Major Endocrine Glands and Their Locations Revision Notes | GCSE OCR Foundation Biology

What this lesson covers

Identify and locate the key endocrine glands in the human body including the pituitary gland, pancreas, thyroid, adrenal glands, ovaries, and testes. Le...

• Identify the location of major endocrine glands on a diagram of the human body
• Describe the position of the pituitary, thyroid, adrenal, pancreas, ovaries and testes
• Explain the role of each major endocrine gland in hormone production
• Compare the locations of different endocrine glands in relation to body systems

Key ideas to keep in view

Use this lesson to stay inside B3.2 Coordination and control - the endocrine system while connecting the detail back to the wider B3: Organism level systems topic.

• B3: Organism level systems
• B3.2 Coordination and control - the endocrine system
• GCSE OCR Foundation Biology

Lesson notes preview

Read the core explanations from Major Endocrine Glands and Their Locations before testing yourself from memory.

• Your body runs on two control systems: nerves for instant responses, and hormones for longer-term regulation. Think of hormones as chemical text messages sent through your bloodstream - but where exactly do these messages come from?
• Six major endocrine glands act as your body's hormone factories, each positioned strategically to monitor and control different body systems. Knowing their locations isn't just anatomy - it's understanding how your body maintains balance.
• A pea-sized gland located at the base of the brain. Often called the 'master gland' because it controls other endocrine glands.
• Picture your brain from the side - the pituitary sits right underneath, protected by a bony pocket in your skull called the sella turcica. It's perfectly positioned to receive signals from your brain and respond by releasing hormones that control growth, reproduction, and other glands.
• Trap: Many students think the pituitary is inside the brain tissue. Actually, it hangs below the brain like a cherry on a stem, connected by the pituitary stalk.
• 3. The Neck Regulators - Thyroid and Adrenals
• A butterfly-shaped gland located in the neck, wrapped around the front and sides of the trachea (windpipe).
• Feel the front of your neck - the thyroid sits right there, hugging your windpipe like a bow tie. Its butterfly shape means it has two lobes connected by a bridge of tissue called the isthmus.
• Two triangular glands that sit on top of each kidney, one on the left and one on the right side of the body.
• The adrenals are your stress response headquarters. Picture your kidneys (about level with your lower ribs) - each adrenal gland sits on top like a cap. Their position near major blood vessels allows them to quickly flood your system with stress hormones when needed.

Continue through the topic

Move to the related lessons or back to the topic page when you need the wider sequence before exam-style practice.