Most aquatic organisms excrete nitrogenous wastes in the form of
a. urea.
b. ammonia.
c. uric acid.
d. glutamine.
B
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Cells that reside in a specific connective tissue type for an extended period of time are called
A. transitional cells. B. stem cells. C. fixed cells. D. wandering cells.
Muscle cells are made up of ________.
A. Z lines B. myosin C. myofibrils D. actin
In adults, the spinal cord is not the same length as the vertebral canal, and most of the lumbar part of the spinal cord is within
A. the coccyx. B. the sacrum. C. the cervical vertebrae. D. the thoracic vertebrae. E. the cauda equina.
Myasthenia Gravis is a disease characterized by the production of antibodies against nicotinic acetylcholine receptors, resulting in a decreased number of functioning receptors at motor end plates. Which kind of drug would most likely help with the symptoms of Myasthenia Gravis?
A. An acetylcholinesterase inhibitor B. A muscarinic antagonist C. A monoamine oxidase inhibitor D. A GABA-ergic antagonist