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.

Posted Date: 10/1/2012 4:39:43 AM | Location : United States

Ask an Expert

Related Discussions:- Integumentary system - glands, Assignment Help, Ask Question on Integumentary system - glands, Get Answer, Expert's Help, Integumentary system - glands Discussions

Write discussion on Integumentary system - glands
Your posts are moderated

Write your message here..

Related Questions

Structure and function of lipoproteins, Triacylglycerols, cholesterol and p... Triacylglycerols, cholesterol and phospholipids are associatively insoluble in aqueous solution. Thus, they are transported around the body in the blood as parts of lipoproteins.

Explain about microwave irradiation, Q. Explain about Microwave irradiation... Q. Explain about Microwave irradiation? Most micro-organisms are destroyed by the action of microwave of a frequency of about 2450 MHz and a wavelength of 12.24 cm. The water c

What is homogenization, What is homogenization Emulsions may also be st... What is homogenization Emulsions may also be stabilized by a process known as homogenization, in which the size of the dispersed fat globules is greatly reduced to more or less

Patterns & Mechanisms of Evolution, What types of individuals in a populati... What types of individuals in a population are represented by the two ends of a bell curve?

What are transcription process and the replication processes, Q What are th... Q What are the differences and similarities between the transcription process and the replication processes? A DNA polynucleotide chain serves up as a template in the replication (

Orbital shaker, How I can optimize shake flask culture? How I can optimize shake flask culture?

What are the intermediate hosts of plasmodium, What are the intermediate an... What are the intermediate and the definitive hosts of the plasmodium? In the life cycle of the plasmodium humans are the middle hosts (where asexual reproduction takes place) a

How antigen react against future infection by same agent, Q. How can an org... Q. How can an organism that once underwent contact with an antigen be immunized against future infections by the same agent? This phenomenon is called as immune memory when an

Define larval stage of taenia cystcercus, Define Larval Stage of Taenia Cys... Define Larval Stage of Taenia Cystcercus? The pork tapeworn (T: solium) and beef tapeworn (T : saginata , which are endoparasites of humans who are the final hosts

Bovine ephemeral fever, B o v i ne ephemeral fever Ephemeral fever ... B o v i ne ephemeral fever Ephemeral fever is commonly known as 'three-day sickness'. It affects mainly cattle and occasionally sheep in India. Causative agent is a mosquit