The smooth layer of cells lining the inside of the heart is the endocardium. It provides protection for the heart chambers and valves.
The pericardium membrane is shiny and slippery due to its serous layer, which produces a small amount of serous fluid. This fluid reduces friction between the heart and surrounding structures as the heart beats, allowing for smooth movement. The shiny appearance is attributed to the mesothelial cells lining the serous pericardium, which secrete this lubricating fluid. This design helps protect the heart and maintain its efficiency during contractions.
It goes shiny and smooth.
use conditioner, it's gonna make your hairs shiny and smooth.
It isn't.... take water for example it isn't "smooth" or "shiny" but has reflective properties
obsidian
Shiny and smooth.
mica
Because it is a metal and can be polished to a smooth shiny surface.
gloss
The shiny lining of the coelom in a perch fish is called the peritoneum. It is a thin membrane that lines the body cavity and provides protection for the internal organs.
gleaming chromed refulgent effulgent lustrous glistening reflective polished shiny-smooth brilliant crystalline candy diamantine
Most glass is shiny but can be made to look dull.