BASIC HUMAN ANATOMY - PART 8

Trong cơ thể con người, hệ thống nội tiết bao gồm một số các tuyến ductless sản xuất kích thích tố cụ thể của họ. Bởi vì các hormone được vận chuyển đến các cơ quan mục tiêu của họ bằng máu, các cơ quan nội tiết (tuyến) phong phú cung cấp với mạch máu. c. Tốt hơn được biết đến nội tiết bộ phận cơ thể của con người | b. The Endocrine System. In the human body the endocrine system consists of a number of ductless glands producing their specific hormones. Because these hormones are carried to their target organs by the bloodstream the endocrine organs glands are richly supplied with blood vessels. c. Better Known Endocrine Organs of Humans. The better known endocrine organs are the 1 Pituitary body. 2 Thyroid gland. 3 Parathyroid glands. 4 Pancreatic islets islands of Langerhans . 5 Suprarenal adrenal glands. 6 Gonads female--ovaries male--testes . In addition there are several other endocrine organs less well understood and other organs suspected to be of the endocrine type. See figure 10-1 which shows the better known endocrine glands and their locations. PITUITAR PINEAL PANCREATIC ISLETS ADRENAL SUPRARENAL GLAND THYROID GLAND PARATHYROID GLANDS -OVARY FEMALE I GONADS TESTIS MALE Figure 10-1. The endocrine glands of the human body and their locations. MD0006 10-3 Section II. THE PITUITARY BODY 10-3. GENERAL a. Location. The pituitary body is a small pea-sized and pea- shaped structure. It is attached to the base of the brain in the region of the hypothalamus see paragraph 11 -9 . In addition it is housed within a hollow of the bony floor of the cranial cavity. This hollow is called the sella turcica Turk s saddle . b. Major Subdivisions. The pituitary body is actually two glands-- the posterior pituitary gland and the anterior pituitary gland. Initially separate these glands join together during development of the embryo. 10-4. POSTERIOR PITUITARY GLAND The posterior pituitary gland is the portion which comes from and retains a direct connection with the base of the brain. The hormones of the posterior pituitary gland are actually produced in the hypothalamus of the brain. From the hypothalamus the hormones are delivered to the posterior pituitary gland where they are released into the bloodstream. At present we recognize two hormones of the posterior pituitary gland. a. ADH .