Free Endocrine System Labeling Worksheet

This endocrine system labeling worksheet is a hands-on way to introduce kids to the major glands of the body’s hormone system.

When my son worked on this, the act of placing each label helped him understand that glands aren’t just vocabulary words, they connect to real functions like growth, energy, and mood.

Whether you’re homeschooling or in the classroom, these free printable worksheets for science provide a clear visual guide and come with an answer sheet to make checking quick and easy.

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How to Use the Endocrine System Labeling Worksheet

This free endocrine system labeling worksheet gives students a clear diagram of the endocrine system with space to label each gland. The included answer key features an endocrine system diagram with labels so students can check their work independently.

I’ve found it works best as a quick review after introducing the topic in class or at home. Kids get immediate practice connecting new terms to a visual.

You can also assign it as homework, use it in small groups, or add it to a human body systems unit for reinforcement.

What is the Endocrine System?

The endocrine system is a group of glands that release hormones, chemical messengers that keep your body in balance. These hormones affect everything from how you sleep and grow to how your body handles stress and energy.

Pineal gland

Deep in the brain, the pineal gland acts like a clock, producing melatonin to help you fall asleep and wake up at the right times.

Hypothalamus

The hypothalamus connects your brain to your hormone system, controlling hunger, body temperature, and more. It also tells the pituitary gland when to get to work.

Pituitary gland

Often called the “master gland,” the pituitary sends out signals that control growth, reproduction, and many other essential functions.

Thyroid gland

Shaped like a butterfly in your neck, the thyroid regulates metabolism, how your body uses energy. It affects your heartbeat, temperature, and overall energy levels.

Thymus

Most active during childhood, the thymus helps train your immune system to recognize and fight germs.

Pancreas

Located behind the stomach, the pancreas helps control blood sugar by releasing the hormones insulin and glucagon.

Adrenal glands

Sitting on top of your kidneys, the adrenal glands release adrenaline and cortisol, giving your body a boost during stress.

Ovary (Females)

The ovaries produce estrogen and progesterone, guiding puberty and pregnancy while also releasing eggs.

Placenta (Females, during pregnancy only)

The placenta forms during pregnancy, delivering nutrients and oxygen to the baby and producing hormones to support healthy development.

Testicle (Male)

The testicles make testosterone, which supports male development, and they are also where sperm is produced.

More Body Systems Worksheets

If your kids enjoyed labeling the endocrine system, you might want to keep the momentum going with other body system activities. These are some of the ones we’ve used alongside anatomy lessons:

• Body System Word Search – A fun way to reinforce vocabulary. My son liked using this as a warm-up activity before diving into labeling worksheets.
• Lymphatic System Labeling Worksheet – A good follow-up once students are comfortable with the endocrine glands. It shows how another system works to protect the body.
• Human Body Organs Worksheet – Helps students see the bigger picture by connecting individual glands and organs into one complete system. Great for review or end-of-unit practice.

Best Human Body Books for Kids

I like to pair worksheets with books so kids get both visuals and context. These are a few that worked well for us:

• Endocrinology for Kids – A bright picture book that makes hormones simple enough for elementary learners.
• Know Yourself – An interactive series with stories and activities. My son enjoyed how engaging it was. (You’ll also get 15% off with my link.)

• Human Body Learning Lab – Hands-on projects that help kids connect what they’re reading to real life.
• Human Anatomy for Kids – A clear overview of different body systems, easy for kids to follow independently.
• Human Body! – Beautiful illustrations and broad coverage, perfect to keep on hand for reference.

Get Your Free Endocrine System Printable Worksheet Here!

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Last Updated on 30 June 2026 by Clare Brown