What is physiologic adaptation, Biology

Assignment Help:

Physiologic Adaptation

Modeling is a surface specific activity (apposition or resorption) that produces a net change in the size and/or shape of the bone. It is an uncoupled process meaning that cell activation (A) proceeds independently to formation (F) or resorption (R). Modeling is the fundamental mechanism of growth, atrophy and re-orientation. Remodeling is defined as the turnover or the internal reconstructing of previously existing bone. It is a coupled tissue phenomenon. Activation of the precursor cells results in the following:

Activation (A)

Resorption (R)

Quiescence or reversal (Q)

Formation (F)

The duration of A - R(Q) - F remodeling cycle  is also referred to as the SIGMA CYCLE. It is about 6 weeks in rabbits, 12 weeks in dogs and 17 weeks in humans.

 


Related Discussions:- What is physiologic adaptation

Oxygen affecting the growth of microorganism, oxygen affecting the growth o...

oxygen affecting the growth of microorganism? The presence of oxygen in the atmosphere is required for the survival of human beings. Contrary to this, you would realize that th

Types of cleavage, TYPES OF CLEAVAGE - Depending upon the distribution ...

TYPES OF CLEAVAGE - Depending upon the distribution & amount of yolk, cleavage is of following types - 1 .      HOLOBLASTIC EQUAL CLEAVAGE ( holos , whole ; blastos, ger

Explain jugular venous pressure and pulsation in details, Explain Jugular...

Explain Jugular venous pressure and pulsation in details? The jugular venous system is in direct continuity to right atrium in systolic extending to right ventricle in diast

Consequences of diarrhoea, All of us must have suffered from diarrhoea at l...

All of us must have suffered from diarrhoea at least once in our lifetime. How do you feel thereafter? Well most of us must have experienced weakness, dizziness, dryness of mouth a

Determine the types of exercises, Determine the Types of Exercises Exer...

Determine the Types of Exercises Exercises are generally grouped  into three types: - Flexibility exercises such as stretching improves the range of motion of muscles and jo

Sex-limited traits, Sex-Limited Traits Sex Limited Traits are traits ex...

Sex-Limited Traits Sex Limited Traits are traits expressed only in one sex, although the genes controlling thcm arc prcscnt as wcll as transmitted to both thc sexes. Therefore,

Neuron, It arises from a one embryonic cell known as neuroblast Types of...

It arises from a one embryonic cell known as neuroblast Types of neuron:  According to number of process¬ (a) Unipolar: Only axon is there. e.g. mesencephalic nucleus. (b)

Electrophoresis gel to load 60, Assume your tilapia fish muscle homogenate ...

Assume your tilapia fish muscle homogenate has a protein concentration of 5769 ?g/ml. You take 32.5 ?l of this fish homogenate, mix it with 12.5 ?l sample buffer and 5 ?l reducing

Difference between vegetative and generative cell , Difference between Vege...

Difference between Vegetative and Generative Cell The cytoplasm of the vegetative cell and the generative cell is distinctly different. The generative cell is transparent and

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