Option c. endodermis
greek word endon, within + derma,skin; the layer of living cells, with various characteristically thickened walls and no intercellular spaces, which surrounds the vascular tissue of certain plants and occurs nearly all roots and certain stem and leaves.
Appropriately named, <u>slow pain </u>oftentimes is not detected until seconds or even minutes after an injury; this is due to the activation of chemically sensitive pain receptors.
Explanation:
According to physiology of pain, slow pain arises when unmyelinated C fibers of the muscles are activated. This is pronounced as a dull and aching pain and is more diffuse in nature rather than fast pain which are more acute and rapid.
Most of the times this pain will not be detected immediately after the stimulus like an injury but may start slowly.
Slow pain can also be burning, throbbing or even nauseous. Chronic pain conditions mostly are characterized by slow pain.
Slow pain is elicited by stimuli like mechanical, chemical or thermal which are received by the chemically sensitive pain receptors on the skin or other organs of the body.
Based on our understanding, we can confirm that the structures that comprise the outer ear include the tragus, helix, and the lobule.
<h3>What is the outer ear?</h3>
Contrary to that of the inner ear, the outer ear includes the parts of this organ that do not actually influence our ability to hear. These parts include the components of the ear that we are able to see on an everyday basis, separated into three distinct parts named the tragus, helix, and lobule.
Therefore, we can confirm that the structures that comprise the outer ear include the tragus, helix, and the lobule.
To learn more about the ear visit:
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4 of the 21 standard amino acids have aromatic rings
