The skin is composed of two main layers: the epidermis, made of closely packed epithelial cells, and the dermis, made of dense, irregular connective tissue that houses blood vessels, hair follicles, sweat glands, and other structures.

Rwanda: boundaries + provinces + names

Map of the Argentine Provinces with their names in English.

Cross-sectional structural features and geological zones of a complex lunar impact crater.

The internal and external components of a bicycle headset and steering assembly, from the handlebar clamp to the front fork.

Earth's internal layers alongside the propagation paths, refraction, and shadow zones of seismic P-waves and S-waves.

The mechanical components of a bicycle rear derailleur system including the cassette, cage, pulleys, and shifting cable.

Key kinematic angles, forces, and contact patch deformation of a pneumatic tire during steady-state cornering.

Mechanical and structural components of a railway bogie including wheelsets, primary and secondary suspension systems, bolster, and braking elements.