Similar to skeletal muscle tissue, cardiac muscle does not regenerate to a great extent. Dead cardiac muscle tissue is replaced by scar tissue, which cannot contract. As scar tissue accumulates, the heart loses its ability to pump because of the loss of contractile power.
This is a personal question on Ethics. Without animals we would have to test products and medications on humans which could be really difficult and cause further issues. However, when animals are used scientists can see what would happen to another human and animals are treated much better than humans would
The answer is shown down below, hope this helps!
Answer:
Hormones are chemical messengers that relay messages to cells that display specific receptors for each hormone and respond to the signal.
Answer:
epiglottis
Explanation:
I think it is the Epiglottis that is not a component of the bronchial tree
