Each taste bud contains approximately 40 slender receptors, called ________, and a number of supporting cells.
Fill in the blank(s) with the appropriate word(s).
gustatory cells
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Answer the following statements true (T) or false (F)
1. The directional movement of cells in response to chemicals is called chemotaxis. 2. Substances capable of triggering the adaptive immune system and provoking an immune response are called antigens. 3. Soluble proteins secreted by plasma cells are called antibodies. 4. A given pathogen will provoke either a cell-mediated response or an antibody-mediated response but not both. 5. Fever is seldom beneficial because it speeds up the cellular metabolic rate and will not allow antigen-antibody reactions to occur.
In humans, blood returning from the big toe passes from the inferior vena cava to the _______.
A. left atrium>left ventricle>aorta B. left atrium>left ventricle>pulmonary trunk C. right atrium>right ventricle>aorta D. right atrium>right ventricle>pulmonary trunk
Of the following muscles types, which one has long, cylindrical-shaped cells?
A) skeletal muscle B) cardiac muscle C) smooth muscle D) all are about the same
An electroencephalogram obtained from an adult who is thinking would probably display many ________ waves.
A. alpha B. theta C. delta D. beta