What is the largest gland in the human body?

Appeared in: Raj. CHO -2020

Explanation

The liver is the largest gland in the human body, weighing approximately 1300–1600 grams in a healthy adult.
It is also the largest internal organ, located in the upper right quadrant of the abdomen.
The liver has both exocrine functions (secreting bile for digestion) and endocrine functions (releasing glucose, plasma proteins, etc., into the blood).

Option A: The pancreas is a vital gland with both endocrine and exocrine functions, but it is significantly smaller than the liver, weighing only about 70-120 grams.
Option C: The spleen is an organ of the lymphatic and immune systems, not a gland. Its primary roles are filtering blood and housing immune cells.
Option D: The gallbladder is a small, hollow organ that stores and concentrates bile produced by the liver. It does not produce its own substances for secretion, so it is classified as a storage organ, not a gland.

Visual 1: Diagram: An anatomical illustration showing the liver, pancreas, spleen, and gallbladder within the abdominal cavity to provide a visual comparison of their relative sizes and locations.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomy and Physiology: Glandular and Digestive Systems as background academic context rather than a clinical decision trigger.
A nurse assesses for an enlarged liver (hepatomegaly) by palpating the right upper quadrant of the abdomen. An enlarged, palpable liver can be a sign of serious conditions like hepatitis, cirrhosis, or congestive heart failure.
Liver function is critical for drug metabolism. Nurses must be aware of a patient's liver health when administering medications, as impaired function can lead to drug toxicity and potentially fatal conditions like hepatic coma.
What if? If a patient has cirrhosis (scarring of the liver), the liver may actually shrink in the end stages. The nurse's focus would then shift to managing severe complications like portal hypertension (increased pressure in the portal vein), ascites (fluid in the abdomen), and bleeding from esophageal varices.

How to Approach the Question

This is a factual recall question based on fundamental anatomy.
First, identify the key terms in the question: 'largest' and 'gland'.
Next, understand the definition of a gland: an organ that produces and secretes substances for use in the body.
Evaluate each option based on this definition. The spleen (a lymphoid organ) and the gallbladder (a storage organ) can be eliminated because they are not primarily glands.
Finally, compare the remaining two glands, the pancreas and the liver, based on size. Recall that the liver is the largest internal organ in the body, making it the largest gland as well.

Concept Tested & Keywords

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Practise the full Raj. CHO -2020

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