Which of the following organs does not produce secretions that are directly involved in chemical digestion?
a. esophagus.
b. stomach.
c. pancreas.
d. small intestine.
e. liver
A
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Type II cells that line the alveoli are responsible for the production of ________.
A. carina B. surfactant C. carbon dioxide D. nitrogen
In the thoracic region, the ventral rami of spinal nerves form __________; elsewhere the ventral rami form __________.
A) intercostal nerves, plexuses B) dorsal nerves, ganglia C) ventral nerves, splanchnic nerves D) plexuses, dermatomes E) ganglia, phrenic nerves
One cause of spastic paralysis might be
A. inhibition of acetylcholine molecules. B. blockage of acetylcholine receptors. C. inhibition of acetylcholinesterase. D. destruction of synaptic vesicles. E. increase in the amount of acetylcholinesterase.
Which is not true about periosteum?
A. It includes outer fibrous and inner cellular layers. B. It covers the entire bone surface, with the exception of articular areas. C. It provides stem cells for bone growth and repair. D. It is anchored to the bone by collagen fibers. E. It is composed of dense regular connective tissue.