AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

THE NERVOUS AND ENDOCRINE SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In humans, one function of an interneuron is to relay impulses directly from
A
receptors to the brain
B
receptors to other receptors
C
motor neurons to receptors
D
a sensory neuron to a motor neuron
Explanation: 

Detailed explanation-1: -As the name suggests, interneurons are the ones in between-they connect spinal motor and sensory neurons. As well as transferring signals between sensory and motor neurons, interneurons can also communicate with each other, forming circuits of various complexity. They are multipolar, just like motor neurons.

Detailed explanation-2: -The primary function of interneurons is integration. They carry sensory information and regulate motor activity. More interneurons are activated when a response to stimuli is required to be complex. Interneurons are utilized in all higher functions, including learning, memory, cognition, and planning.

Detailed explanation-3: -Sensory neurons carry signals from the outer parts of your body (periphery) into the central nervous system. Motor neurons (motoneurons) carry signals from the central nervous system to the outer parts (muscles, skin, glands) of your body. Interneurons connect various neurons within the brain and spinal cord.

Detailed explanation-4: -Interneurons (also called internuncial neurons, relay neurons, association neurons, connector neurons, intermediate neurons or local circuit neurons) are neurons that connect two brain regions, i.e. not direct motor neurons or sensory neurons.

Detailed explanation-5: -A neuron that transmits the impulse from the sensory neuron to a motor neuron is a relay neuron. Relay neuron allows sensory and motor neurons to communicate with each other.

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