The platysma changes the facial expression which plays an important role in human social behavior. In elderly people â when the skin increasingly loses its elasticity â both inner faces of the platysma form two longitudinal wrinkles on the neck.
Biological psychology is a branch of psychology that studies the physiological causes of behavior. This field is sometimes referred to as behavioral neuroscience or biopsychology.
Definitions for biologicalËbaÉª ÉËlÉdÊ Éª kÉl. biological, biologic(adj) pertaining to biology or to life and living things. biological(adj) of parents and children; related by blood. biological child. biological(Adjective) Of or relating to biology.