The liver is one of the most important organs in the human body. It works like a powerhouse and helps keep our body healthy in many ways. Whether you’re preparing for SSC, RRB NTPC, UPSC, or any State PSC exam, questions related to Human Organs and Their Functions are common in the General Science and Biology sections.
Let’s understand the top 5 functions of the liver in an easy and exam-oriented manner.
📙Explore the Complete Biology Guide for Competitive Exams – Topics, Tips & Must-Know Facts!
📍Introduction: What is the Liver?
- The liver is a reddish-brown organ located on the right side of the belly, just below the diaphragm.
- It is the largest internal organ in the human body.
- It performs over 500 functions, but we’ll focus on the 5 most important ones.
✅ 1. Digestion Helper: Makes Bile Juice
One of the main jobs of the liver is to help in digestion.
How?
- The liver makes a special liquid called bile.
- Bile helps to break down fats in the food we eat.
Key Point:
Bile is stored in the gallbladder and sent to the small intestine when needed.
📝 Exam Tip:
“Bile juice is made by the liver and stored in the gallbladder” – a common MCQ in SSC and RRB exams.
✅ 2. Body’s Filter: Removes Toxins
The liver works like a filter or cleaning machine.
How?
- It removes harmful substances (toxins) from the blood.
- These toxins include drugs, alcohol, and waste products from the body.
Key Point:
The liver filters about 1.4 liters of blood every minute.
📝 Memory Trick:
Think of the liver as a water purifier for your blood!
✅ 3. Energy Bank: Stores Glucose
The liver also acts as an energy bank.
How?
- It stores a sugar called glucose as glycogen.
- When your body needs energy, the liver turns glycogen back into glucose and releases it into the blood.
Key Point:
The liver keeps your blood sugar level stable.
📝 Fact to Remember:
Glucose storage = Glycogen; Organ storing glycogen = Liver.
✅ 4. Protein Factory: Makes Blood Proteins
Proteins are very important for the body to grow and heal.
How?
- The liver makes important proteins like:
- Albumin – helps carry things in the blood.
- Clotting factors – help stop bleeding.
Key Point:
Without the liver, your body wouldn’t stop bleeding properly.
📝 Possible MCQ:
Which organ makes blood clotting factors? – Answer: Liver
✅ 5. Immunity Supporter: Fights Germs
The liver also helps to keep the immune system strong.
How?
- It has special cells called Kupffer cells that kill germs and damaged cells.
Key Point:
These cells help the body fight infections and stay healthy.
📝 Bonus Tip:
Kupffer cells = Liver defenders!
Quick Revision Table
| Function | How it Helps the Body |
|---|---|
| Makes Bile | Helps digest fats |
| Filters Toxins | Cleans blood from harmful substances |
| Stores Glucose | Maintains blood sugar levels |
| Makes Blood Proteins | Helps in healing and blood clotting |
| Fights Germs | Supports the immune system |
🎯Final Thoughts
The liver is a multitasker – it digests food, stores energy, cleans your blood, and even helps your body fight diseases. For exams like SSC, UPSC, RRB NTPC, or state PSCs, understanding liver functions gives you a strong base for Biology and General Science.
Stay confident, stay focused! 🧠💪
“The more you learn, the closer you get to success!”
📌 Practice MCQs
Q1: Which juice is produced by the liver?
a) Saliva
b) Bile
c) Pancreatic juice
d) Intestinal juice
✅ Answer: b) Bile
Q2: Where is glycogen stored in the body?
a) Brain
b) Heart
c) Liver
d) Lungs
✅ Answer: c) Liver
Q3: Which organ helps in blood clotting by making clotting factors?
a) Kidney
b) Liver
c) Pancreas
d) Intestine
✅ Answer: b) Liver
