to
What Is The Autonmic NS?
smooth muscles, cardiac muscle, and glands.
1. neurofilaments
What Does The Cell Body
Consist Of?
2. chromatophilic substance
1. axon hillock
2. collaterals
What Does The Axon
3. axon terminal
Consist Of?
4. synaptic knob
5. may be myelinated
- PNS neuroglia that encase axon in a sheath
- schwann cell wrap tightly around axon in layers
What Is A Schwann Cell? composed of of myelin a lipoprotein mixture
- coating is called the Myelin Sheath
- Nodes of Ranvier
What Are The Nodes Of gaps in myelin sheath between schwann cells.
Ranvier?
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