May 12, 2021

Endocrine System Notes PDF

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Endocrine System Notes PDF- Hello Aspirants, welcome to our site Today, we are providing you human endocrine system Short notes PDF which helps you to understand this topic for competitive exams.

About Endocrine System:

The endocrine system is a biological system that consists of glands that work interdependently and produce hormones and enzymes into the body. Based on the way of secretion. There are three types of glands based on secretion, they are:

  • Exocrine glands
  • Endocrine glands
  • Mixed glands

Exocrine glands:

These glands secrete their secretion into a location or region of the body through a duct and their secretions are called enzymes mostly, while some are non-enzymes.

Example: Sweat Glands, Salivary Glands, Mammary Gland, Ceruminous Gland, Lacrimal Gland, Mucous Gland.

Endocrine glands:

These glands secrete their secretion into the blood flowing through them, so the secretion function at distant parts of the body from the gland.

Example: Pineal Gland, Pituitary Gland, Pancreas, Ovaries, Testes, Thyroid Gland, Parathyroid Gland, Hypothalamus, and Adrenal Glands.

Mixed glands:

A gland that functions as both exocrine glands and endocrine glands.

Example: Organs like the pancreas and liver secrete products i.e. Bile and Pancreatic Juice into the gastrointestinal tract through a series of ducts, and endocrine because they secrete other substances directly into the blood.

Glands & their Secretions:

• Pituitary (Hypophysis)
• Anterior (Adenohypophysis)
• Posterior (Neurohypophysis)
Base of the brain• Thyroid-stimulating hormone (TSH)
• Adrenocorticotropic hormone (ACTH)
• Gonadotropins
Follicle-stimulating hormone (FSH)
• Luteinizing hormone (LH)
• Growth hormone (GH)
• Prolactin, melanocyte-stimulating hormone (MSH)
• Antidiuretic hormone (ADH) Vasopressin
• Oxytocin
Thyroid glandAnterior to the trachea(Two lobes)• Thyroxine (T4)
• Triiodothyronine (T3)
Parathyroid glandLies on the dorsal surface of the thyroid gland
(4 glands – 2 pairs)
• Parathormone (PTH)
Adrenal glandsOn the top of each kidney (2sections -medulla is inner and 2 cortex surrounds medulla)• Cortex secretes corticosteroids (Glucocorticoids and Mineralocorticoids)
• Small amounts of androgen, estrogen, and progestin.
PancreasLeft of and behind the Stomach. (Exocrine and Endocrine gland)• Exocrine secretes digestive enzymes into the duodenum.
• Endocrine has cell clusters called Islet of Langerhans.
• Alpha islet cells produce glucagons.
Beta cells secrete insulin.
Pineal GlandNear the center of the brain between the left and right hemisphere.• Produces Melatonin
Thymus GlandBeneath the breast- bone near the heart.• Produces T cells (Thymus-Derived Cells)
LiverIn the abdominal cavity beneath the diaphragm, and above the stomach, right kidney, and in- testiness.• Largest gland in the human body.
• Secretes Bile.

In short, we will say that this topic is very interesting because in this topic we learn about the function of glands in our body. Therefore, we will be providing you human endocrine system notes PDF by that you can easily understand this topic.

Interested Candidates can download Biology Endocrine System Notes PDF from the below available link.


Endocrine System Notes PDF – Download Here

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