Sally has elevated blood calcium levels. Which substance would you expect to find in high levels in response to this condition?
A. Growth hormone
B. Vitamin D
C. Sex hormones
D. Calcitonin
E. Parathyroid hormone
Answer: D
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In fishes and amphibians, spongy myocardium receives oxygen from
A) Blood in the heart chambers. B) Coronary arteries. C) Trachea. D) Pericardial fluid.
The reaction rates of many chemical reactions that occur in the body are controlled by special protein molecules called ________.
Fill in the blank(s) with the appropriate word(s).
What physical changes affect the volume of the lungs?
A) The contraction of the abdominal muscles affect the volume of the lungs. B) The degree of flexion and extension of the trunk affect the volume of the lungs. C) The movements of the upper limbs affect the volume of the lungs. D) The movements of the diaphragm and rib cage affect the volume of the lungs. E) The contraction of tracheal smooth muscle affect the volume of the lungs.
Peter receives a blow to the front of the knee on the soccer field and collapses. The bruised bone is the ___________
Fill in the blank(s) with the appropriate word(s).