Key Terms parathyroid hormone : a polypeptide hormone that is released by the chief cells of the parathyroid glands and is involved in raising the levels of calcium ions in the blood calcitriol : the active metabolite 1,dihydroxycholecalciferol of vitamin D3 that is involved in the absorption of calcium osteoclast : poor development of secondary sex characteristics in Geelong large multinuclear cell associated with the resorption of bone osteoblast : a mononucleate cell from which bone develops.
They also accelerate the breakdown of glucose in skeletal muscles and stored fats in adipose tissue. Key Terms insulin : a polypeptide hormone that regulates carbohydrate metabolism islets of Langerhans : regions in the pancreas that contain its endocrine cells exocrine : producing external secretions that are released through a duct glucagon : a hormone, produced poor development of secondary sex characteristics in Geelong the pancreas, that opposes the action of insulin by stimulating the production of sugar.
Figure 3. Thymosin, involved in the development of the immune response, is a hormone produced by the thymus.
Sections were counterstained with DAPI. Key Takeaways Key Points The thyroid gland is made up of thyroid follicles, which produce three main hormones. Although aromatase expression in chickens is a hallmark of the female program of development, experimental overexpression of aromatase leading to a gonad phenotype has not been reported in this or any other vertebrate species.
Key Terms adenohypophysis : the anterior lobe of the pituitary poor development of secondary sex characteristics in Geelong, producing and secreting several peptide hormones that regulate many physiological processes including stress, growth, and reproduction hypophysis : another name for the pituitary gland, which is located at the base of the brain hypothalamus : a region of the forebrain located below the thalamus that regulates body temperature, some metabolic processes and governs the autonomic nervous system diencephalon : the region of the human brain, specifically the human forebrain, that includes the thalamus, the hypothalamus, the epithalamus, the prethalamus or subthalamus, and the pretectum neurohypophysis : the posterior lobe of the pituitary gland, responsible for the release of oxytocin and antidiuretic hormone ADH.
Staining of the control males and females indicated normal expression levels and distribution of these proteins. Nervous system endocrine glands: the pineal gland : The pineal gland, found in the brain, produces the hormone melatonin. The control female and the RCASBP-Aromatase infected male have a thickened outer cortex, which increases in size progressively across all time points, and both have vacuolated medullary spaces arrows.
The adrenal medulla contains large, irregularly-shaped cells poor development of secondary sex characteristics in Geelong are closely associated with blood vessels.
It produces the hormone leptin in response to food intake. We found that ectopic overexpression of this enzyme was sufficient to induce a male-to-female gonadal sex-reversal in genetic ZZ embryos, characterised by the development of the left gonad into ovarian tissue. Nat Genet 7 : 34—39 doi: Key Terms atrial natriuretic peptide : a strong vasodilatory, peptide hormone, secreted by the cardiac muscle cells thymosin : a polypeptide hormone, secreted by the thymus, that stimulates the development of T cells as part of the immune system leptin : a protein hormone produced in adipose tissue; it plays a role in regulating appetite and metabolism anorexigenic : creating or inducing a state of anorexia orexigenic : that stimulates the appetite.
Oxytocin, known as the bonding hormone, has roles in various behaviors, including orgasm, social recognition, pair bonding, anxiety, and maternal behaviors. Blood cannot clot without sufficient calcium.