What are four ways in which drugs might influence the nervous system at the neuronal level?
What will be an ideal response?
A drug or disease agent might:(1) alter the synthesis, transport, storage, or release of a neurotransmitter; (2) modify the way in which the neurotransmitter interacts with the postsynaptic receptor; (3) influence the neurotransmitters' reuptake or destruction; and (4) replace or substitute for a deficient neurotransmitter.
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Compared to slow-twitch fibers, fast-twitch fibers respond to a stimulus with less delay and with a shorter contraction duration.
Answer the following statement true (T) or false (F)
Tissues damaged by myocardial infarction are replaced by new contractile cardiac muscle.
a. true b. false
Compare the hearts of a trained athlete and a non-athlete
What will be an ideal response?
What is an electromyograph?
A) Visual representation of action potentials moving along the sarcolemma B) Transmission of a signal between a neuron and a skeletal muscle cell C) A photograph of a skeletal muscle microscope slide D) Graphic representation of infarcts occurring in a heart