Which of the following causes a left shift in the oxygen dissociation curve (normal blood pH: 7.35-7.45)?

One function of the lymph nodes is in the B lymphocytes that produce antibodies that will attract scavenger cells to ________ enemy antigens

a. filter b. eat c. unleash d. host

The most common cause of failure of palatal nerve blocks is:

A) Solution deposited too far from deposition site B) Solution deposited too rapidly and it backflows into the mouth C) Vasoconstrictor constricts the vessels preventing the flow of solution to the nerve D) Inadequate topical and pressure anesthesia prevent adequate penetration depth