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

Minerals and reproduction, Minerals and reproduction The mechanism of mine...

Minerals and reproduction The mechanism of mineral-reproduction interactions is not fully understood because  of the complexity of neuro-hormonal dialogue. Some minerals act direc

Physical environment and genetics, Physical Environment and Genetic Phy...

Physical Environment and Genetic Physical Environment : Safe water and clean air, healthy workplace, safe houses, communication and roads all contribute to good health. The

Define serum vitamin a content, Define Serum Vitamin A Content? Assessm...

Define Serum Vitamin A Content? Assessment of serum vitamin A content is the most reliable criterion Tor assessing vitamin A status. Serum levels indicative of various degrees

Methods of prevention of flap tearing, Prevention of flap tearing Teari...

Prevention of flap tearing Tearing of a flap is a common complication of the inexperienced surgeon who attempts to perform a procedure using a flap that provides insufficient a

Classification, what is the kingdom,phylum,class,age of gastropoda

what is the kingdom,phylum,class,age of gastropoda

Similarities and differences between the two species, Compare the teeth of ...

Compare the teeth of Australopithecus afaensis and Homo sapiens. a)Describe the similarities and differences between the two species. b) Write a hypothesis about dietary difference

Define main gastric digestive enzyme, Q. Besides being fundamental for the ...

Q. Besides being fundamental for the activation of the main gastric digestive enzyme how does HCl also directly participate in digestion? With its corrosive effect HCl also hel

Skeletal muscle need an antagonistic partner, Why does each skeletal muscle...

Why does each skeletal muscle need an antagonistic partner? Because muscles can only contract and relax, each skeletal muscle requires an antagonistic partner to extend it afte

Advantage & disadvantage of using algae as source of protein, Define Advant...

Define Advantage & disadvantage of using Algae as source of protein? Advantage Produces proteins which have almost all the Essential Amino acids. Rich in tyrosine

Define criteria for assessment of vitamin d status, Define Criteria for Ass...

Define Criteria for Assessment of Vitamin D Status? You may recall the events involved in calcium homeostasis described earlier in this section. We studied that sufficient 25-O

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