Tag: endocrine system and hormone

Hormones are secreted by the endocrine system. Endocrine glands do not have ducts. Their secretions (hormones) are secreted into the bloodstream. Discrete endocrine glands - these include the pituitary (hypophysis), thyroid, parathyroid, adrenal and pineal glands. Endocrine component of glands with both an endocrine and an exocrine function- these include the kidney, pancreas and gonads. 

Endocrine glands release hormones (chemical messengers) into the bloodstream to be transported to various organs and tissues throughout the body.

The gland is an endocrine gland as it released many hormones which travels to the target site cells through blood. Adrenal gland and thyroid gland are endocrine glands.

Endocrine glands are the glands of the endocrine system of our body that secretes their hormones, products, directly into the blood. Pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands are the major endocrine glands. In contrast to these glands, some glands release their hormones with the help of a duct onto the epithelial surface and are called endocrine glands. Some of these are sweat gland, mammary gland, lacrimal gland, salivary gland, sebaceous gland, mucous gland etc. 

Hormones are used to communicate between organs and tissues to regulate physiological and behavioral activities, such as digestion, metabolism, respiration, tissue function, sensory perception, sleep, excretion, lactation, stress, growth and development, movement, reproduction, and mood.

A steroid hormone is a steroid that acts as a hormone. Steroid hormones can be grouped into two classes : Corticosteroids and sex steroids. Within those two classes are the five types according to the receptors to which they bind : glucocorticoid,  mineralocorticoids, androgens, estorgens and progesterone. 

Endocrine glands release hormones directly into the blood for transportation to the effector organ. The effector organ can also be called as a target organ. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.

Ulna projects beyond the radius as an oleander process which has a deep sub terminal sigmoid notch for articulation with the distal end of humerus.

Adenohypophysis is not under direct regulation of the hypothalamus. Neurohypophysis is under direct regulation of the hypothalamus.

(A) Goiter is the enlargement of the thyroid gland. A goiter is associated with the thyroid which is not functioning properly.