Human Kidney Structures, Free Standing

Quick Answer: The free standing kidney model is a human kidney structures model that supports itself, so it can sit upright on a bench or desk during demonstrations. Its teaching focus is the microscopic working parts of the kidney: the nephron, the glomerulus and how they produce urine.

The Nephron in Detail

Free standing in the title means the model supports itself, which suits a demonstration bench or a revision station that students walk round. Models sold as kidney, nephron and glomerulus sets often present an enlarged nephron and glomerulus beside a kidney section; the components of this model should be confirmed before ordering, but the teaching focus is the nephron.

Each nephron begins at the renal corpuscle: a knot of capillaries, the glomerulus, cupped in Bowman’s capsule. Blood arrives in the afferent arteriole and leaves in the narrower efferent arteriole, and that difference in width keeps the pressure in the glomerulus high enough to push fluid out into the capsule. The filtrate then passes through the proximal convoluted tubule, where most glucose, amino acids and salts are reabsorbed, into the loop of Henle, then the distal convoluted tubule and the collecting duct.

Where the distal tubule passes back beside the arterioles of its own glomerulus, specialised cells form the juxtaglomerular apparatus, which senses blood pressure and salt levels and releases renin. That single contact point ties the kidney to blood pressure control, a link students often find surprising and one worth showing on an enlarged model.

Specifications

Applications

• Demonstrating the path of filtrate through each part of the nephron
• Explaining glomerular filtration pressure through the afferent and efferent arterioles
• Introducing the juxtaglomerular apparatus and the renin system in physiology
• Revision stations where students label the nephron on a stand-alone model

Care & Handling

• Place the free standing kidney model away from bench edges and busy walkways, as a free-standing model can topple if bumped.
• Lift it by its base or stand rather than by the model itself.
• Dust with a soft brush and keep water away from the stand fittings.

Why Choose LabEquip

Physiology tutors and biology teachers choose the free-standing version when the model needs to sit on a demonstration bench during lessons. LabEquip also lists the kidney structures model for comparison, and both are in its biology lab products. Ask through the contact page which components are included.

Frequently Asked Questions

What does free standing mean for this kidney model?

The model stands on its own support, so it can be placed on a bench, desk or table without being held, mounted on a wall or laid flat.

Why is the efferent arteriole narrower than the afferent?

The narrower outflow creates resistance, which keeps the blood pressure inside the glomerulus high. That pressure drives filtration of plasma into Bowman’s capsule.

What is reabsorbed in the proximal convoluted tubule?

Almost all the glucose and amino acids, and a large share of the water, sodium and other salts in the filtrate, are reabsorbed here and returned to the blood.

What does the loop of Henle do?

It creates a concentration gradient in the medulla by moving salts out of the filtrate. This gradient lets the collecting ducts draw water back and produce concentrated urine.

What is the juxtaglomerular apparatus?

It is a group of cells where the distal tubule meets the arterioles of its glomerulus. It senses changes in blood pressure and salt levels and releases renin, starting a hormone chain that raises blood pressure.

Should I choose this model or the standard kidney structures model?

Choose the free-standing version when it will be used on a bench for demonstrations or walk-round revision. Compare the components of both listings to decide which matches your teaching.

Last Updated: September 2026