A man falls into a deep sleep with one arm under his head. This arm is paralyzed when he awakens, but it tingles and pain sensation in it is still intact.The reason for the loss of motor function without loss of pain sensation is that in the nerves to his arm BblGepuTe OAMH OTBeT: a. sensory nerves are nearer the bone than motor nerves and hence are less affected by pressure b. A fibers are more sensitive to pressure than C fibers c. C fibers are more sensitive to pressure than A fibers d. motor nerves are more affected by sleep than senson nerves e. A fibers are more susceptible to hypoxia than B fibers

## Step 1<br />The problem presents a scenario where a man falls asleep with one arm under his head. Upon waking, he finds that his arm is paralyzed but still experiences tingling sensations. The question asks us to identify the reason for this phenomenon.<br /><br />## Step 2<br />The options provided are:<br />a. sensory nerves are nearer the bone than motor nerves and hence are less affected by pressure<br />b. A fibers are more sensitive to pressure than C fibers<br />c. C fibers are more sensitive to pressure than A fibers<br />d. motor nerves are more affected by sleep than sensory nerves<br />e. A fibers are more susceptible to hypoxia than B fibers<br /><br />## Step 3<br />The correct answer is option a. This is because sensory nerves, which carry information about touch and pain, are generally closer to the surface of the skin and are less affected by pressure. On the other hand, motor nerves, which carry instructions for movement, are located deeper within the body and are more likely to be compressed or damaged by pressure.<br /><br />## Step 4<br />The other options (b, c, d, e) are not correct because they either do not explain the phenomenon correctly or are not relevant to the scenario presented.