Chapter 5, Problem 1PT

Summary Introduction

Introduction:

Sensation and perception are the two different qualities that occur throughout the life cycle, but it has some close relationship with each other. Sensation is the process that can sense the external stimuli, but it interrupts the sensory information by means of perception.

Answer to Problem 1PT

Correct answer:

The specialized receptors, thalamus, and cortex are the order of structure lists that participates in sensation and perception. Therefore, option (d) is correct.

Option (d) is given as “specialized receptors, thalamus, and cortex”.

Explanation of Solution

Justify the reasonfor the correct statement:

The sensory receptors are the specialized cells present in the sense organs that can receive the physical and chemical stimulation and pass nerve impulses to the brain. The nerve signal first reaches to the thalamus and then to the cerebral cortex. In the cerebral cortex, the sensory information is identified as sound, smell, taste, sight, or touch.

Hence, option (d) is correct.

Justify the reasons for the incorrect statements:

Option (a) is given as “thalamus, specialized receptors, and cortex”.

This is not the structure list order that is present in the brain for the response of a particular sensory information. Hence, it is a wrong answer.

Option (b) is given as “specialized receptors, cortex, and thalamus”.

This is not the correct order for the transportation of signals in the brain.  Hence, it is a wrong answer.

Option (c) is given as “cortex, specialized receptors, and thalamus.”

This is not the correct order of structure lists that is present in the brain for transport of the signals to the brain. Hence, it is a wrong answer.

Hence, options (a), (b), and (c) are incorrect.

Conclusion

The brain receives the sensory information from the sense organs through the sensory receptors and travels through the thalamus and cortex.