That would be the left ventricle, it needs to pump blood to the high pressure, high resistance systemic circuit and requires the muscle to do so, hence it is the thickest part.
Well, all the bones of your skull are of the same hardness, or should be. Typically the thickest part of the skull is the forehead.
The belly of any muscle is the most fleshy part.
cell wall i the cell part that only plant cells have.
The cell wall is the outermost part of the cell. Anything outside the cell wall is considered the extracellular environment.
cell wall.
The eye wall.
the thickest part is under a mountain range
It depends whether it's a concave or convex lens. If it's a convex lens - the thickest part is at the centre. With a concave lens, the thickest part is around the edge.
The cream in full milk, is the richest part.
Thermosphere or the ionosphere is the thickest layer on earth. It reaches a height 400 kilometers.
The left ventricle is thickest (as it is in all four-chambered mammalian hearts) this is because it is the part of the heart that pumps blood around the whole body and so needs to be able to withstand greater pressure hence the thickness
The Fascicle
Corona
The thickest part of the crust is found under the highest elevated mountain ranges on the continents.
The thickest part of the Earth is called the mantle.
veins
The thigh and breast