Our Lady of Fatima University
College of Pharmacy 2. Posterior Pituitary
Anatomy and Physiology
- also called “NEUROHYPOPHYSIS”
- does not have any secretion
ENDOCRINE SYSTEM - derived from downgrowth of nervous tissue from
Hypothalamus (master gland) releases hormones towards the hypothalamus to which it remains joined by
the pituitary gland and the pituitary gland will release the the pituitary stalk
stimulating hormone to the thyroid, medulla, testis, ovary,
and pancreas (Islets of Langerhans) Explanation: hypothalamus will have secretion and then
will store it in the posterior lobe and will also give
releasing hormones to the anterior pituitary gland and
Exocrine glands from there, it will release stimulating hormones
- have ducts
(e.g., salivary glands, gastric glands, intestinal glands)
Endocrine glands
Hormones secreted by anterior pituitary
-do NOT have ducts “ductless”
- are responsible for the synthesis and secretion of chemical - comes from “CHROMOPHILS” which is the main cells
messenger known as “HORMONES” which are dessiminated of anterior pituitary which is divided into basophilic and
throughout the body via the bloodstream where they act on acidophilic
specific target organs.
1. Growth Hormones
2. Thyroid Stimulating Hormone
3. Gonadrothophic (follicles stimulating hormone and
I. PITUITARY GLAND
luteinizing hormone) - for testis and ovaries
- also known as “HYPOPHYSIS” or “HYPOPHYSIS
4. Prolactin - for milk production
CEREBRI”
5. ACTH (adrenocorticotrophic hormone) - stimulates
- a specialized appendage of the brain which secretes
adrenal gland
several hormones
6. MSH (melanocyte stimulating hormone) - stimulation of
- approximately 1cm, situated in the SELLA TURCICA of
melanocyte to form melanin which is found in the skin
the sphenoid and it is connected to the base of the
brain via the infundibulum or stalk
Hormones secreted by posterior pituitary
- cells in posterior pituitary are known as “PITUICYTES” which
DIVISIONS OF PITUITARY GLAND:
are modified neuroglial cells found in the pars nervosa
- the neurohypophysis does not synthesize hormones.
1. Anterior Pituitary
Instead stores and releases two hormones.
- also called the “ADENOHYPOPHYSIS”
- makes up 75% of the total weight of the gland
1. ADH (antidiuretic hormone or Vasopressin or Pitressin)
- arises as an epithelial outgrowth from the roof of
- produced by the cell bodies of the supraoptic
the primitive oral cavity known as the “RATHKE’S
nucleus
POUCH”
College of Pharmacy 2. Posterior Pituitary
Anatomy and Physiology
- also called “NEUROHYPOPHYSIS”
- does not have any secretion
ENDOCRINE SYSTEM - derived from downgrowth of nervous tissue from
Hypothalamus (master gland) releases hormones towards the hypothalamus to which it remains joined by
the pituitary gland and the pituitary gland will release the the pituitary stalk
stimulating hormone to the thyroid, medulla, testis, ovary,
and pancreas (Islets of Langerhans) Explanation: hypothalamus will have secretion and then
will store it in the posterior lobe and will also give
releasing hormones to the anterior pituitary gland and
Exocrine glands from there, it will release stimulating hormones
- have ducts
(e.g., salivary glands, gastric glands, intestinal glands)
Endocrine glands
Hormones secreted by anterior pituitary
-do NOT have ducts “ductless”
- are responsible for the synthesis and secretion of chemical - comes from “CHROMOPHILS” which is the main cells
messenger known as “HORMONES” which are dessiminated of anterior pituitary which is divided into basophilic and
throughout the body via the bloodstream where they act on acidophilic
specific target organs.
1. Growth Hormones
2. Thyroid Stimulating Hormone
3. Gonadrothophic (follicles stimulating hormone and
I. PITUITARY GLAND
luteinizing hormone) - for testis and ovaries
- also known as “HYPOPHYSIS” or “HYPOPHYSIS
4. Prolactin - for milk production
CEREBRI”
5. ACTH (adrenocorticotrophic hormone) - stimulates
- a specialized appendage of the brain which secretes
adrenal gland
several hormones
6. MSH (melanocyte stimulating hormone) - stimulation of
- approximately 1cm, situated in the SELLA TURCICA of
melanocyte to form melanin which is found in the skin
the sphenoid and it is connected to the base of the
brain via the infundibulum or stalk
Hormones secreted by posterior pituitary
- cells in posterior pituitary are known as “PITUICYTES” which
DIVISIONS OF PITUITARY GLAND:
are modified neuroglial cells found in the pars nervosa
- the neurohypophysis does not synthesize hormones.
1. Anterior Pituitary
Instead stores and releases two hormones.
- also called the “ADENOHYPOPHYSIS”
- makes up 75% of the total weight of the gland
1. ADH (antidiuretic hormone or Vasopressin or Pitressin)
- arises as an epithelial outgrowth from the roof of
- produced by the cell bodies of the supraoptic
the primitive oral cavity known as the “RATHKE’S
nucleus
POUCH”
