Hormones (1)


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Hormones (1)

  1. 1. Hormones* Hormones are chemical messengers composed of proteins released into the blood by the endocrine glands in small amounts to a target organ with a specific function. They have homeostatic functions and have long lasting effects
  2. 2. Glands Digestive glands Endocrine glands Secretes juice or  Secretes a hormone enzymes  Glands are ductless Ducts/tubes present
  3. 3. Endocrine Glands are glands of the endocrine system that secrete their products, hormone s, directly into the blood rather than through a duct. The main endocrine glands include the pituitary gland, pancreas, o varies, testes, thyro id gland, and adrenal glands.
  4. 4. Pituitary gland Growth hormone (male/female) Follicle stimulating hormone (female) Luteinizing hormone (female) ADH (male/female) Oxytocin hormone (female)
  5. 5. Growth hormone For the growth of bones and muscles FSH Stimulates the fermentation of griffin follicle LHInduce ovulation or for the release of ovum to the oviduct or fallopian tube ADH For osmoregulation in kidney Oxytocin hormoneFor the contraction of uterine during labour and milk ejection during suckling
  6. 6. Follicle-Stimulating Hormone In men In womeno *FSH helps control the  , FSH helps control the production of sperm. menstrual cycle and the The amount of FSH in production of eggs by the men normally remains ovaries. The amount of constant. FSH varies throughout a womans menstrual cycle and is highest just before she releases an egg (ovulates)
  7. 7. Luteinizing Hormone In men In women stimulates the production  helps regulate the of testosterone, which menstrual cycle and plays a role in sperm ovulation. The level of LH production. in a womans body varies with the phase of the menstrual cycle. It increases rapidly just before ovulation occurs, about midway through the cycle
  8. 8. *It is produced by the pituitary gland*Oxytocin stimulates the concentration of smoothmuscle of the uterus during labour and facilitatesejection of milk from the breast during nursing
  9. 9. Ovary The primary female reproductive organs, or gonads, are the two ovaries. Each ovary is a solid, ovoid structureabout the size and shape of an almond, about 3.5 cm in length, 2 cmwide, and 1 cm thick. The ovaries are located in shallow depressions, called ovarian fossae, one oneach side of the uterus, in the lateral walls of the pelvic cavity. They are held loosely in place by peritoneal ligaments.
  10. 10. Ovary Progesterone Estrogen Secreted by an ovum-  Controls the released empty griffin development of follicle called corpus secondary sexual luteum to maintain the characteristics and thickening of uterus prepare the uterus to lining for the fertilized receive the fertilized egg egg
  11. 11. Testes Secretes a male hormone testosterone which promotes secondary sexual characteristics
  12. 12. Testosterone In men, testosterone plays a key role in the development of male reproductive tissues such as the testis as well as promoting secondary sexual characteristics such as increased muscle, bone mass and the growth of body-hair
  13. 13. Hormones in food industry Brovine growth  Synthetic derivatives hormone, of testosterone Estrogen derivatives called anabolic are given to cattle steroids and growth for increasing their hormone are given milk production to beef cattle to increase their meat production by reducing fats