Structural in animal system D129-D130 (d130 (Levels of Organization (Cells…
Structural in animal system D129-D130
What are tissues?
A group of cells that are similar in structure and/or work together to achieve a specific function
So that grouping of cells to perform a common function is called a tissue
Are all of our tissues the same?
no, not all tissues are similar
It has so many differences between them
For example, the protection in plant cells plays a very important role for them whereas the animal cells also have a layer of a wall for protection
Organ and Organ system
Levels of organization
Plant tissues vs. Animal tissues (the basics)
Many are dead supportive tissues to provide mechanical strength
Growth limited to specific regions; so dividing tissues are localized in those regions
Mostly living tissues
Growth is almost uniform throughout
We human beings are multicellular
We are made out of many cells
how does the development process of a human being take place?
So this develop process starts with a small fertilized egg
When there is a fusion between a male sex cell and a female sex cell, fertilization happens
^^This will undergo many rounds of mitosis and almost a newborn almost needs some 41 rounds of mitosis (which is 41 round of cell division)
Some of the cells group together to form
etc and so that is how different tissues form
Those tissues group to form different organs like
Levels of Organization
they start with the cells and the cell group together to form the tissues inside the human body
Then when the tissue is made, the tissues later form the organs of a human body
They later group together to form the organ system
The organs makes the organism an organism
Example: Human body
what happens when you breath?
When we breath, our chest muscles moves
When we breathe in and out, there is some expansion around the chest muscles
So they are a special type of tissues that can cause this movement
When we take oxygen, it is going through the lungs and now that oxygen is transported to a different part of the body because it is not only the lungs that need oxygen, the rest of the body parts also needs oxygen to function
so does the oxygen will be transported to different parts of the body?
That will happen through blood
Which sends the nutrients throughout the body