Exam #3 - just nervous system stuff Flashcards
What nervous system matches these nerves?
Cerebellum, temporal lobe, brain stem, spinal cord, cerebral cortex
central nervous system
What nervous system matches these nerves?
Ulnar nerve, ocular nerve, vagus nerve, sciatic nerve, sensory nerve for the skin, olfactory nerve, and musculocutaneous nerve
peripheral nervous system
What functional classification matches these conditions?
Impulse traveling from the intestines to the spinal cord, pain from a bruise, joint swelling, stomach nausea, temperature
Sensory division of the peripheral nervous system
What functional classification matches these conditions?
Impulse traveling from the spinal cord to the muscles, knee extension, eye blinking
Motor division of the peripheral nervous system
The PNS can be thought of as having which of the subcategories?
A sensory and motor division, and within the motor division there is a voluntary and involuntary division (sympathetic and parasympathetic division)
What is the difference between a dendrite and an axon?
A dendrite serves as a sensory regions of the nerve, while an axon transmits an impulse away from the nerve
What nerve would conduct the impulse the quickest between two points?
A myelinated fiber
Dendrite
- Feels pressure, senses a change in temperature
- Treelike
Axon
Serves as the extension of the nerve through which a nerve impulse travels away from the cell body to the synapse
Nodes of Ranvier
- This is the unmyelinated area of a myelinated nerve
- The areas which depolarize along the axon
Myelin
- Lipid (fat)
- An insulating material that improves impulse speed
Ganglia
A collection of cell bodies in the PNS
Neurofilament
Adds structure to the nerve cell
Axon terminal
The synapse
Nissl bodies
- Place of neurotransmitter generation
- Rough endoplasmic reticulum
Proprioceptive neuromuscular facilitation utilizes what
A golgi tendon
When the muscle spindle of an agonist is activated, the agonist _____ while the antagonist_____
contracts, relaxes
The golgi tendon causes the agonist to _______ and the antagonist to _______
relax, contract
A concussion is
It is when the brain is injured because it struck the inside of the skull
Why are sports like hockey, football and boxing not good for your brain?
Impact can cause the cerebellum to become thinner and negatively restructure the brain
Multiple sclerosis refers to what
The lack of myelin in CNS nerves
What would happen if your muscle spindles did not work and you turned out the lights?
You would fall to the floor like a ton of bricks
what is a purpose of doing a pateller-reflex test?
To check the nerve relay through L2-L4
what is the best way to activate the golgi-tendon through PNF stretching?
Contract-relax
