Which of the following is an incorrect matching of immune system cells and their functions?
a) Macrophage - process and presentation of foreign antigens to T cells
b) Dendritic cell - processes and presents antigen to T and B cells
c) B cells - process and presents antigen to helper T cells
d) Plasma cell - produces and secretes antibodies
e) All of these are correct matching of the cells and their functions
e
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Paralysis is the inability to control voluntary movement.
Answer the following statement true (T) or false (F)
While drinking a cola, you start laughing, causing some of it to come out of your nose. Why does this hurt when drinking cola normally does not?
A. There is a larger blood supply to the nasal cavity than oral cavity. B. There are more free nerve endings in the nasal cavity than oral cavity. C. The nasopharynx is lined by a serous membrane, while the oropharynx and laryngopharynx are lined by a mucous membrane. D. The nasopharynx is lined by pseudostratified columnar epithelium, while the oropharynx and laryngopharynx are lined by stratified squamous epithelium.
When macula densa cells experience increased Na+ concentration in the filtrate, they respond by
A. increasing aldosterone secretion. B. increasing afferent arteriole constriction. C. decreasing renin secretion. D. decreasing urine production. E. increasing renin secretion
Chloride ions
A. are found only inside cells. B. are part of the DNA molecule. C. are cations. D. are regulated with Na+. E. are not found in extracellular fluid.