Largest sense organ of human body is

Appeared in: NHM UP Staff Nurse-2021 Shift-2nd

Explanation

The skin is the largest organ of the body by both weight and surface area, forming the complete outer covering.
It is classified as the largest sense organ because it is densely populated with a variety of nerve endings and sensory receptors.
These receptors are specialized to detect different stimuli from the external environment, including touch, pressure, vibration, temperature (heat and cold), and pain.

Option A: The heart is a vital organ, but its primary function is to pump blood through the circulatory system. It is not a sense organ.
Option B: The lungs are the main organs of the respiratory system, responsible for the exchange of oxygen and carbon dioxide. They are not sense organs.
Option D: Hands are complex appendages composed of multiple tissues (bones, muscles, nerves, skin). While the skin on the hands is rich in sensory receptors, the hand itself is a body part, not a single organ.

Clinical Relevance

Nursing practice connection: Knowing Anatomy and Physiology: Integumentary and Sensory Systems helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses routinely assess skin integrity, color, temperature, and sensation as these are key indicators of a patient's circulatory, neurological, and overall health status.
Impaired skin sensation, common in conditions like diabetes (peripheral neuropathy) or spinal cord injuries, places patients at a high risk for pressure ulcers, burns, and other injuries they cannot feel.
What if? If a patient has been diagnosed with peripheral neuropathy, the nurse's priority shifts from simple assessment to proactive patient education. This includes teaching the patient to perform daily self-inspections of their feet, test water temperature with an elbow or thermometer, and wear appropriate footwear to prevent injuries.

How to Approach the Question

First, identify the key concepts in the question: 'Largest' and 'sense organ'. The correct answer must satisfy both conditions.
Evaluate each option against these criteria.
Consider the Heart: It's an organ, but its primary function is pumping blood, not sensation. Eliminate this option.
Consider the Lungs: They are organs for respiration, not sensation. Eliminate this option.
Consider the Hands: They are body parts with high sensory input, but they are not a single organ. The skin covering the hand is the organ. This makes 'Hands' an incorrect choice.
Consider the Skin: It is the largest organ by surface area and weight, and it is filled with sensory receptors. It fits both criteria perfectly.

Concept Tested & Keywords

Q-jjka2_c7zLTB2HqVC8Tb

E6 Anatomy Applied Ashalatha 4e p. 228-230

E6 Physiology Essentials Sembulingam 10e Part 2 p. 5-7

Practise the full NHM UP Staff Nurse-2021 Shift-2nd

Attempt every question from this paper in a timed mock, then review the full solution for each one.