prothoracic gland
Quick Summary
The prothoracic gland is a pair of endocrine organs found in the thorax of some insects. These glands play a crucial role in controlling the process of molting, which is the shedding of the exoskeleton to allow for growth.
The molting process is regulated by hormones. A neurohormone from the brain, known as the prothoracotropic hormone (PTTH), stimulates the prothoracic glands. In response, the prothoracic glands release ecdysone, a steroid hormone that initiates the shedding of the old cuticle and the development of a new one. This hormonal signaling is essential for insect development and metamorphosis.123
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animal developmentMetamorphosis…affect molting but stimulates the prothoracic gland, a loose mass of secretory cells situated in the thorax in close association with tracheal tubes. In response to the stimulation by the brain hormone, the prothoracic gland releases into the blood a second hormone, the molting hormone, or ecdysone. Under the influence…
Read More…affect molting but stimulates the prothoracic gland, a loose mass of secretory cells situated in the thorax in close association with tracheal tubes. In response to the stimulation by the brain hormone, the prothoracic gland releases into the blood a second hormone, the molting hormone, or ecdysone. Under the influence…
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insectRole of hormonesThis hormone acts upon the prothoracic gland, an endocrine gland in the prothorax, which in turn secretes the molting hormone, a steroid known as ecdysone. Molting hormone then acts on the epidermis, stimulating growth and cuticle formation. Metamorphosis likewise is controlled by a hormone. Throughout the young larval stages a…
Read MoreThis hormone acts upon the prothoracic gland, an endocrine gland in the prothorax, which in turn secretes the molting hormone, a steroid known as ecdysone. Molting hormone then acts on the epidermis, stimulating growth and cuticle formation. Metamorphosis likewise is controlled by a hormone. Throughout the young larval stages a…
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nervous systemArthropods…a non-neural endocrine gland, the ecdysial gland, located in the thorax. The ecdysial glands in turn release the hormone ecdysone, which initiates molting during larval development and also stimulates differentiation into adult tissues. Another hormone, however, the juvenile hormone, keeps tissue in a juvenile or larval form. This hormone is…
Read More…a non-neural endocrine gland, the ecdysial gland, located in the thorax. The ecdysial glands in turn release the hormone ecdysone, which initiates molting during larval development and also stimulates differentiation into adult tissues. Another hormone, however, the juvenile hormone, keeps tissue in a juvenile or larval form. This hormone is…
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