THE SENSES.  1  Humans have 5 senses: touch, taste, smell, sight, and hearing. The senses are based on receptor cells or groups of receptor cells called sense organs. 2  Receptors respond to stimuli and send nerve impulses along sensory neurons.
Claim: Menâs underwear is referred to as âBVDsâ because the term is an abbreviation of the phrase âBoyâs Ventilated Drawers.â.
A quadrilateral is a 2-dimensional closed shape with four straight sides. E.g. The shape ABCD shown here is a quadrilateral. A line segment drawn from one vertex of a quadrilateral to the opposite vertex is called a diagonal of the quadrilateral. AC is a diagonal of quadrilateral ABCD, as is BD. There are seven types of quadrilaterals that can be divided into two groups: parallelograms and other quadrilaterals.