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

Taxonomy, A In taxonomy, what is a "KEY" ? List the different types of key...

A In taxonomy, what is a "KEY" ? List the different types of keys. How are they prepared and what are they used for ?sk question #Minimum 100 words accepted#

Animals vs plants, Animals vs Plants Organisms are of two main types an...

Animals vs Plants Organisms are of two main types animals and plants, although all the above mentioned Unifying concepts of Biology apply equally to both animals and plants, ye

Explain the major classes of lipids, Explain the major classes of lipids ...

Explain the major classes of lipids The major classes of lipids are simple lipids (acylglycerols and waxes); Compound lipids (glycerophospholipids); Derived lipids (compounds t

Show Relation between tissue and the implant material, Relation between Tis...

Relation between Tissue and the implant material The biologic interaction between the tissue and the implant material at an  interface may result in a variety of phenomena such

Protozoa, What are the disadvantages of protozoa

What are the disadvantages of protozoa

What is ecosystem, Question 1 Write a short note on the following         ...

Question 1 Write a short note on the following                       1 Angiosperms                       2 Meristematic tissue Question 2 What is ecosystem? List and explain

Elaborate the following term in detail - macronucleus, Elaborate the follow...

Elaborate the following term in detail - Macronucleus. One of two types of dimorphic nuclei found in ciliate protozoans. Macronucleus contains multiple copies of genome (polypl

Fruits why not glucose, Sucrose is commonly used to preserve fruits why not...

Sucrose is commonly used to preserve fruits why not glucose? Ans) Glucose is reactive due to its open-chain form having an aldehyde group.

Eyelids, EYELID S - 3 in number. Dermis is thinnest in it. Upper an...

EYELID S - 3 in number. Dermis is thinnest in it. Upper and lower eye lid with eye lashes. Upper eye lid is more motile In reptiles lower eye lid is more motile. In cycl

Scintigraphy or nuclear medicine, S c inti g r ap h y ...

S c inti g r ap h y or nuclear medicine: Scintigraphy was introduced in veterinary medicine in 1970s. It is highly sensitive and can detect bone dama

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