Integumentary system - glands, Biology

Assignment Help:

Glands -

1.      SEBACEOUS GLAND -

  1. Absent in palm and sole. Holocrine in nature.
  2. Branched, alveoli are present, sac like in appearance.
  3. Generally attached to follicle but in free form on lips, prepuce labia majoris and labia minoris.
  4. It's secretion is sebum, makes hair shinny & water proof.
  5. In sebum 7-Dehydroxy cholesterol present that react with sun rays to form Vit. D (calciferol).

 

2.      SWEAT GLAND OR SUDDORFFIC GLAND OR SERUS GLAND -

  1. It is long tube like, coiled, embeded in dermis, opens out side by pore.
  2. Each gland consists of secretory part & a duct.
  3. Secretory part is greatly coiled & surrounded by myoepithelial cells assists in expelling the sweat.
  4. It's secretion is sweat, it consists of 95% H O, 2% minerals & CO, 3% urea.
  5. Sweat is meant for temperature regulation or thermoregulation or homeostatis, under control of thyroxine & sympathetic nervous system.
  6. Nature is apocrine i.e. with secretion some cytoplasm come out.
  7. In sweat, saliva, tear, lysozyme present to kill bacteria.
  8. When body temperature rises the sweat glands release bradykinin which dilates b.v. to loss heat quickly.

Related Discussions:- Integumentary system - glands

Explain transposition with vsd with restricted pulmonary, Explain transposi...

Explain transposition with VSD with restricted pulmonary? Transposition of great arteries with VSD with restricted pulmonary blood flow: Restriction to pulmonary blood flow

Determine the enzymatic analysis in foods, Enzymatic analysis in foods: app...

Enzymatic analysis in foods: applications in food industry Did you know that the degree of bacterial contamination of foods or freshness of food, particularly, meat etc. can be

Find out surface area, If given this in this sequence to find surface area,...

If given this in this sequence to find surface area, 1 cm x 2 cm x 2 cm block, am I to assume it is written in LxWxH format? I actually think the length is 2 though and the width i

Chronic bronchitis, Chronic Bronchitis Chronic Bronchitis is defined ...

Chronic Bronchitis Chronic Bronchitis is defined clinically as hypersecretion of mucus and recurrent episode of productive cough for a period of 3 months per year at least tw

Explain karyotype - animal taxonomy, Explain Karyotype - Animal Taxonomy? ...

Explain Karyotype - Animal Taxonomy? In animals systematic, it is the karyotype, that is the chromosome number and structure which are used quite extensively either separately

What is a stream, What is a stream? A stream is a incessant series of by...

What is a stream? A stream is a incessant series of bytes that flow into or out of your program. Input and output from devices like the mouse, , disk, keyboard, screen, modem, a

Lymph, Why lymph is also called middle man of body

Why lymph is also called middle man of body

Deficiency diseases-sporadic exertional rhabdomyolysis, Sporadic exertiona...

Sporadic exertional  rhabdomyolysis (azoturia, tying up in horses) Azoturia is a metabolic condition of horses that is characterized by reluctance to move and poor performance.

Define difference between plant systematic and taxonomy, Define Difference ...

Define Difference between Plant Systematic and Taxonomy? Before coming to principles of taxonomy let us discuss the difference between taxonomy and systematic. Systematic is th

Explain post-lyme disease syndrome, Explain Post-lyme disease syndrome  ...

Explain Post-lyme disease syndrome  Some treated patients whose objective manifestations of Lyme disease have resolved with antibiotic treatment report subjective symptoms suc

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