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Everyone has one nostril that is larger than the other.

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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

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People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Sieve-tube elements and companion cells in phloem tissue Sieve-tube elements and companion cells in phloem tissue
Three types of muscle tissue: skeletal, smooth, and cardiac muscle. Three types of muscle tissue: skeletal, smooth, and cardiac muscle.
Glandular Tissue of the Right Breast Glandular Tissue of the Right Breast
(A) Lymphatic vessel with valves within tissue cells; (B) photomicrograph of lymphatic vessel with v (A) Lymphatic vessel with valves within tissue cells; (B) photomicrograph of lymphatic vessel with v
Adipose tissue Adipose tissue
Compressing the breast between plates provides a better image of breast tissue. Regular mammograms ... Compressing the breast between plates provides a better image of breast tissue. Regular mammograms ...
Video: Negative Feedback Regulation of Blood Pressure

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