Kinesthesis: perception of the position and movement of our limbs in space. Somatosensation: a collective term for sensory signals from the body. Pain serves as warning system that tells us when something might be internally wrong or when an external stimulus might be dangerous. Temperature sensations enable us to seek or create a thermally safe environment. Mechanical sensations provide a powerful means of communicating our thought and emotions nonverbally. We must always be in direct contact with an object to perceive it by touch (excluding the sun and a jackhammer) Skin is the largest and heaviest organ, approximately 1. 8 square meters and 4 kilos. Epidermis: outer of two major layers of skin. Dermis: the inner of two major layers of skin, consisting of nutritive and connective tissues, within which lie the mechanoreceptors. Touch receptors: embedded in outer layer (epidermis) and underlying layer (dermis). Each type of receptor can be characterized by three attributes: 1.