The ________ tonsils are the largest, and their surgical removal (tonsillectomy) used to be one of the most common surgical procedures performed in children.
A. lingual
B. nasopharyngeal
C. adenoid
D. palatine
E. pharyngeal
Answer: D
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If a graded potential on a dendrite results in a 5mV depolarization, the depolarization at the axon hillock of the axon might be less than 5mV.
Answer the following statement true (T) or false (F)
Myoglobin ________.
A) breaks down glycogen B) is a protein involved in the direct phosphorylation of ADP C) stores oxygen in muscle cells D) produces the end plate potential
Match the potential or potential change with the causative circumstances. Assume ion movements are net movements. Answers may be used more than once or not at all.
1. Na+ enters the cell 2. K+ leaves the cell 3. Cl- enters the cell 4. membrane potential is 0 mV A. resting membrane potential B. hyperpolarization C. depolarization D. repolarization E. more than one of the answers
What cofactor do matrix metalloproteinases need to be functional?
A. Chromium B. Calcium C. Copper D. Zinc