Problem 66 - Objective Biology for NEET

Question

What is the approximate weight of an adult human liver? (a) \(1.2-1.5 \mathrm{~kg}\) (b) 2.5-3.5 kg (c) 0.5-1.0 kg (d) 200 grams

Step-by-Step Solution

Answer

The approximate weight of an adult human liver is \(1.2-1.5\) kilograms. Therefore, answer (a) is correct.

Step 1: Identify the biological concept

Determine which biology area this addresses.

Step 2: Recall relevant principles

Review key concepts.

Step 3: Apply knowledge

Use biological reasoning.

Step 4: State the answer

The answer is: The approximate weight of an adult human liver is \(1.2-1.5\) kilograms. Therefore, answer (a) is correct.

Key Concepts

Human Anatomy and the Liver

Understanding human anatomy, specifically the liver, is crucial when it comes to exploring the intricacies of the human body. The liver is the largest solid organ in the human body, and it plays a vital role in maintaining the body's metabolic balance. A healthy adult liver typically weighs between 1.2 to 1.5 kilograms, which means option (a) from the exercise is correct. This weight can vary based on factors such as age, body size, and health condition.

Located in the upper right quadrant of the abdominal cavity, just beneath the diaphragm, the liver's weight is a small but significant part of the overall body mass. It is made up of two main lobes and is reddish-brown in color with a rubbery texture. Studying the liver's size and weight is fundamental in human anatomy as it helps in understanding its relation with other organs and the entire circulatory system.

Liver Function

The liver’s role in the human body is incredibly diverse, serving many functions essential for life. To begin with, the liver detoxifies various metabolites, synthesizes proteins, and produces biochemicals necessary for digestion. It plays an instrumental role in breaking down carbohydrates, lipids, and proteins into energy the body can use. The liver also filters the blood coming from the digestive tract before passing it to the rest of the body. Furthermore, it is responsible for the production of bile, an alkaline compound which aids in digestion and the absorption of lipids in the small intestine.

Understanding the function of the liver can greatly enhance a student's grasp of biology and human anatomy. In terms of biochemical processes and the intricate role the liver plays in maintaining homeostasis, its health is indicative of the body's overall wellbeing. These details are not just academic points but are also practical; they inform medical practices and health-related decisions.

NEET Biology

Students preparing for competitive exams like the National Eligibility cum Entrance Test (NEET) in biology must have a profound understanding of the human anatomy, including the liver. Biology is a major part of the NEET curriculum, and the liver's physiology and anatomy are commonly tested concepts. Insight into the organ's weight, functions, and interactions with other body systems is imperative for NEET aspirants.

Though the question on the liver's weight may seem straightforward, it reflects the kind of detailed anatomical knowledge expected in NEET. Aspiring medical professionals must be equipped to address a broad spectrum of topics, from cellular level processes to the functioning of complex body systems, like that of the liver. Practical and theoretical knowledge converge in this exam, creating a comprehensive picture of a student's proficiency in biology which is key in their future medical endeavors.