Describe the shape, content, and function of an erythrocyte
What will be an ideal response?
An erythrocyte is a biconcave disc without a nucleus, about 2 × 7 µm in size. It is essentially a bag of hemoglobin (for O2 transport) and enzymes, including carbonic anhydrase, which is important in CO2 transport.
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Which of the following is not involved in creating the resting potential of a neuron?
A) diffusion of potassium ions out of the cell B) diffusion of sodium ions into the cell C) Membrane permeability for sodium ions is greater than for potassium ions. D) Membrane permeability for potassium ions is greater than for sodium ions. E) The interior of the plasma membrane has an excess of negative charges.
Which of the following is NOT a nonspecific defense mechanism?
A. Antibodies B. Phagocytosis C. Barriers to entry D. Inflammation
A patient visits her doctor and explains that since being hit on the cheek with a hockey puck she has been suffering from dry eyes and a dry mouth. It's apparent to the doctor that, since both lacrimal secretion and salivary secretion are affected, there may be damage to the ________ nerve.
A. trigeminal B. facial C. hypoglossal D. abducens E. glossopharyngeal
The ulnar notch is on the distal radius.
Answer the following statement true (T) or false (F)