Action potentials (i.e. nerve impulses) occur in several types of animal cells<span>, called </span>excitable cells<span>, which include </span>neurons<span>, </span>muscle cells<span>, </span>endocrine<span> cells, and in some </span>plant cells<span>. </span><span>It takes around 40 action potentials for a smell sensation to be reported.</span>
Explanation:
a living system is a system in an organism consisting of organs. each organs carry out different functions to ense life processes can be carried out effectively. The function of the organs are determined by the cells which make up the tissues. The connections are important to remove wastes/toxins out of the body and help absorb nutrienys, in some cases produce hormones as a form of homeostasis to ensure the body remains in a healthy optimised state constantly.
Answer:
protons..................
