Question

_____Is a disorder where melanocytes are absent or fail to become pigmentogenic Hpocalcemia is prevented by the actions of______ The removal of the_____is lethal. A reduction in circulating levels of_____in women will also result in the reduction of calcium in the blood. Pigmentation in humans is_____controlled. the secretion of MSH can be inhibited by____. Define the following terms: a) Eumelanins:_____ b) Pheomelanins:_____ What actually determine the level of of MSH secretion in animals that are able to change color? Discuss three (3) physiological functions of calcium.

Answer 1

18. Vitiligo. It is a condition of forming white patches develops on the skin due to the improper function or absence of melanocytes.

19.parathyroid gland.

20.Thyroid gland. It is lethal because it regulates body metabolic activities.

21.oestrogen. During monopause in womens the decline in blood oestrogen levels leads to the bones to thin faster.

22.Genetically.Because a gene regulates the enzyme tyrosinase which regulatees the pigmentation of skin, hair,and eyes.

26.Physiological functions of calcium.

1.Play a significant role in signal transduction.

2. Involves in the formation of bones.

3.Crucial factor for all types of muscle contractions.