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Bending the caudal end of the isolated spinal cord affects the locomotor net of the lamprey by:Group of answer choicesactivating the motor neurons directlyactivating ipsilateral inhibitory and contralateral excitatory sensory neuronsactivating contralateral inhibitory and ipsilateral excitatory sensory neuronsinhibiting contralateral excitatory sensory neuronsinhibiting the opposite tilt

Question

Bending the caudal end of the isolated spinal cord affects the locomotor net of the lamprey by:Group of answer choicesactivating the motor neurons directlyactivating ipsilateral inhibitory and contralateral excitatory sensory neuronsactivating contralateral inhibitory and ipsilateral excitatory sensory neuronsinhibiting contralateral excitatory sensory neuronsinhibiting the opposite tilt

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Solution

The bending of the caudal end of the isolated spinal cord affects the locomotor net of the lamprey by activating ipsilateral inhibitory and contralateral excitatory sensory neurons.

Here's a step-by-step explanation:

  1. The lamprey's spinal cord is isolated and the caudal (tail) end is bent.

  2. This bending stimulates sensory neurons in the spinal cord.

  3. The sensory neurons that are activated are the inhibitory neurons on the same side (ipsilateral) as the bend and the excitatory neurons on the opposite side (contralateral) of the bend.

  4. The activation of these sensory neurons affects the locomotor net, which is the network of neurons that controls movement in the lamprey.

  5. The result is a change in the lamprey's movement, as the inhibitory neurons reduce activity on one side of the body and the excitatory neurons increase activity on the other side.

This problem has been solved

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