atrophy
TRANSCRIPT
![Page 1: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/1.jpg)
By :
Mohamed Khalid Ali Newera
ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts
![Page 2: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/2.jpg)
Definition
Mechanism
classification
How To Avoid Atrophy?
![Page 3: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/3.jpg)
Definition
Decrease size of organ as a result of decrease
in both the number and size of the cells.
I’m Normal !
Atrophy Attack!:????
![Page 4: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/4.jpg)
I’m Normal !
Atrophy Attack!:????
![Page 5: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/5.jpg)
I’m Normal !
Atrophy Attack!:????
![Page 6: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/6.jpg)
Example
Macroscopic:
1.Affected organ decrease in size
2.Appear : soft flabby
3.Color : pale
4.Capsule : wrinkled
![Page 7: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/7.jpg)
Microscopic :
1. the cells in atrophic organs are smaller in size
2. Increase spaces between muscle fiber
![Page 8: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/8.jpg)
Reduction in structural components of cell
Atrophy
Protein
synthesis
Mitochondria
&
myofilaments
Endoplasmic
reticulum
Protein
catabolism
![Page 9: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/9.jpg)
![Page 10: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/10.jpg)
1)Physiological
1. Atrophy of thymus gland
2. thyroglossal duct after birth
3. atrophy of ovaries & uterus after menopause
4. Atrophy of uterus following child birth
![Page 11: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/11.jpg)
2)Pathological
1.Starvation
2.Neuropathic atrophy:
due to loss of innervation.
3. Senile atrophy : in old age
![Page 12: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/12.jpg)
2)Pathological
4.Pressure atrophy: due to long continued pressure on a
tissue leading to decrease in its blood supply with atrophy of its cells
e.g. amyloidosis of the liver
Amyloidosis liver
![Page 13: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/13.jpg)
2)Pathological
5.Ischemic atrophy:
due to decrease of blood supply
e.g. atherosclerosis
6.Decreased work load: e.g. immobilized limb
![Page 14: Atrophy](https://reader034.vdocuments.mx/reader034/viewer/2022042817/55a73cb31a28abe1258b476f/html5/thumbnails/14.jpg)
How To Avoid Atrophy?
1. eating a healthy diet
2. getting regular, moderate exercise
3. avoiding smoking or quitting
4. Do not stay in one position for too long