<span>The first part of the question is: The male's ability to shake its tail is the mechanistic cause of this behaviour. For the second part of the question, the mate choice is the adaptive function of this behaviour.</span>
<span>This is true<span> as patients that are in chronic pain are sensitive to acute recurrences of pain whether in the same body part or in different areas of the body. While pain is considered a sensation, and sensations are desensitized after prolonged exposure; the opposite is true for pain as people suffereing from chronic pain becomes more sensitive to pain.
</span><span><em>This principle is adapted from the 9 core principles of pain assessment (Lewis's Medical-Surgical Nursing, 2017)</em>
<em>1. Patients have the right to appropriate assessment and management of pain.</em>
<em>2. Pain is always subjective</em>
<em>3. Physiologic and behavioral signs of pain are not sensitive or specific for pain</em>
<em>4. Pain is an unpleasant sensory and emotional experience.</em>
<em>5. Assessment approaches, including tools, must be appropriate for the patient population.</em>
<em>6. Pain can exist even when no physical cause can be found</em>
<em>7. Different patients experience different levels of pain in response to comparable stimuli.</em>
<em>8. Patients with chronic pain may be more sensitive to pain and other stimuli</em>
<em>9. Unrelieved pain has adverse physical and psychologic consequences. Acute pain that is not adequately controlled can result in physiologic changes that increase the likelihood of developing persistent pain.</em></span></span>
The plasma membrane is described as a fluid mosaic model because its made up of a phospholipid bilayer, allowing it easily to bend and move along without breaking or ripping the membrane due to the hydrophobic and hydrophilic poles of the bilayer.
An action potential is an excitatory presynaptic nerve. An EPSP (Excitatory postsynaptic potential) takes place in the dendrites of the postsynaptic nerve. This spreads passively to the axon hillock. Depolarization of this region opens voltage-gated ionic channels. Sufficient membrane depolarization to threshold opens enough to these channels to produce an action potential.
Non myelinated axon; the currents associated with the action potential spread to the depolarized region of the axon.
In myelinated axon; the currents associated with the action potential spread to the next Node of Ranvier.
The action potential travels down the axon to the axon terminals.
Because the chromosomes have to divide basicly and they go to an offspring.