Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
CONTRACTILE CELLS
In addition to above mentioned three types of muscular tissue, there are contractile cells.
These are as follows.
1. Myoepithelial Cells (= Myoepitheliocytes). These cells are present in salivary glands, mammary glands and sweat glands. They form a sort of epithelium called myoepithelium. Myoepithelial cells contract to expel saliva, milk and sweat from the respective glands. Myopithelial cells are innervated by autonomic nerves. They resemble smooth muscle cells and are involuntary. These cells arise from the ectoderm instead of mesoderm.
2. Myofibroblasts. These cells resemble fibroblasts but contain actin and myosin arranged as in smooth muscle and are contractile. In fact myofibroblasts are specialised contractile fibroblasts. The contraction of wounds is caused by the shortening of myofibroblasts.
3. Pericytes. These cells are found around capillaries and venules. They contain actin and myosin. Pericytes can give rise to myofibroblasts and to mesenchymal tissue which can differentiate into fibroblasts and can form new blood vessels.
S a f e ty, ethical and welfare considerations Development of transgenic organisms is proceeding in an environment of intense public debate about safety, environmental impa
How might stem cells and other tools of "regenerative medicine" be used to treat brain diseases? Fuelled by the hope which stem cells may have the capacity to rebuild virtually
Define the meaning of value - Soil Value refers to relative lightness or darkness of a colour and is a measure of the amount of light that reaches the eye under standard lighti
Importance of care in children Children are not just small adults. This is important to keep in mind when evaluating how children react to illness, perceive an illness, o
INTRODUCTIO N - Endocrinolog y - Study of endocrine glands, hormones and their effects. Thomas Addison - Father of endocrinology. Described hormonal disease in 1855 kn
Nitrification - Nutrient Cycles Ammonia or ammonium salts, are converted into nitrate in a process termed nitrification to be useful to most autotrophic and heterotrophic orga
Define Intermediary Metabolites of an Athletes? Coenzyme Q10 - for the physically active; Co-Q 10 activates cell energy. While you carry out any physical act; run, jump, throw,
Production of Industrial Compounds Cultured plant cells retain their metabolic potential and synthesise secondary products of commerce. Cell cultures can also be used as facto
Q What do protozoans "eat"? Do they move in search for food? Protozoans are heterotroph beings that are they do not make their own food and thus they need to search for it in t
describe the cell theory and its exception
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd