Question

chose the correct answer which describes spinal reflex arc?
○ effector, afferent neuron, integration center, efferent neuron, receptor
○ receptor, afferent neuron, integration center, efferent neuron, effector
○ effector, efferent neuron, integration center, afferent neuron, receptor
○ receptor, efferent neuron, integration center, afferent neuron, effector

question 14
0.75 pts
which part of the reflex loop is responsible for carrying the signal from the receptor to the cns?
○ efferent (motor) nerve
○ afferent (sensory) nerve
○ control center
○ effector

Explanation:

First Question (Spinal Reflex Arc)

The spinal reflex arc sequence is: Receptor (detects stimulus) → Afferent (sensory) neuron (carries signal to CNS) → Integration center (in CNS, processes signal) → Efferent (motor) neuron (carries signal from CNS) → Effector (responds to signal). So the correct order is Receptor, afferent neuron, integration center, efferent neuron, effector.

Afferent (sensory) nerves carry signals from receptors (periphery) to the Central Nervous System (CNS). Efferent nerves carry from CNS to effectors, control center processes, and effector responds. So the part carrying signal from receptor to CNS is afferent (sensory) nerve.

Answer:

B. Receptor, afferent neuron, integration center, efferent neuron, effector

Question 14 (Reflex Loop Signal Carrier)