Question

A little girl steps on a sharp shell at the beach. What nerve pathway will this stimulus signal follow in order to lift her foot from the sharp object? a. Sensory neuron, interneuron, motor neuron, effector b. Motor neuron, interneuron, sensory neuron, effector c. Sensory neuron, motor neuron, interneuron, receptor d. Motor neuron, interneuron, sensory neuron, receptor

Answer 1

The path would be a because she feels it (sensory), then her brain gets it (interneron), then she is told to lift her foot (moter), and so she does (recepter)

Answer 2

Answer:

The correct answer is option A.

Explanation:

A reflex action takes place when nerve impulses travel a simple pathway known as a reflex arc. It has 5 basic parts:

-Receptors presented in the sense of organs or skin to detect a stimulus and generates an impulse.

-Sensory neurons send nerve impulses to the CNS that is spinal cord and brain.

-Interneurons in the CNS connect and carry messages to sensory neurons to the next part of a reflex arc.

-Motor neurons conduct impulses and send messages from the CNS to an effector.

-Effectors respond according to the impulses by contracting if it is a muscle fine or secreting hormone or enzyme if it is a gland.

Thus, the correct answer is option A.