Introduction to
Psychology
Endocrine System
Defination
 The Endocrine System is made of glands
and tissues that secrete hormones.
 The Endocrine System is a set of ...
 Controls many body functions
 Exerts control by releasing special chemical
substances into the blood called hormones.
...
Glands of Endocrine System
Following glands are included in
endocrine system :
 Pituitary Gland
 Thyroid Gland
 Parathy...
Pituitary Gland
 Located at the base of brain and
connected to the hypothalamus
 Divided into interior and posterior lob...
Hormones of the Pituitary Gland
 Divided into two lobes
 Anterior pituitary lobe is larger and produces
seven hormones.
...
Anterior pituitary
 The anterior pituitary synthesizes and
secretes the following important
hormones under the influence ...
Posterior pituitary
 Posterior pituitary releases the following
hormones
◦ Oxytocin hormone
◦ Antidiuretic hormone (ADH)
Thyroid and Parathyroid Glands
 Thyroid Glands
Locted in the anterior part of neck
It is butterfly shape organ and is
c...
Thyroid and Parathyroid Glands
 Parathyroid Glands
 They are small endocrine glands in the neck
that produce parathyroid...
Thymus Gland
 The thymus gland is both an endocrine
gland and lymphatic organ.
 The thymus secretes a large number of
ho...
Structure of thymus
 Structure of the thymus can be divided
into two parts
 Medulla
 Peripheral cortex
 The cortex and...
Adrenal Glands
 Adrenal glands are situated just above the
kidneys one on each side.
 These are triangular shaped glands...
Adrenal Glands
 Two adrenal glands located at the top of
each kidney; each has two parts
Cortex – secretes 3 groups cort...
Pancreas Gland
 Located behind stomach
 Pancreas is a dual function gland i.e.
endocrine or exocrine gland
 Function as...
Pineal Gland
 Attached to the third ventricle of the
brain
 Produces the hormone melatonin
• Amount of light effects the...
Gonad Gland
 Gonads – sex organs
Ovaries – female sex organ
• Ova
• Estrogen and progesterone
Testes – male sex organ
•...
Introduction to psychology
Introduction to psychology
Introduction to psychology
Introduction to psychology
Introduction to psychology
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Endocrine System

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Introduction to psychology

  1. 1. Introduction to Psychology Endocrine System
  2. 2. Defination  The Endocrine System is made of glands and tissues that secrete hormones.  The Endocrine System is a set of glands that regulates the activities of certain organs by releasing their chemical products into blood stream.  These glands have no ducts or openings
  3. 3.  Controls many body functions  Exerts control by releasing special chemical substances into the blood called hormones.  Hormones effects other endocrine glands or body systems.
  4. 4. Glands of Endocrine System Following glands are included in endocrine system :  Pituitary Gland  Thyroid Gland  Parathyroid Gland  Thymus Gland  Adrenal Gland  Pancreas Gland  Pineal Gland  Gonad Gland
  5. 5. Pituitary Gland  Located at the base of brain and connected to the hypothalamus  Divided into interior and posterior lobes  Known as the master gland because of its major influence in body’s activities
  6. 6. Hormones of the Pituitary Gland  Divided into two lobes  Anterior pituitary lobe is larger and produces seven hormones.  Posterior pituitary lobe is smaller and consist primarily of nerve fibers and neuroglial cells.
  7. 7. Anterior pituitary  The anterior pituitary synthesizes and secretes the following important hormones under the influence of hypothalamus ◦ Adrenocorticotropic hormone (ACTH) ◦ Thyrotropin or thyroid stimulating hormone ◦ Prolactin hormone ◦ Growth hormone ◦ Gonadotropin hormone
  8. 8. Posterior pituitary  Posterior pituitary releases the following hormones ◦ Oxytocin hormone ◦ Antidiuretic hormone (ADH)
  9. 9. Thyroid and Parathyroid Glands  Thyroid Glands Locted in the anterior part of neck It is butterfly shape organ and is composed of two con-like lobes or wings Secretes three hormones  Thyroxine  Triiodthyronine  Calcitonin
  10. 10. Thyroid and Parathyroid Glands  Parathyroid Glands  They are small endocrine glands in the neck that produce parathyroid hormone.  Humans have four parathyroid glands, which are located behind the thyroid gland.  Parathyroid glands control the amount of calcium in the blood and within the bones  It serves a completely different role than the thyroid gland.
  11. 11. Thymus Gland  The thymus gland is both an endocrine gland and lymphatic organ.  The thymus secretes a large number of hormones  It is composed of two lobes and is located in front of the heart and behind the sternum.  Thymus is specialized organ in the immune system.
  12. 12. Structure of thymus  Structure of the thymus can be divided into two parts  Medulla  Peripheral cortex  The cortex and medulla play different roles in the development ofT-cells.
  13. 13. Adrenal Glands  Adrenal glands are situated just above the kidneys one on each side.  These are triangular shaped glands.  They are chiefly responsible for releasing hormones which are extremely important to neural functioning and to the ability of the body to cope with stress.
  14. 14. Adrenal Glands  Two adrenal glands located at the top of each kidney; each has two parts Cortex – secretes 3 groups corticoids • Mineralocorticoids • Glucocorticoids • Sex hormones Medulla – secretes • Epinephrine / adrenaline • Nor – epinephrine / nor adrenaline
  15. 15. Pancreas Gland  Located behind stomach  Pancreas is a dual function gland i.e. endocrine or exocrine gland  Function as : • Exocrine gland oSecretes pancreatic juices into small intestine to become digestive juices • Endocrine gland oProduces insulin and diabetes.
  16. 16. Pineal Gland  Attached to the third ventricle of the brain  Produces the hormone melatonin • Amount of light effects the amount of melatonin secreted • Causes body temprature to drop
  17. 17. Gonad Gland  Gonads – sex organs Ovaries – female sex organ • Ova • Estrogen and progesterone Testes – male sex organ • Sperm • testosterone
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