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

Free-radical addition reaction, Why is the reaction of ethane and chlorine ...

Why is the reaction of ethane and chlorine not a free-radical addition reaction? Because no free radicals are include in the reaction process only carbo cations and Cl- are evo

Defina about the lipid metabolism, Defina about the Lipid Metabolism? A...

Defina about the Lipid Metabolism? Animal studies consistently show a hypotriglyceridenlic effect although equivocal results have been seen with healthy humans. Hypotriglycerid

What are the symptoms of dyslipidemia, Q. What are the Symptoms of dyslipid...

Q. What are the Symptoms of dyslipidemia? The main symptom is presence of xanthoma: This is a yellowish swelling, nodule or plaque in the skin resulting from deposits of fat. T

Parasternal position, Examination is begun by placing the transducer in l...

Examination is begun by placing the transducer in left parasternal region, usually in the third or fourth left intercostal space. From this position, a sector image of the heart

What is bathing in cerebro-spinal fluid, Q. What is bathing in Cerebro-Spin...

Q. What is bathing in Cerebro-Spinal Fluid? The CNS is bathing in Cerebro-Spinal Fluid (or CSF):  similar to plasma, less protein, rich in ascorbic acid, different in ions Na+

Are nematodes triploblastic or diploblastic animals, Q. Are nematodes tripl...

Q. Are nematodes triploblastic or diploblastic animals? Just like platyhelminthes, nematodes are triploblastics that is they present three germ layers (ectoderm, endoderm and m

Illustrate the composition of agar, Composition of agar Agar we learnt ...

Composition of agar Agar we learnt consists of a mixture of agrose and agropectin.  Agrose has a linear polymer structure  consisting of alternating D-galactose and 3,6-anhydro

What do you understand by pseudocoelomate?, What do you understand by Pseud...

What do you understand by Pseudocoelomate? Animals that have a body cavity which is not completely lined by mesoderm. In past these organisms were referred to as the phylum Asc

Explain chymotrypsin, Chymotrypsin Chymotrypsin  is secreted in an ina...

Chymotrypsin Chymotrypsin  is secreted in an inactive form  'chymotrypsinogen',  which  is activated by  trypsin. Chymotrypsin  is specific  for  peptide  bonds containing unc

Describe the recovery process of an extracellular product, Question 1: ...

Question 1: Describe the recovery process of an extracellular product through downstream processing. Different criteria's for the choice of recovery process Brief on

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