Cardiac muscle (heart muscle). This type of muscle is found solely in the walls of the heart. It has similarities with skeletal muscles in that it is striated and with smooth muscles in that its contractions are not under conscious control. However this type of muscle is highly specialised.t has similarities with skeletal muscles in that it is striated and with smooth muscles in that its contractions are not under conscious control. However this type of muscle is highly specialised.
There are few natural sources of vitamin D. For that reason, most of the vitamin D in your diet comes from fortified foods, such as dairy products and alternatives, breakfast cereals, juices and margarine.
In the diet, vitamin D is found in foods that have high levels of cholesterol, such as cod liver oil and eggs. Studies have been done to see if there is a correlation between the levels of vitamin D a person has and their cholesterol levels, but results are inconclusive.here is typically a correlation between foods that are rich in vitamin D and cholesterol â that being, foods that are high in vitamin D are often also high in cholesterol.