What is responsible for initiating contraction of smooth muscle?
a. stimulation by motor neurons
b. inhibition of acetylcholinesterase
c. membrane potential drifting to threshold as a result of automatic changes in ion movement across the membrane
d. excitation of the gap junctions by transmitter substance
e. stimulation by the autonomic nervous system
C
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Which type of tissue contains cells called neurons?
A. Muscle tissue B. Nervous tissue C. Connective tissue D. Epithelial tissue
A patient with respiratory splinting:
A) is often tachypneic with deep breathing. B) is holding his or her arm against the chest. C) is breathing shallowly to alleviate chest pain. D) has an increased tidal volume due to a chest injury.
__________ is a type of synaptic plasticity that results in a decrease of neurotransmitter release after repeated action potentials
A) Synaptic facilitation B) Post-tetanic potentiation C) Synaptic depression D) Presynaptic depression Fill in the blank with the correct answer.
Select the pair below that does not match
A) Chemoreceptors - detect chemicals B) Photoreceptors - detect light C) Mechanoreceptors - detect magnetic fields D) Thermoreceptors- detect temperature