Phosphorus deficiency. 1  Symptoms: Slow growth and dull yellow foliage. 2  Cause: Phosphorus is needed for healthy roots and shoot growth. 3  Soil shortages of phosphorus are rare, but may occur in areas with high rainfall and heavy clay soil. 4  Remedy: Apply fertilisers such as superphosphate or bone meal.
Smooth muscle is an involuntary non-striated muscle. It is divided into two subgroups; the single-unit (unitary) and multiunit smooth muscle. Within single-unit cells, the whole bundle or sheet contracts as a syncytium (i.e. a multinucleate mass of cytoplasm that is not separated into cells).mooth muscle is found within the walls of blood vessels (such smooth muscle specifically being termed vascular smooth muscle) such as in the tunica media layer of large (aorta) and small arteries, arterioles and veins.
There are three types of muscle tissue: skeletal, smooth, and cardiac. Skeletal muscle tissue is a voluntary type of muscle tissue that is used in the contraction of skeletalâ¦ parts. It is striated (alternating with light and dark bands, called striations) and is attached to bones. A single skeletal muscle fiber is very long and has many nuclei, located at the periphery of the cell. Individual muscle fibers are parallel to each other. Smooth muscle tissue is found in the walls of hollow internal organs and blood vessels.