The gland that secretes the hormone calcitonin is the: MCQ with Answer and Explanation

Explanation:
Tidal volume (TV) is the amount of air breathed in or out in one normal respiratory cycle, about 500 mL in a healthy adult. Vital capacity is the maximum air exhaled after a maximum inspiration. Total lung capacity is the total volume of air lungs can hold. Residual volume is the air remaining in lungs after maximum expiration to prevent alveolar collapse.

Explanation:
Myoglobin is an oxygen-binding protein in muscle. Hemoglobin contains iron and is red; hemocyanin contains copper and is blue. Hemoglobin is in RBCs.

Explanation:
During metaphase, the nuclear envelope has completely disappeared, and the chromosomes, attached to spindle fibers at their kinetochores, are moved to the center of the cell. This alignment of chromosomes at the cell equator is called the metaphase plate. This stage is crucial for the equal distribution of genetic material to daughter cells.