The endocrine system consists of a variety of glands, which are located throughout the body, and its function is to regulate a number of processes throughout the body. The system has a hierarchical structure, with the hypothalamus r...
Protein hormones constitute a class of molecules that are secreted by endocrine glands. They act as chemical messengers by binding to receptors which then triggers a signaling cascade and leads to a physiological response. Insulin represents a classic example. After a meal, insulin facilitates glucose...
Figure 1. Sebaceous glands secrete sebum, a chemical mediator that lubricates and protect the skin from invading microbes. Sebum is also a food source for resident microbes that produce oleic acid, an exogenously produced mediator. (credit micrograph: Micrograph provided by the Regents of University...
Chemical digestion involves the catalytic processing of food in the gastrointestinal (GI) tract by digestive enzymes, aided by co-secreted substances, required to break down the food substances into simpler molecules for absorption. This process is necessary for transport and subsequent metabolic reaction...
Hormones: chemical messengers that are manufactured by the endocrine glands, travel through the bloodstream, and affect other tissues. Endocrine system (male) Endocrine system (female) Growth hormone: a hormone that stimulates growth in animal or plant cells, secreted by the pituitary gland. Your ne...
描述 Parathyroid hormone is the most important endocrine regulator of calcium and phosphorus concentration in extracellular fluid. This hormone is secreted from cells of the parathyroid glands and finds its major target cells in bone and kidney. Another hormone, parathyroid hormone-related protein, binds...
ENDOCRINESYSTEMENDOCRINESYSTEM HORMONESHORMONES ChemicalMessengersChemicalMessengers SecretedByGlandsSecretedByGlands (pituitary,ovary,testis,adrenal)(pituitary,ovary,testis,adrenal) IntotheBloodstreamIntotheBloodstream ChemicalConfusion •Environmentalchemicalscantrickor ...
Concept Key Terms: • Adrenal: endocrine glands that are located on top of the kidneys and are responsible for several hormones like aldosterone, corticosteroids, • Aldosterone: hormone secreted from the adrenal gland to signal the kidneys to retain sodium from the excretion • Autocrine: a ...
Hormones are informational molecules secreted by the ductless endocrine glands in one part of the body in stimulate or inhibit specific physiological processes for the good of the body as a whole. Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class...
A multitude of endocrine disorders exist, stemming from different sites throughout the body, collectively forming a spectrum of diseases. Endocrine glands are sometimes affected by disorders, while other disorders stem from endocrine cells scattered throughout non-endocrine tissues. Distinct embryological ...