In areas where the digestive tract is not covered in serosa it is covered by a fibrous connective tissue called
A) the plexus of Auerbach.
B) adventitia.
C) mucosa.
D) peritoneum.
E) None of the answers are correct.
B) adventitia.
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In an experimental situation, a rabbit is exposed to a viral antigen to which it makes antibodies. These antibodies are then purified and injected into a human with the same viral disease. This is an example of
A) innate immunity. B) active immunization. C) passive immunization. D) natural immunity. E) alloimmunity.
Which of the following spinal nerve areas is NOT matched with the correct number of nerve pairs?
A. Sacral - 5 B. Lumbar - 5 C. Cervical - 7 D. Thoracic - 12
A ________ is a slit-like opening
A) meatus B) process C) groove D) fissure
Which of these does not contribute to the cessation of the signal in a synaptic transmission?
A) Neurotransmitter escapes from the synapse into the nearby extracellular fluid. B) The synaptic knob reabsorbs some neurotransmitters by endocytosis. C) Synaptic vesicles secrete neurotransmitter by exocytosis. D) Neurotransmitters are no longer released. E) Enzymes in the postsynaptic cell break down some neurotransmitters.