Mindblown: a blog about philosophy.

1. Vitamin A (retinol) or a naturally occurring or synthetic substance chemically related to it. (Retinoid literally means “like retinol.”)2. In ophthalmology, resembling the retina.

The retina is the nerve layer that lines the back of the eye, senses light, and creates impulses that travel through the optic nerve to the brain. There is a small area, called the macula, in the retina that contains special light-sensitive cells. The macula allows us to see fine details clearly. The eye has a number of…

The procedure of restoring to life, as in cardiopulmonary resuscitation (CPR).

An uncomfortable (creeping, crawling, tingling, pulling, twitching, tearing, aching, throbbing, prickling, or grabbing) sensation in the calves that occurs while sitting or while lying down. The result is an uncontrollable urge to relieve the uncomfortable sensation by moving the legs. Restless leg syndrome is a common cause of painful legs. The leg pain typically eases with motion of…

An uncomfortable (creeping, crawling, tingling, pulling, twitching, tearing, aching, throbbing, prickling, or grabbing) sensation in the calves that occurs while sitting or while lying down. The result is an uncontrollable urge to relieve the uncomfortable sensation by moving the legs. Restless leg syndrome is a common cause of painful legs. The leg pain typically eases with motion of…

Restless anal syndrome is a proposed variant of restless legs syndrome described in a 2021 case report in relation to an infection with the COVID-19 virus (SARS-CoV-2). It was described by doctors in Japan after a patient with COVID-19 disease developed restless, deep anal discomfort associated with an urge to move that worsened with rest and in the…

More appropriately called interphase. The interval in the cell cycle between two cell divisions when the individual chromosomes cannot be distinguished, interphase was once thought to be the resting phase but it is far from a time of rest for the cell. It is the time when DNA is replicated in the cell nucleus.

1. Repose. Relaxation.2. A fragment of embryonic tissue that has been retained after the period of embryonic development. Also called an embryonic rest.

A virus that causes mild respiratory infections, colds, and coughs in adults and can produce severe respiratory problems, including bronchitis and pneumonia, in young children and anyone with compromised immune, cardiac, or pulmonary systems. Abbreviated RSV. RSV is spread via respiratory secretions and is highly contagious. Infections usually occur during annual community outbreaks, often lasting 4 to 6 months,…

The number of breaths per minute or, more formally, the number of movements indicative of inspiration and expiration per unit time. In practice, the respiratory rate is usually determined by counting the number of times the chest rises or falls per minute. The aim of measuring respiratory rate is to determine whether the respirations are normal, abnormally…