The processes of the hair cells are bathed in endolymph, whereas their bases are bathed in perilymph, this arrangement is necessary for the normal production of

receptor potentials

TLS Online TPP Program

#Id: 1410

#Unit 4. Cell Communication and Cell Signaling

Smooth muscle cells and nonmuscle cells are regulated by: Norepinephrine, angiotensin, endothelin, histamine

TLS Online TPP Program

#Id: 1411

#Unit 4. Cell Communication and Cell Signaling

Smooth muscle contraction is regulated by the cycling of myosin II between on and off states.

     OR

Smooth muscle contraction is regulated by myosin regulatory light chain associated with the myosin II neck domain.

TLS Online TPP Program

#Id: 1412

#Unit 4. Cell Communication and Cell Signaling

In vertebrate smooth muscle, phosphorylation of the myosin regulatory light chain activates contraction in Ca2+ dependent manner.

TLS Online TPP Program

#Id: 1413

#Unit 4. Cell Communication and Cell Signaling

When the Ca2+ level rises, Ca2+ binds CaM.

TLS Online TPP Program

#Id: 1414

#Unit 4. Cell Communication and Cell Signaling

The CaM*-Ca2+ complex binds and activates MLC kinase, phosphorylates the myosin LC. 

TLS Online TPP Program

#Id: 1415

#Unit 4. Cell Communication and Cell Signaling

The CaM*-Ca2+ complex binds and activates MLC kinase, phosphorylates the myosin LC.