Why some like it hot: The science of spiciness

Spiciness, or its perception, occurs in most cuisines worldwide. The chili pepper of the genus Capsicum (family Solanaceae) is one of the world's most widely used spices, found in thousands of recipes and sometimes eaten ...

What to do if your pet is bitten by a snake

The beginning of autumn brings pumpkins, falling leaves and baby snake season as snakes are born and hatched in late summer to early fall. The cooling weather also makes snakes more active, putting our curiously natured dogs ...

Popular pharmaceutical target in cells may prove even more useful

Researchers at University of California San Diego have identified a new signaling process involving G protein-coupled receptors (GPCRs), a cellular target already exploited by hundreds of diverse drugs. The discovery, published ...

Blood pressure

Blood pressure (BP) is the pressure (force per unit area) exerted by circulating blood on the walls of blood vessels, and constitutes one of the principal vital signs. The pressure of the circulating blood decreases as it moves away from the heart through arteries and capillaries, and toward the heart through veins. When unqualified, the term blood pressure usually refers to brachial arterial pressure: that is, in the major blood vessel of the upper left or right arm that takes blood away from the heart. Blood pressure may, however, sometimes be measured at other sites in the body, for instance at the ankle. The ratio of the blood pressure measured in the main artery at the ankle to the brachial blood pressure gives the Ankle Brachial Pressure Index (ABPI).

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