Question

a person’s hand gets too close to a pot of boiling water, so he jerks it out of the way. which groups of nerves are involved in these steps? select all that apply. alpha nerve fibers beta nerve fibers delta nerve fibers somatic nerves special visceral nerves general visceral nerves done

Explanation:

1. Delta nerve fibers: These are fast - conducting sensory nerve fibers that are involved in detecting sharp, intense stimuli like the heat from boiling water. They quickly transmit the pain and temperature information to the central nervous system.
2. Somatic nerves: The somatic nervous system is responsible for voluntary and reflexive movements of the skeletal muscles. The jerking of the hand away from the boiling water is a reflex action that involves the somatic nerves, as it controls the muscles of the hand and arm.
3. Alpha nerve fibers: Alpha motor nerve fibers are involved in controlling the contraction of skeletal muscles. In the reflex action of pulling the hand away, alpha nerve fibers are involved in activating the muscles to perform the movement.

Beta nerve fibers are more involved in slower - conducting sensory functions like touch and pressure (not the acute stimulus here). Special visceral nerves are related to the innervation of special visceral structures (like the pharyngeal arches derivatives) and not to this reflex. General visceral nerves are involved in the innervation of visceral organs and not in skeletal muscle reflexes for protecting the hand from heat.

Answer:

• delta nerve fibers
• somatic nerves
• alpha nerve fibers