Human Model – Endocrine Gland, Small

Quick Answer: The human endocrine gland model, small, is a compact endocrine system model showing where the body’s hormone-producing glands lie, typically including the pituitary, thyroid, adrenal glands, pancreas and gonads. It is used in biology and nursing lessons on hormones and their control.

Mapping the Hormone Glands

Unlike the digestive or circulatory systems, the endocrine glands are not connected to one another by tubes. They release hormones into the blood, which carries them throughout the body, so the main thing an endocrine model teaches is location: where each gland sits and which hormones it produces. Models of this kind commonly show the pituitary and pineal glands in the head, the thyroid and parathyroids in the neck, the thymus in the chest, the adrenal glands on top of the kidneys, the pancreas, and the ovaries or testes, but the glands included in this small version should be confirmed.

The pituitary gland, hanging beneath the hypothalamus, is often called the master gland because many of its hormones control other glands. The hypothalamus in turn controls the pituitary, linking the nervous and endocrine systems. The thyroid regulates metabolic rate; the adrenal glands produce adrenaline for the fight-or-flight response and cortisol for longer-term stress; the pancreas contains the islets that release insulin and glucagon to control blood glucose.

Most hormone levels are held steady by negative feedback. When thyroid hormone levels rise, for example, the hypothalamus and pituitary reduce their stimulating signals and the thyroid slows its output. A compact model is handy for tracing these loops at the desk, with students pointing from gland to target organ as they explain each step.

Specifications

Applications

• Introducing the endocrine system and the location of each gland
• Teaching blood glucose control by insulin and glucagon
• Explaining negative feedback using the thyroid or adrenal axis
• Comparing nervous and hormonal communication in secondary biology

Care & Handling

• Keep the endocrine system model in a labelled box; small glands on compact models can snap off if other items are stacked on them.
• Dust gently with a soft brush and avoid wetting any printed labels.
• Handle it by the base or body outline, not by individual glands.

Why Choose LabEquip

Biology teachers use an endocrine model to give students a mental map of glands that are otherwise hard to picture. The small version is part of LabEquip’s biology lab products, and the nervous system poster helps when comparing hormonal and nervous control. Ask for details through the LabEquip contact page.

Frequently Asked Questions

Why is the pituitary called the master gland?

Many of its hormones control other endocrine glands, including the thyroid, adrenal glands and gonads. It is itself controlled by the hypothalamus of the brain.

What is the difference between endocrine and exocrine glands?

Endocrine glands release hormones directly into the blood. Exocrine glands, such as salivary and sweat glands, release their secretions through ducts onto a surface or into a cavity.

How do insulin and glucagon control blood glucose?

Insulin lowers blood glucose by helping cells take it up and by promoting its storage as glycogen. Glucagon raises blood glucose by causing the liver to break glycogen down.

What is negative feedback?

It is a control loop in which a change triggers a response that reverses it. When a hormone level rises, the glands that stimulate its release reduce their signals, so the level falls back.

Is the pancreas part of the endocrine or digestive system?

Both. Most of the pancreas produces digestive enzymes, while the scattered islets of Langerhans release insulin and glucagon into the blood.

What do the adrenal glands produce?

The outer cortex produces steroid hormones such as cortisol and aldosterone, and the inner medulla produces adrenaline and noradrenaline for the fight-or-flight response.

Last Updated: September 2026