Which one of the following situations is not associated with the dysfunction of excitation-contraction coupling in myocardium? A: Acidosis B: The obstruction of L-type calcium channels C: The increased activity of myosin ATPase in myocardium D: The increased foetus troponin E: The decreased activity of sarco-endoplasmic reticulum calcium-ATPase

Which<br/>can be seen in CRF patient about calcium and phosphate() A: calcium↓<br/>phosphate↑ B: calcium↑<br/>phosphate↓ C: calcium↓<br/>phosphate↓ D: calcium↑<br/>phosphate↑ E: none of above

The main function of calcitonin is A: increase blood calcium and blood phosphorus B: decrease blood calcium and blood phosphorus C: decrease blood calcium and increase blood phosphorus D: increase blood calcium and decrease blood phosphorus E: involve in the normal calcium regulation

The following statements , _____, illustrate the functions of calcium. A: nerve cells need calcium for nerve impulse conduction B: muscle needs calcium to contract C: blood needs calcium to clot D: bone needs calcium to make itself hard

When KMnO4 is used to determine the content of calcium in calcium salt, the indicator used is methyl orange.

The treatment sequence for tetany of vitamin D deficiency is:( ) A: control convulsion→calcium supplement→vitamin D B: calcium supplement→control convulsion→vitamin D C: vitamin D→calcium supplement control→ convulsion D: vitamin D→control convulsion→calcium supplement

Paratfollicular cells or C cells of thyroid also secrete calcitonin, which has the function of ( ). A: Enhancing osteoblast activity B: Promoting the conversion of bone calcium into blood calcium C: Promoting calcification of bone tissue D: Reducing blood calcium E: Elevating blood calcium

When KMnO4 is used to determine the content of calcium in calcium salt, the indicator used is methyl orange. A: 正确 B: 错误

An excess of calcium in the blood is called_____.

The availability of calcium is highest in which of the following condition? A: The cation exchange capacity is 24 cmol(+)/Kg, while the exchangeable calcium is 12 cmol(+)/Kg B: The cation exchange capacity is 30 cmol(+)/Kg, while the exchangeable calcium is 8 cmol(+)/Kg C: The cation exchange capacity is 8 cmol(+)/Kg, while the exchangeable calcium is 5 cmol(+)/Kg D: The cation exchange capacity is 15 cmol(+)/Kg, while the exchangeable calcium is 6 cmol(+)/Kg