Intrinsic factor aids the absorption of ________ across the intestinal lining.
A) vitamin C
B) vitamin B12
C) vitamin D
D) vitamin K
E) vitamin B5
B) vitamin B12
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Blood vessels that supply the spinal cord run along the surface of the
A) pia mater. B) dura mater. C) epidural space. D) subdural space. E) arachnoid mater.
The cells that perform immunological surveillance are the ________ cells
A) NK B) plasma C) B D) helper T E) suppressor T
A compound action potential is recorded using electrodes on a nerve. How does a nerve differ from an axon? Amplitude and duration of a compound action potential vary according to the stimulus intensity applied to the nerve. Given that there is no such variation in the action potential of a single axon, how can you explain this?
What will be an ideal response?
The pharynx functions as a ________, whereas the larynx functions as a ________.
A. common passageway for air and food; passageway for air only B. passageway for air only; passageway for air and food C. passageway for food only, passageway for air and food D. common passage for air and food; passageway for food only