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

Regulation of glycogenesis, Regulation  of Glycogenesis Glycogen syntha...

Regulation  of Glycogenesis Glycogen synthase,  the key enzyme in glycogenesis, is activated by insulin and glucose and inhibited by CAMP.

Define measuring cylinder - nutritional biochemistry, Define Measuring cyli...

Define Measuring cylinder - Nutritional Biochemistry? It is used for measuring those reagents which need not be added in very accurate volumes. Strong acids and alkalis are add

Determine the psychological problems, Psychological Problems Failure to...

Psychological Problems Failure to fulfill the patient's expectations and failure to gain the patient's acceptance and satisfaction constitutes a psychological failure. It is hi

Explain intubation and ventilation, Explain Intubation and Ventilation ? ...

Explain Intubation and Ventilation ? If supplemental oxygen therapy or non-invasive ventilation do not help, the next step would be to intubate and commence mec

What is inflammatory bowel disease, Q. What is Inflammatory Bowel Disease? ...

Q. What is Inflammatory Bowel Disease? Inflammatory bowel disease is a general term used to refer to chronic inflammatory condition of the intestine. It is applied to three con

What are the cell types that form the phloem, What are the cell types that ...

What are the cell types that form the phloem? What are the main features of those cells? The major cells that form the phloem are the sieve elements and the companion cells. Th

Explain direct microscopic count - measurement of microbes, Explain Direct ...

Explain Direct Microscopic Count - Measurement of Microbes? The most obvious way to determine microbial number is through direct counting under a microscope. In this method, a

What are antioxidants, What are antioxidants? To put it simply, antioxi...

What are antioxidants? To put it simply, antioxidants are important naturally occurring nutrients, (vitamins, minerals) which help to protect body from certain types of cancers

Bacterial diseases-pigs, Pigs This is a sub-acute or chronic infection ...

Pigs This is a sub-acute or chronic infection manifested by abortion, sterility, high piglet mortality and orchitis in pigs. Br. suis causes brucellosis among pigs. It is morph

Use of nitrates and nitrites in microorganisms, Q. Explain the Use of nitra...

Q. Explain the Use of nitrates and nitrites in microorganisms? The use of nitrates and nitrites has been widely used in the curing of meat. The reduction of nitrates by bacteri

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