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!
The fundamental contractile unit is the sarcomere. Each muscle cell apart from the nucleus, mitochondria and other structures contains parallel fibrils. Sarcomere is a subunit of the fibril. It consists of parallel actin and myosin filaments. The thin actin filaments are attached to its limiting membrane or the Z line and interdigitates with the thicker myosin filaments which are placed centrally. The myosin filaments have flexible heads which can come into contact with the actin filaments. The filaments are propelled past each other by the repeated making and breaking of cross bridges between the actin and myosin filaments. In the resting state when the calcium level is low the myosin binding sites on the actin filament are blocked by tropomyosin which is a regulatory protein. This prevents cross bridge formation. When there is activation and a rise in calcium, the myosin actin binding sites are exposed. The energy required for the cross bridge recycling is provided by adenosine tripshophate (ATP). The number of cross bridges depends on the available calcium molecules. The greater the number of bridges, the more forceful the resulting contraction. During systole there is a 50 fold increase in intracellular calcium concentration.
chracters
SUBERIN It is a lipid formed by esterification of phellonic acid or its derivative with glycerol. Suberin occurs in the walls of cork cells and endodermal cells. It makes
What are the specialized structures that help the adhesion between cells? The structures responsible for the union of the epithelial cells are known as cell junctions. The main
Types of individuals in Cnidaria There are two forms of individuals in Cnidaria: Polyp Medusa Polyp is tubular, the oral end being free carrying
Q. What are the epithelial tissues? What is their general function and how is that function associated to the features of the tissue? Epithelial tissues also called as epitheli
PSYCHOLOGICAL DISORDERS - 1 . Anxiety Disorders 2 . Obsessive compulsive disorders 3. Attention deficit disorder 4 . Mood disorders
Q. What are diseases of the connective tissue? What are some of them? Diseases of the connective tissue are acquired or hereditary diseases numerous of autoimmune cause charact
The cell cycle is controlled by a cyclically operating set of reaction sequences that both trigger and coordinate key events in the cell cycle • The cell-cycle control system is
discovery of two light phase in photosynthesis
Identify the hormones produced by the anterior and posterior lobes of the pituitary gland and specify the functions of those hormones.
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