This figure shows respiratory control centers in the brainstem. What does number 1 indicate?
A. Dorsal respiratory group
B. Apneustic center
C. Ventral respiratory group
D. Pontine respiratory center
Answer: D
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Which of the following pumps is specifically used to return Ca2+to the sarcoplasmic reticulum?
A) Ca2+ATPase B) NaCaX C) parvalbumin D) SERCA
Antibody functions include all of the following except ________.
A) binding and inactivating chemical toxins released by bacteria or other microorganisms B) cross-linking cell-bound antigens on red blood cells when blood types are properly matched C) linking soluble antigens together so that they fall out of solution D) targeting foreign cells so that complement proteins can cause cellular lysis
A sarcomere is defined as the distance from one ________ to the next.
A. A band B. M line C. I band D. H zone E. Z disc
Substance A, a penetrating solute, crosses the membrane at a rate of 10 molecules per second. When a patient has a fever and body temperature is elevated, we would expect the cell to have a rate of
A. less than 10 molecules per second. B. more than 10 molecules per second. C. 10 molecules per second.