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

What is a single cell protein, What is a single cell protein? The prote...

What is a single cell protein? The proteins obtained from microbial sources, i.e. algae, fungi, bacteria, yeast etc. are referred to as Single Cell Proteins. These are isolated

Define significance of plants and animals on human life, Define Significanc...

Define Significance and Impact of Plants and Animals on Human Life? Plants and animals both have a great significance and unparalleled impact on human life. Most of our needs a

Male reproductive system of frog, Male reproductive system of frog: i) ...

Male reproductive system of frog: i) Testis : a) There are a pair of testis which are attached to the kidneys. b) They are oval and yellow in colour. c) Inside the testis th

Define requirements of protein during surgery, Define Requirements of Prote...

Define Requirements of Protein during Surgery? Negative nitrogen balance is the most common nutritional deficiency related to surgery. Reserves of protein in the tissues and pl

Will sedantary lifestyle increased risk for cad, Q. Will Sedantary Lifestyl...

Q. Will Sedantary Lifestyle increased risk for CAD? A sedantary life style is associated with increased risk for CAD. Sedentary persons have almost double the risk for CAD deat

Enumerate the term - clinical neuroscience, Enumerate the term - Clinical n...

Enumerate the term - Clinical neuroscience Clinical neuroscience concerns the study of clinical populations both to well understand neuroanatomy and to test psychological theor

Fungal enzymes, Hello, I''m doing a...

Hello, I''m doing an assignment on characteristics and types of fungal enzymes and have also been requested to describe their assay.My libra

Which cells is the nervous tissue constituted, Q. Of which cells is the ner...

Q. Of which cells is the nervous tissue constituted? How is the generic function of this tissue related to the characteristics of the main cell type that forms it? The nervous

Describe atg or aug, ATG or AUG: The codon for the methionine; the transla...

ATG or AUG: The codon for the methionine; the translation initiation codon. generally, protein translation can only start at the methionine codon (although this codon might be fou

What are the common congenital heart disease, Q. What are the Common congen...

Q. What are the Common congenital heart disease? Fossa Ovalis ASD Commonest defect is fossa ovalis ASD. It can be closed by devices. ASD should be sized in various views

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