Tag: pituitary gland and pineal gland
Questions Related to pituitary gland and pineal gland
The recently discovered hormone, melatonin is derived from serotonin which is synthesised by
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Adrenal gland
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Pineal gland
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Thymus gland
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Thyroid gland
The pineal gland is a small endocrine gland in the vertebrate brain. It produces melatonin, a serotonin derived hormone, that affects the modulation of sleep patterns in both seasonal and circadian rhythms.
Pineal body originates from
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Dorsal part of diencephalon
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Ventral part of diencephalon
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Ventral part of cerebellum
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Dorsal part of cerebellum
The diencephalon is the region of the embryonic vertebrate neural tube that gives rise to posterior forebrain structures including the thalamus, hypothalamus, posterior portion of the pituitary gland, and pineal gland. The pineal gland arises as a dorsal outgrowth of the caudal portion of the diencephalon. In the adult animal, it lies in the midline of the roof of the third ventricle.
According to recent knowledge, the pineal body is considered as
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A vestigial organ
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An organ of intelligence
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An endocrine gland
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An organ of involuntary action
Serotonin is secreted from
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$\alpha $- cells
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$\beta $- cells
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$\delta $- cells
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Enterochromaffin cells
Serotonin is the hormone that contributes the feeling of well being and happiness in animals including humans. It is basically derived from tryptophan and is located in the gastrointestinal tract (GI tract), blood platelets and central nervous system. 90% of the total serotonin is primarily located in GI tract in Enterochromaffin cells and used for regulation of intestinal movements. Hence, answer D is correct.
"Pinealocytes cells" occurs in
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Pineal body
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Pituitary gland
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Adrenal gland
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Thyroid gland
Pinealocytes are the main cells contained in the pineal gland, located behind the third ventricle and between the two hemispheres of the brain. The primary function of the pinealocytes is the secretion of the hormone melatonin, important in the regulation of circadian rhythms.
Which one of the following endocrine glands functions as a biological clock and neurosecretory transducer?
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Adrenal gland
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Thyroid gland
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Pineal gland
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Thymus gland
The pineal gland or epiphysis synthesizes and secretes melatonin hormone, that communicates information about environmental lighting to various parts of the body. It is attached to the roof of third ventricle in the rear part of brain. It functions as a biological clock and a neurosensory transducer, converting the neural information.
Pineal gland is located on the
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Ventral side of forebrain
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Lateral side of forebrain
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Dorsal side of forebrain
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Ventral side of midbrain
Serotonin and Melatonin are hormones, secreted by.
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Pancreas
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Pineal body
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Pituitary gland
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Thymus
Daily rhythms are associated with
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Pituitary gland
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Thymus
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Pineal gland
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Hypothalamus
Which of the following statements is correct?
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Argentaffin cells produce serotonin
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Villikinin is secreted by large intestine
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In cheilosis, deficient nutrient is nicotinamide
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Bleeding disease occurs due to deficiency of vitamin E