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

Define that dna is the genetic material, How did Alfred Hershey and Martha ...

How did Alfred Hershey and Martha chase arrive at the conclusion that DNA is the Genetic material?

What type of colour blindness is most common in men, What type of colour bl...

What type of colour blindness is most common in men? Red-green colour blindness is the most regular form of colour blindness in men.

Procaryotes to eucaryotes, PROCARYOTES TO EUCARYOTES Procaryotes are th...

PROCARYOTES TO EUCARYOTES Procaryotes are the simple, unicellular organisms which do not have well defined nucleus, whereas eucaryotes are the complex;multicellular organisms w

How can you describe the homeostasis, Q. What is the homeostasis? What are ...

Q. What is the homeostasis? What are the sensors, effectors and controllers of homeostasis? Homeostasis comprises the processes by which the organism maintains extracellular an

Explain about periimplant probing depth, Periimplant Probing Depth In c...

Periimplant Probing Depth In contrast to natural teeth, for which the average periodontal probing depth (PD) has been reported, the physiologic depth of the periimplant sulcus

What is a pigment, What is a pigment?  Scientifically, a chemical that ...

What is a pigment?  Scientifically, a chemical that can impart colour and is insoluble in the solvent in which it is used, is referred to as a 'pigment'. Well, you would agree

.Botany, 57. While planning for an artificial hybridisation programme invol...

57. While planning for an artificial hybridisation programme involving dioecious plants, which of the following steps will be irrelevant A usting of pollen on stigma B Collection

Social Determinants of Health, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Nutrition in animals, filter feeding mode of nutrition is observed in- a) a...

filter feeding mode of nutrition is observed in- a) amoeba b) euglena c)paramoecium d) all of the above

Nutrition support in elderly - parenteral, Define Nutrition Support in elde...

Define Nutrition Support in elderly - Parenteral, Enteral and Oral? Under nutrition either due to dietary deficit a due to a medical complication may arise in the elderly. The

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