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ENDOCRINE SYSTEM AND THEIR CLASSIFICATIONS OF HORMONES
• GROUP MEMBERS:
• AISHA RAHIM
• AISHA TAUFIQUE BAWA
• ALEENA JAMEEL
• AAFREEN BADAR
BY: AISHA RAHIM
THE ENDOCRINE
SYSTEM
The word endocrine derives from the Greek words "endo,"
meaning within, and "crinis," meaning to secrete. In
general, a gland selects and removes materials from the
blood, processes them and secretes the finished chemical
product for use somewhere in the body. The endocrine
system affects almost every organ and cell in the body.
The endocrine system is the collection of glands that
produce hormones that regulate metabolism, growth and
development, tissue function, sexual function,
reproduction, sleep, and mood, among other things.
ORGANS
The endocrine system is made up of the pituitary gland,
thyroid gland, parathyroid glands, adrenal glands,
pancreas, ovaries (in females) and testicles (in males).
ENDOCRINE SYSTEM AND THEIR CLASSIFICATIONS OF HORMONES
• ADRENAL GANDS
• IT SECRETES ADRENALINE HORMONE WHEN THE
BODY IS UNDER STRESS.
• HYPOTHALAMUS
• IT CONTROLS HORMONE PRODUCTION BY
RELEASING DIFFERENT CHEMICALS TO PITUITARY
GLANDS.
• OVARIES
• PRODUCE ESTROGENS AND PROGESTERONE,
ALSO INVOLVE IN EGG-CELL PRODUCTION.
• PANCREAS
• IT SECRETES INSULIN.
• BY:AISHA TAUFIQUE BAWA
• HORMONES ARE CLASSIFIED AS:
1. STEROID HORMONES
2. PEPTIDE HORMONES
3. AMINE HORMONES
• Steroid hormones are derived
from cholesterol.
• The endocrine glands are
responsible for the production of
steroid hormones, the adrenal
gland, the ovary, and the testis,
commonly known as the gonads.
• Steroid hormones have a few
important functions in the body
including water balance, sexual
development and stress response.
• Many but not all steroids are
hormones, however, not all
steroids are hormones.
• Five classes of steroid hormones:
• 1. ANDROGENS
• 2. ESTROGENS
• 3. PROGESTINS
• 4. MINERALOCORTICOIDS
• 5. GLUCOCORTICOIDS
• Androgens- Promote male sex development and
maintain male sex characteristics.
• Estrogens-Promote female sex development.
• In plants, auxin is an example of a steroid hormone that
regulates longitudinal cell structure so as to allow
bending of the stalk or stem in phototrophic response.
• Glucocorticoids
• Glucocorticoids originate in the adrenal cortex and affect
mainly metabolism; decrease inflammation and increase
resistance to stress.
• Mineralocorticoids
• Mineralocorticoids originate in adrenal cortex and
maintain salt and water balance.
• Progestin
• Progestin originate from both ovaries and placenta, and
mediate menstrual cycle and maintain pregnancy.
• BY:ALEENA JAMEEL
• Polypeptide hormones, or simply
peptide hormones, are hormones
made up of amino acids that are
secreted by the endocrine system.
• Endocrine organs that secrete
peptide hormones include the
hypothalamus, pituitary gland,
thyroid gland, adrenals, ovaries,
endocrine pancreas, and adipose
tissues.
• Peptide hormones secreted by the
hypothalamus are generally named
releasing factors, and include
corticotropin-, gonadotropin-,
somatotropin-, and thyrotropin-
releasing factor.
• Those secreted by the anterior
pituitary include melanocyte-
stimulating hormone, follicle-
stimulating hormone, luteinizing
hormone, adrenocorticotropic
hormone (ACTH), thyrotropic
hormone, and growth hormone or
somatotropin.
• The posterior pituitary secretes
vasopressin and oxytocin.
• Other peptide hormones include
thyroxine from the thyroid gland,
cortisol from the adrenals, and
insulin from the pancreas.
• Peptide hormones are secreted by
the hypothalamus, located in the
limbic system.
• BY: Aafreen badar
• Derived from Tyrosine.
• The thyroid hormones are synthesized and stored in
the thyroid gland and incorporated into
macromolecules of the protein thyroglobulin, which is
stored in large follicles within the thyroid gland.
• Hormone secretion occurs when the amines are split
from thyroglobulin, and the free hormones are then
released into the blood stream.
• After entering the blood, most of the thyroid
hormones combine with plasma proteins, especially
thyroxine-binding globulin, which slowly releases the
hormones to the target tissues.
• Epinephrine and norepinephrine are formed in the
adrenal medulla.
• Catecholaminesare taken up into preformed vesicles
and stored until secreted.
• Similar to the protein hormones stored in secretory
granules, catecholamines are also released from
adrenal medullary cells by exocytosis.
• Once the catecholamines enter the circulation, they
can exist in the plasma in free form or in conjugation
with other substances.
• Endocrine disorders involve either too much or too little hormone
secretion.
• Disorders may result from a problem in the gland itself, or because
the hypothalamic-pituitary axis provides too much or too little
stimulation.
• Depending on the type of cell they originate in, tumors can produce
excess hormones or destroy normal glandular tissue, decreasing
hormone production.
• Sometimes the body's immune system attacks an endocrine gland,
decreasing hormone production.
• Doctors usually measure levels of hormones in the blood to tell how
an endocrine gland is functioning.
• Sometimes blood levels alone do not give enough information about
endocrine gland function, so doctors measure hormone levels after
giving a stimulus (such as a sugar-containing drink, a drug, or a
hormone that can trigger hormone release) or after having the patient
take an action (such as fasting).
ENDOCRINE SYSTEM AND THEIR CLASSIFICATIONS OF HORMONES
ENDOCRINE SYSTEM AND THEIR CLASSIFICATIONS OF HORMONES

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ENDOCRINE SYSTEM AND THEIR CLASSIFICATIONS OF HORMONES

  • 2. • GROUP MEMBERS: • AISHA RAHIM • AISHA TAUFIQUE BAWA • ALEENA JAMEEL • AAFREEN BADAR
  • 4. THE ENDOCRINE SYSTEM The word endocrine derives from the Greek words "endo," meaning within, and "crinis," meaning to secrete. In general, a gland selects and removes materials from the blood, processes them and secretes the finished chemical product for use somewhere in the body. The endocrine system affects almost every organ and cell in the body. The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things. ORGANS The endocrine system is made up of the pituitary gland, thyroid gland, parathyroid glands, adrenal glands, pancreas, ovaries (in females) and testicles (in males).
  • 6. • ADRENAL GANDS • IT SECRETES ADRENALINE HORMONE WHEN THE BODY IS UNDER STRESS. • HYPOTHALAMUS • IT CONTROLS HORMONE PRODUCTION BY RELEASING DIFFERENT CHEMICALS TO PITUITARY GLANDS. • OVARIES • PRODUCE ESTROGENS AND PROGESTERONE, ALSO INVOLVE IN EGG-CELL PRODUCTION. • PANCREAS • IT SECRETES INSULIN.
  • 8. • HORMONES ARE CLASSIFIED AS: 1. STEROID HORMONES 2. PEPTIDE HORMONES 3. AMINE HORMONES
  • 9. • Steroid hormones are derived from cholesterol. • The endocrine glands are responsible for the production of steroid hormones, the adrenal gland, the ovary, and the testis, commonly known as the gonads. • Steroid hormones have a few important functions in the body including water balance, sexual development and stress response. • Many but not all steroids are hormones, however, not all steroids are hormones.
  • 10. • Five classes of steroid hormones: • 1. ANDROGENS • 2. ESTROGENS • 3. PROGESTINS • 4. MINERALOCORTICOIDS • 5. GLUCOCORTICOIDS • Androgens- Promote male sex development and maintain male sex characteristics. • Estrogens-Promote female sex development. • In plants, auxin is an example of a steroid hormone that regulates longitudinal cell structure so as to allow bending of the stalk or stem in phototrophic response.
  • 11. • Glucocorticoids • Glucocorticoids originate in the adrenal cortex and affect mainly metabolism; decrease inflammation and increase resistance to stress. • Mineralocorticoids • Mineralocorticoids originate in adrenal cortex and maintain salt and water balance. • Progestin • Progestin originate from both ovaries and placenta, and mediate menstrual cycle and maintain pregnancy.
  • 13. • Polypeptide hormones, or simply peptide hormones, are hormones made up of amino acids that are secreted by the endocrine system. • Endocrine organs that secrete peptide hormones include the hypothalamus, pituitary gland, thyroid gland, adrenals, ovaries, endocrine pancreas, and adipose tissues. • Peptide hormones secreted by the hypothalamus are generally named releasing factors, and include corticotropin-, gonadotropin-, somatotropin-, and thyrotropin- releasing factor.
  • 14. • Those secreted by the anterior pituitary include melanocyte- stimulating hormone, follicle- stimulating hormone, luteinizing hormone, adrenocorticotropic hormone (ACTH), thyrotropic hormone, and growth hormone or somatotropin. • The posterior pituitary secretes vasopressin and oxytocin. • Other peptide hormones include thyroxine from the thyroid gland, cortisol from the adrenals, and insulin from the pancreas. • Peptide hormones are secreted by the hypothalamus, located in the limbic system.
  • 16. • Derived from Tyrosine. • The thyroid hormones are synthesized and stored in the thyroid gland and incorporated into macromolecules of the protein thyroglobulin, which is stored in large follicles within the thyroid gland. • Hormone secretion occurs when the amines are split from thyroglobulin, and the free hormones are then released into the blood stream. • After entering the blood, most of the thyroid hormones combine with plasma proteins, especially thyroxine-binding globulin, which slowly releases the hormones to the target tissues. • Epinephrine and norepinephrine are formed in the adrenal medulla. • Catecholaminesare taken up into preformed vesicles and stored until secreted. • Similar to the protein hormones stored in secretory granules, catecholamines are also released from adrenal medullary cells by exocytosis. • Once the catecholamines enter the circulation, they can exist in the plasma in free form or in conjugation with other substances.
  • 17. • Endocrine disorders involve either too much or too little hormone secretion. • Disorders may result from a problem in the gland itself, or because the hypothalamic-pituitary axis provides too much or too little stimulation. • Depending on the type of cell they originate in, tumors can produce excess hormones or destroy normal glandular tissue, decreasing hormone production. • Sometimes the body's immune system attacks an endocrine gland, decreasing hormone production. • Doctors usually measure levels of hormones in the blood to tell how an endocrine gland is functioning. • Sometimes blood levels alone do not give enough information about endocrine gland function, so doctors measure hormone levels after giving a stimulus (such as a sugar-containing drink, a drug, or a hormone that can trigger hormone release) or after having the patient take an action (such as fasting).