Lecture 13 Neuromuscular System

supulora's version from 2015-07-02 12:43


Question Answer
The cerebellum is considered:" Motor Control Center"
The spinal cord is considered:"Communication Highway"
Do we have more sensory or motor neurons? What is the ratio?Sensory > Motor. 20:1 ratio
How do nerve cells communicate?Synapses
What is spatial summation?Simultaneous stimulation of different presynaptic terminals of the same neuron
What is temporal summation?Repeated sub threshold stimulation from the same presynaptic terminal
What are some examples of Excitatory NT's?Acetylcholine, Norepinephrine, Dopamine, Serotonin
What are IPSP's and what is their purpose?Inhibitory Postsynaptic Potentials, serve PROTECTION function, reduces the input of unwanted stimuli
T/F there is no release of inhibitory neurotransmitters at the motor end plate. TRUE
What does a motor unit consist of?1.) Alpha motor neuron 2.) the specific muscle fibers it innervates
All muscle fibers within any given motor unit are of the ----- overall typeSAME
What does a motor neuron pool consist of?All the alpha motor neurons that innervate a single muscle (e.g., biceps)

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