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eyelash sign

a reaction of eyelid movement to the stimulus of stroking the eyelashes. It can be used as part of a diagnostic test for loss of consciousness due to a functional or psychogenic disorder. If the loss of consciousness is due to a neurological disease or injury, the reflex will not occur.

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Psychology term of the day

February 27th 2024

protein metabolism

protein metabolism

all the biochemical reactions involved in the manufacture and breakdown of proteins. The body makes a large variety of complex proteins from amino acids, including enzymes, antibodies, certain hormones (e.g., insulin), and structural proteins, such as keratin, collagen, and the actin and myosin molecules of muscle. Proteins are broken down into their constituent amino acids during the basic turnover of cell proteins as well as for the elimination of toxic peptides and abnormal proteins. In case of severe energy starvation, with depletion of the body’s fat reserves, protein can be broken down to provide carbon to make glucose, but this impairs normal body functions.