Answer:
Pineal gland
Explanation:
The suprachiasmatic nucleus is the paired nucleus made of about 1000 neurons each in the hypothalamus. The suprachiasmatic nucleus is involved in maintaining the endogenous clock or the internal clock.
The suprachiasmatic nucleus controls the circadian rhythm by controlling the amount of melatonin. The melatonin is produced by the pineal gland from the serotonin and tryptophan precursors. The hypothalamus thus controls the amount of the melatonin by regulating the pineal gland.
Thus, Pineal gland is the correct answer.
Answer:
Alzheimer's disease
Explanation:
Neurodegenerative disease is the condition which is caused when the fundamental unit of the nervous system called neurons degenerate. The two main neurodegenerative diseases are Alzheimer's disease and Parkinson's disease.
The Parkinson's disease is the disease which affects the musculoskeletal system but the Alzheimer's patient is not able to recall the memory and events, therefore, interfere with the deterioration of the cognitive and emotional abilities.
Thus, Alzheimer's is the correct answer.
Answer:
Mantle is composed of rocks where as core is composed of metals.
Explanation:
Mantle and core both are part of the earth's crust. Though there have a difference between them- The mantle is consists of semi solidified rocks and core is consists of hot metals like iron and nickel. Core is the inner most layer surrounding the earth's center. The portion of the interior beyond the crust is called mantle. The core is the densest layer of the earth with its density ranges from 9.5-14.5 g/cm^3 where the density of mantle varies between 2.9-3.3 g/cm^3.
