The property that allows the heart to initiate each heartbeat itself is called ________.
Fill in the blank(s) with the appropriate word(s).
autorhythmicity
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The pelvic girdle consists of each of these bones EXCEPT the ________.
A. clavicle B. ischium C. ilium D. pubis
Opsonization involves
A. cross-linking several antigens together so that they are no longer soluble, and it is facilitated by the Fc region of the antibody. B. marking a target for phagocytosis, and it is facilitated by interaction of the Fc region of the antibody with a phagocyte. C. activation of NK cells, and it is a function of the antigen-binding site of the antibody. D. fixation of antibodies in the IgG and IgM classes, and it involves the antigen-binding site of the antibody.
The lumbar regions are located lateral to the umbilical region.
Answer the following statement true (T) or false (F)
What keeps the HCN channels open?
A. G-proteins B. cAMP C. Ca2+ D. ATP