Integumentary system - various glands, Biology

Assignment Help:

OTHER GLANDS -

(i) Mammary glands -

  1. Study of mammary gland is mastology. Modified sweat gland.
  2. 4-5 pairs in rabbit. 1 pair in human. In opposum 25 pairs (max.). Teats or nipples present.
  3. Teats absent in prototheria or monotremes. Gynecomestea condition present in prototheria.
  4. Lecticiferous tubules open on teats.
  5. In buffalo, cow, horse, mammary glands before open into teats first open in cisterni (cavity).
  6. In dog, goat, buffalo, pig mammary glands present in abdomen.
  7. These are compound alveolar tubular duct (active) or compound tubular (inactive).
  8. Apocrine in nature. It's activity & growth is under control of pituitary.
  9. By lectogenesis milk is synthesized under control of prolectin.
  10. Early milk is rich in minerals known as colustrum. Secretion of milk is under control of oxytocin.

(ii) Meibomian gland or meikomian gland or cilliary gland of moll or tarsal gland -

Present at corner of eye lids. Modified sebaceous gland. Their fatty secretion clears eye ball.

(iii) Ceruminuous gland or wax gland -

Present in external auditory meatus. Modified sweat gland.

It's secretion is wax or cerumen to protect ear drum.

(iv) Perineal gland or scent gland or inguinal gland -

Green in colour. Modified sweat gland. Situated in perineum. Their secretion attaracts opposite sex.

The smell is helpful to trace other groups in rabbit. Absent in human beings.

(v) Gland of zeis -

Modified sebaceus gland. Situated attached to eye lid. It's secretion clear eye ball.

Sty or hardoleum is due to its infection.

(vi) Tyson's gland -

Present in prepuce. Modified sweat gland. It's oily secretion is helpfull in copulation.

(vii) Gland of montgomery -

Modified sweat gland. Present in areola mammary. Its secretion softens the nipple.

Note :- Skin's glands absent in porpyaz (aquatic mammals).


Related Discussions:- Integumentary system - various glands

Prolactin, assignment on prolactin

assignment on prolactin

Animals and biomedical uses of biodiversity, Animal products too are widely...

Animal products too are widely used in medicines by traditional societies, and in some urbanized societies that believe in traditional animal-based remedies. Examples of such produ

Pyramid of biomass - ecological pyramids, Pyramid of Biomass - Ecological P...

Pyramid of Biomass - Ecological Pyramids The pyramid of numbers is not a very good method to use if the organisms at different trophic levels are of greatly differing sizes. T

Zoology, Classification of the Phylum Protozoa up to orders

Classification of the Phylum Protozoa up to orders

Show fruiting bodies present in a few fungi, Q What are the fruiting bodies...

Q What are the fruiting bodies present in a few fungi? Fruiting bodies are structures made of hyphae that project radially from the superior portion of the peduncle of a few fu

Explain emulsifying properties of proteins, Emulsifying properties of prote...

Emulsifying properties of proteins  Proteins are the surface-active substances, which are extensively used in the food industry as emulsifiers to manufacture products such as d

Define exocytosis , A cell frequently wants to secrete larger molecule...

A cell frequently wants to secrete larger molecules than can be accommodated through the transport systems dealt with in Topic E3. Exocytoses get to the movement of proteins out of

Define food components other than essential nutrients, Define Food Componen...

Define Food Components Other Than Essential Nutrients? In the previous units so far, we have read about the six major nutrients, which are essential for us. Though these vary i

Explain about diabetes mellitus, Q. Explain about Diabetes Mellitus? Di...

Q. Explain about Diabetes Mellitus? Diabetes Mellitus is a metabolic disorder characterized by chronic hyperglycemia (increased sugar) with disturbances of carbohydrates, fats

Crustose lichen stage - xerarch, Crustose Lichen Stage - Xerarch On ba...

Crustose Lichen Stage - Xerarch On bare rocks, conditions are inhospitable for life, as there is extreme deficiency of water and nutrients, great exposure to sun, and extremes

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd