ENDOCRINE SYSTEM
ADRENAL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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____ is a chemical substance, produced by a gland and carried in the bloodstream, which alters the activity of specific target organs.
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____ mechanism is an important type of control that is found in homeostasis. It responds when conditions change from the ideal or set point and returns conditions to this set point. There is a continuous cycle of events in this.
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____ is produced by the thyroid gland, which stimulates the basal metabolic rate. It controls the speed at which oxygen and food products react to release energy for the body to use.
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____ is produced by the adrenal glands in times of fear or stress. It targets vital organs, increases the heart rate and boosts the delivery of oxygen and glucose to the brain and muscles.
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Detailed explanation-1: -Thyroxine is produced by the thyroid gland, which stimulates the basal metabolic rate. It controls the speed at which oxygen and food products react to release energy for the body to use. Thyroxine plays an important role in growth and development. Thyroxine levels are controlled by negative feedback .
Detailed explanation-2: -(thy-ROK-seen) A hormone that is made by the thyroid gland and contains iodine. Thyroxine increases the rate of chemical reactions in cells and helps control growth and development. Thyroxine can also be made in the laboratory and is used to treat thyroid disorders.
Detailed explanation-3: -The main hormones produced by the thyroid gland are thyroxine or tetraiodothyronine (T4) and triiodothyronine (T3).
Detailed explanation-4: -The thyroid hormone thyroxine increases both basal metabolic rate and urinary water loss in mammals. Increases in basal metabolism and urinary water loss are likely to be detrimental to D.
Detailed explanation-5: -The hypothalamus and pituitary gland have important roles in detecting and controlling thyroxine levels. Lowthyroxine levels in the bloodstream stimulate the hypothalamus to release TRH and this causes the pituitary to release TSH so the thyroid releases more thyroxine. So blood levels return to normal.