The hardest substance in the human body is Dentin. Dentin is a calcified tissue that forms the bulk of a tooth, providing structural support and protection. It is harder than both bone and nail.
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The upper surface of the skin is called Epidermis. The epidermis is the outermost layer of the skin, providing a protective barrier against environmental factors and containing cells responsible for pigment production and keratinization.
The pigment that gives color to human skin is Melanin. Melanin, produced by melanocytes in the skin, determines skin tone and provides protection against the harmful effects of ultraviolet (UV) radiation from the sun.
The largest organ of the human body is Skin. It serves as a protective barrier, regulating temperature, sensing touch, and playing a crucial role in immune function. The skin comprises multiple layers and performs various essential functions for overall health ...
The skin is thickest at On the sole. The skin on the soles of the feet, particularly the plantar surface, is thicker compared to other parts of the body, as it endures constant pressure and friction from walking and standing.
The heart is deprived of Voluntary muscle. Unlike skeletal muscles, which are under conscious control, the heart consists of cardiac muscle, an involuntary muscle type. This means that we cannot directly control or consciously regulate the contractions of the heart ...
The function of the Iris is Controlling the size of the pupil. The Iris, the colored part of the eye, regulates the diameter of the pupil, adjusting it in response to changes in light intensity to optimize visual clarity.
To differentiate colors in the retina present in the human eye, there are Cones. Cones are photoreceptor cells in the retina responsible for color vision and high visual acuity, particularly in well-lit conditions.
The image of the object is formed on the Retina. Positioned at the back of the eye, the retina contains specialized cells that capture light and convert it into electrical signals for transmission to the brain for visual processing.
The amount of light entering the eye is controlled by the Iris. This colored muscular structure behind the cornea regulates the size of the pupil, adjusting its diameter in response to varying light conditions to optimize visual perception.