15 Types of Glands in Human Body & their Functions

Glands are studied as a part of human anatomy and physiology.

They are sac-like tissue structures in the body which play a vital role in the physiology and homeostasis.

Anatomically they are made of secretory cells and also situated in a safe yet prominent location inside the body.

Glands are quite numerous and regulate different physiological functions and activities.

The glands can be differentiated based on their locations, based on their type of secretions, based on the organ systems they control, etc.

These glands mostly perform their function through the release of secretions. These secretions can be hormones, enzymes and sometimes just fluid yet all of them have some essential functions.

Without their secretions, there can arise enzyme and hormone deficiency diseases.

Different Types of Glands in the human body:

Based on the way of secretion: Glands are two types based on secretion as

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

Types of exocrine glands and their secretions include

  • Salivary gland: In the buccal cavity secrete saliva. This saliva has many functions.
  • Pancreas: Secretes enzyme amylase, trypsin, and lipase. These enzymes digest carbohydrates, proteins, and fats respectively.
  • Sperm: Sperms produce Hyaluronidase enzyme by which they swim in the uterine tissue to reach ova. The other application of this enzyme is to help the drug reach inner most tissues of the body.
  • Sweat glands: secrete sweat which acts to regulate body temperature and also excretion.
  • Sebaceous gland: secrete sebum in the skin and the ear.
  • Lachrymal glands: In eye secrete water to moisten the eye.Types of Glands

2. Endocrine glands: Secrete into blood flowing through them, to let the secretion function at distant parts of the body from the gland. They are ductless glands. Their secretions are called as hormones.

They are classified under an endocrine system of the 12 body systems.

Based on their location there are broadly two types of endocrine glands viz.

a) Pituitary Gland (of the hypothalamus): This is a gland located below the hypothalamus in the brain.

For more about anatomy refer to the pituitary structure.

The gland is differentiated as anterior and posterior gland and has definite secretions for each type i.e.

i) Anterior pituitary gland: Located in the front part of the pituitary

  • Prolactin: Stimulates milk production in mothers.
  • Somatotrophin: A hormone which regulates the growth of the body and tissues.
  • Luteinizing hormone: Stimulates ovulation (egg formation) in females and testosterone production in males.
  • Thyroid stimulating hormone: Stimulates thyroid gland to produce T3 & T4 hormones.
  • Adrenocorticotrophic hormone: Stimulates secretion of glucocorticoids and mineralocorticoid hormones.
  • Follicle stimulating hormone signals formation of estrogen and progesterone by the female reproductive system.
gwc.maricopa.edu

ii. Posterior pituitary Present behind the front part of pituitary as shown in the diagram above.

  • Vasopressin (anti-diuretic hormone) It controls water loss from kidneys. So minimizes urine formation and saves water in the body.
  • Oxytocin It signals uterus for delivery in pregnant women after the period of gestation. It also stimulates milk secretion in mother.

b) Thyroid gland: Produces thyroid hormones T3 & T4.

Credit: Adam-endocrinesurgery.ucla.edu

c) Parathyroid gland: Produces parathormone.

Both thyroid and parathyroid glands are examples for types of glands in the neck.

d) Adrenal gland: located on the two kidneys. It has an outer cortex and inner medulla regions.

credit;estrellamountain.edu
  1. Cortex: secretes glucocorticoids and mineralocorticoids.
  2. Medulla: secretes nor-adrenalin. This is one of the neurotransmitters and is called a flight or fight hormone.

e) Pancreas: Pancreatic gland has both exocrine and endocrine functions. It secretes multiple hormones which control body glucose metabolism. Its endocrine function release secretions like insulin, glucagon, somatostatin.

f) Kidneys: produce Renin-angiotensin (controls blood pressure).

g) Pineal gland: Located inside the brain and called as natural body clock. One can see jet-lag effects due to its secretions. Melatonin (sleep hormone).

You may also like………> Hormones in the human body.

Sex hormones

h) Testes: Secrete Testosterone. Produced only in males to a large extent and to a minimum extent in women. It signals male characters like the beard, heavy muscles, etc.

i) ovaries: Produce Estrogen, progesterone. Secreted only in women and regulate reproduction cycle.

Reference: Principles of Anatomy and Physiology by Gerard J. Tortora

All the glands are located in distinct locations in the human body. They regulate the physiology to a large extent by receiving stimulus from the brain.  So we can notice that those glands present in the brain secrete hormones which go outside the brain and act on other glands distributed in different parts of the body. They travel through the blood to the target organs after being released.

64 thoughts on “15 Types of Glands in Human Body & their Functions”

  1. extremely helpful following a pituitary apoplexy which occurs in six people in 100,000 of the population. the info helps me with writing a book on the apoplexy
    which left me in a dark place for four weeks before I recovered. it was as though someone had taken an eraser a rubbed out four weeks of my life.

  2. Exocrine glands have a duct which carry the secretion to the desired place of action.Like pancreas secretes it digestive enzymes into intestine for digestion and nowhere else. While the endocrine part of it secretes hormones like insulin within itself which is carried away by blood to reach each and every part of the body for its action.

  3. What type of glands are in the roof of our mouths?
    This is a quiz question but I cannot find the answer

  4. @Ruben! Thyroid problem will be long standing if it immune related disorder. For better healing, it is good to have stress free life, physical activity and also good nutrition besides medication.

  5. Thanks for so much information about glands,i am also a patient of thyroid gland and i am following the medical advise of the physician. It takes a lot of time with healing.
    I need some advise for quick healing.

  6. Wonderful website you have here but I was curious if you knew of any
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    I’d really like to be a part of online community where I can get
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  7. this is such a meaningful and useful information which guide us to our assignment,test even an exam…..thank’s for it!!!

  8. Thank you so much for giving us the information about the glands in our body. It is such nice & helpful information. Hope that you will also give more information to us…

  9. Excellent description of the endocrine glands and their functions. It really is helping me to learn they’re basic functions. Thanks for posting and helping to spread the knowledge that can help people learn how to heal themselves.

  10. with out the endocrine and exocrine gland 2more glands available in the body any one tell me about that

  11. Too good very useful for me. It helps me to complete my project on time.
    THANK YOUUUUUUUU.
    LOVE IT!!!!!!!!!!!!!!!!!

  12. well, its good information but i want to know when they form in human body and when they start functioning

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