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The image displays two diagrams related to endocrine glands and hormones. The first diagram, labeled "Figure 14:13", illustrates the adrenal gland. It shows a cross-section with an outer cortex and an inner medulla. An arrow indicates that "Adrenalin and noradrenalin" are secreted by the medulla. Below this, a list details the functions of these hormones, including dilating coronary arteries, constricting peripheral arteries, converting glycogen to glucose, relaxing bronchial muscles, and dilating pupils. The text above the diagram states these hormones prepare the body to deal with fear, excitement, and danger. The second diagram, labeled "Figure 14:14", depicts the "Islets of Langerhans". It shows two branches originating from this label, one leading to "Insulin" and the other to "Glucagon". Underneath "Insulin", its functions are listed as reducing blood glucose level, enabling glucose to enter cells, promoting conversion of glucose to glycogen, promoting storage of fat, and promoting synthesis of protein. Underneath "Glucagon", its functions are listed as raising blood glucose level, converting liver glycogen to glucose, and promoting gluconeogenesis. The accompanying text explains that the islets of Langerhans are clusters of cells in the pancreas that produce glucagon (from alpha cells) and insulin (from beta cells), which regulate blood glucose levels. The text also discusses the normal blood glucose level and the consequences of insufficient insulin, such as diabetes mellitus, leading to dehydration and polydipsia. The image does not contain any information related to Jalingo, Nigeria.
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