_____ is required for thyroid hormone synthesis.
Fill in the blank(s) with the appropriate word(s).
Iodine
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Which of the following is not true of cardiac myocytes?
A. They are joined by intercalated discs. B. They have T tubules that admit extracellular calcium. C. Mitochondria make up about 2% of the cell volume. D. They are striated. E. They usually have one nucleus.
Blood pressure is highest in the aorta and lowest in the:
a. arterioles b. capillaries c. arteries d. superior and inferior vena cava
The __________ stores excess glucose and releases it into the blood when needed.
A. pancreas B. stomach C. liver D. spleen E. small intestine
Which of the following chemical reactions best represents the synthesis of ATP?
A. ATP + H2O ? ADP + Pi + energy B. ATP + energy ? ADP + H2O C. ADP + Pi + energy ? ATP + H2O D. ATP + ADP ? ATP E. ADP + ADP + ADP ?ATP + energy