25. How can cells repair injured or damaged parts of tissues or organs? Cell/s
a. Has the ability to regenerate and replace damaged parts of tissues or organs.
b. Has no capability of repairing itself.
c. Destruct the growth and development of the tissues and organs.
d. Are enable to divide and replicate itself.
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Answer:
A po , tinanong ko kay mama eh haha
As living beings that encounter every kind of traumatic event from paper cut to myocardial infarction, we must possess ways to heal damaged tissues. While some animals are able to regrow complete body parts following injury (such as the earthworm who grows a new head following bisection), humans are sadly incapable of such feats. Our means of recovery following tissue damage consists largely of repair rather than pure regeneration. Thousands of times in our lives, a meticulously scripted but unseen wound healing drama plays, with cells serving as actors, extracellular matrix as the setting and growth factors as the means of communication. This article briefly reviews the cells involved in tissue repair, their signaling and proliferation mechanisms and the function of the extracellular matrix, then presents the actors and script for the three acts of the tissue repair drama.
Key words: tissue repair, regeneration, scarring, wound healing, growth factors, extracellular matrix, stem cells
Proem
All the world's a stage,
And all the men and women merely players;
They have their exits and their entrances
And one man in his time plays many parts,
His acts being seven ages
Shakespeare
As You Like It
Act 2, scene 7, 139–143