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

Excretory system, types of excretory system of lower animals

types of excretory system of lower animals

Metastasis - characteristics define cancer, Metastasis - Characteristics De...

Metastasis - Characteristics Define Cancer Metastasis is the capability of a malignant cell to detach itself from a tumor and establish a tumor in another site. This capabilit

How cleaning agents works, Q. How Cleaning agents works? Food particles...

Q. How Cleaning agents works? Food particles and other debris provide good nutrients for the nlicroorganisms to grow. In fact, the food particles protect microorganisms d

Heart, which part of human body purify the blood

which part of human body purify the blood

What happens when the ovum is fertilized, What happens when the ovum is fer...

What happens when the ovum is fertilized? If the ovum is fertilized, there is no breakdown of endometrium and no menstrual flow. The fertilized ovum travels through uterine tub

Concept of production - ecosystems, Concept of Production - Ecosystems ...

Concept of Production - Ecosystems The ecosystems are unable to function, unless there is a constant input of energy from an external source that is sun. Solar energy enters t

Explain skin changes during kwashiorkor, Explain Skin changes During Kwashi...

Explain Skin changes During Kwashiorkor? In many cases, dermatosis (changes in skin) is seen. Such changes are common in areas of friction. Dark pigmented patches, akin to sun-

What is tubal pregnancy, Q. What is tubal pregnancy? Many times fecunda...

Q. What is tubal pregnancy? Many times fecundation takes place in the Fallopian tubes in general the newly formed zygote is taken to the uterus where nidation and the embryonic

Why are vaccines used in the prevention, Q. Why are vaccines used in the pr...

Q. Why are vaccines used in the prevention but not in the treatment of infections? Why can antivenom serums be used in prevention and treatment? Vaccines are not used in the tr

Clostridium botulinum, Clostridium botulinum is an anaerobic, Gram-positive...

Clostridium botulinum is an anaerobic, Gram-positive, spore forming, rod shaped bacteria that produces the potent neurotoxin. The organism and its spores are widely distributed in

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