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

Regents for estimation of vitamin c - colorimetric method, Define Regents f...

Define Regents for Estimation of Vitamin C - Colorimetric Method? 1. 2, 4 dinitrophenylhydrazine reagent - Dissolve 2 g of dinitrophenyl hydrazine in 100 ml of 9N sulphuric aci

Destruction of microorganisms, Q. Destruction of microorganisms? Ans. ...

Q. Destruction of microorganisms? Ans. Destruction or control of growth of microorganisms is the basis of food preservation. To 'preserve' actually means fro keep safe, r

What do you understand by global warming, Q. What do you understand by glob...

Q. What do you understand by global warming? The Global warming is the increase in the temperature of the planet due to accumulation of some gases in the atmosphere, especially

Food spoilage bacteria - lactobacillus, Food Spoilage Bacteria - Lactobacil...

Food Spoilage Bacteria - Lactobacillus Different organisms of this group, also known as "lactic acid bacteria", have different properties but all of them produce lactic acid fro

Water adaptations, Water Adaptations After becoming familiar with the t...

Water Adaptations After becoming familiar with the two kinds of water stresses you would like to know about the adaptations in plants and animals which enable them to survive u

Define stress echocardiography with adenosine, Q. Define Stress Echocardiog...

Q. Define Stress Echocardiography with Adenosine? These have all been described. The information is that of wall motion abnormality indicating ischaemia. Ejection fraction can

Microorganisms, advantages and disadvantages of protozoa

advantages and disadvantages of protozoa

Hydrostatic skeleton, Hydrostatic Skeleton The functioning of the hyd...

Hydrostatic Skeleton The functioning of the hydrostatic skeleton in an animal depends upon the musculature being arranged around an enclosed volume of fluid. After that, cont

Is pollution always caused by humans, Q. Is pollution always caused by huma...

Q. Is pollution always caused by humans? In the most cases pollution is caused by human activity. Other species and some abiotic factors though can also pollute an ecosystem. F

Human impact on environment, questions and answers on human impacts on envi...

questions and answers on human impacts on environment

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