Multiple Choice
Use the following information when answering the corresponding questions) .
"Marine cone snails from the genus Conus are estimated to consist of up to 700 species. These predatory molluscs have devised an efficient venom apparatus that allows them to successfully capture polychaete worms, other molluscs or, in some cases, fish as their primary food sources. … conotoxins from Australian species of Conus … have the capacity to inhibit specifically the nicotinic acetylcholine receptors in higher animals." B. G. Livett, K. R. Gayler, and Z. Khalil. 2004. Drugs from the sea: Conopeptides as potential therapeutics. Current Medicinal Chemistry 11:1715-23.)
-This particular conotoxin inhibits acetylcholine receptors that are located
A) on motor neuron dendrites.
B) on the postsynaptic membrane, on the muscle cell.
C) along the motor neuron axon.
D) on the presynaptic membrane of the neuromuscular junction.
Correct Answer:
Verified
Correct Answer:
Verified
Q3: Food moves along the digestive tract as
Q4: What do the calcium ions released into
Q5: Which muscle types) is/are involuntary?<br>A) skeletal muscle<br>B)
Q6: During the contraction of a vertebrate skeletal
Q7: How does skeletal muscle return to its
Q9: Skeletal muscle contraction begins when calcium ions
Q10: Compared with slow oxidative muscle fibres, those
Q11: Motor neurons release the neurotransmitter acetylcholine ACh),
Q12: R. McNeill Alexander demonstrated that tendons improve
Q13: A patient is hospitalized with muscle spasms