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 biomaterial and an implant and state, Q. Define biomaterial and an i...

Q. Define biomaterial and an implant and state? a) Biologically compatibility: an ideal implant material will elicit mainly physiological reactions within the surrounding tissu

Why does the ingestion of alcohol increase diuresis, Q. Why does the ingest...

Q. Why does the ingestion of alcohol increase diuresis? Alcohol inhibits the secretion of ADH that is antidiuretic hormone by the pituitary that is why when it is drunk to exce

.excretion, name the blood vessel which bring waste product to kidney

name the blood vessel which bring waste product to kidney

Endosperm with micropylar and chalazal haustoria, Endosperm with Micropylar...

Endosperm with Micropylar and Chalazal Haustoria Some plants develop haustoria from both micropylar and chalazal ends of endosperm. In Nemophila aggressive haustoria arise fr

How does caffeine effect plant growth, How does caffeine effect plant growt...

How does caffeine effect plant growth? Minerals like potassium are often found alongside caffeine when it happens in plant sources like coffee beans, and that could help the pl

Explain about vitamin E, Vitamin E (DL-α-Tocopherol) DL-α-Tocopherol is...

Vitamin E (DL-α-Tocopherol) DL-α-Tocopherol is a yellow to red-brown,  clear, viscous oil almost without odour which decolourise when exposed to light and air. DL-α-Tocopherol

Define advantages of blanching, Define Advantages of Blanching? Blanch...

Define Advantages of Blanching? Blanching as a pre-treatment before drying has the following advantages: 1. It helps in cleaning the material and reducing the amount

Female accessory sex organs, Normal 0 false false false ...

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

Agro industrial-non-edible and other minor oilseed cakes, NON-EDIBLE AND OT...

NON-EDIBLE AND OTHER MINOR OILSEED CAKES Besides the annually cultivated oilseed crops namely, groundnut, sesame, mustard, linseed, coconut, cotton, sunflower and safflower, I

What is pinocytosis, Pinocytosis: - The  ingestion of dissolved materials  ...

Pinocytosis: - The  ingestion of dissolved materials  by  endocytosis.  The cytoplasmic membrane invaginates and pinches off placing small  droplets of fluid  in  a  pinocytic vesi

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