The are bones that have complex shapes as related

The long bones consists of a shaft and two extremities which the bone of the weight  is much greater the width.   It is to facilitate movement, also support the weight of the body and are mostly found in the appendicular skeleton. It involves bones in the lower limbs. For example, the tibia, femur, fibula and phalanges.The short bones, have equal width and length. They are not strong but when gathered together produce flexible structures such as carpals. These bones are located in the ankle and wrist joints and provide movements and stability to the body. They are mostly spongy bones and are cube-shaped. Example is the patella.Flat bones is to protect the the internal organs such as the brain, heart and pelvic organs. They are plate, thin like bones that provide protection to the body. For example cranium provides protection to the brain.The irregular bones are bones that have complex shapes as related to their functions. The complexity of this bones helps protect the internal organs. Example is the irregular bones of the vertebral column that protect the spinal cord and the irregular bones of the pelvis protect organs in the pelvic cavity.The role of minerals in the process of bone ossification is to help deposit calcium carbonate and calcium phosphate in the bone matrix, which helps with the hardening of the bone.The immovable joints are bones that are located in the sutures of the cranium where connective tissues connects the bone with a thin layer of dense fibrous. These allows no movement.  It is to provide stability to certain parts of the body and also serves as bone ossification. Example are the joints where the ulna and radius bones meet in the lower arm and the bones in the skull.Slightly immovable joints are joints which has a limited range of movement and it is as a result of either cartilage or fibrous tissue. Examples; between the vertebra of the spinal cord and where ribs connect the sternum. It is to hold together the skeletal frame, providing firmness but at the same time allowing a little movement.The joints in which the bone articulation ends are separated by a joint cavity containing synovial fluid. A synovial membrane is produces synovial fluid, lining capsule. The synovial fluid is a tissue fluid and smoothen the joints, therefore reducing friction and allowing smooth movement. The thin layer of a hyaline cartilage caps the ends of articulating bones, hence acting as a shock absorber and preventing friction.The smooth muscle are usually found in the walls of hollow visceral organs. Examples are the stomach, urinary bladder and the respiratory passages. They are muscles that’s have no striations and are involuntary, meaning we cannot certainly control it. It consists of sheet of spindles shaped fibres. They are linked together through  junctions. Mostly controlled by the autonomic nervous system also influenced by hormones. They are able to maintain a steady level of contraction known as tone and also helps to maintain the capacity of a hollow. It is to slow down the rate of the contraction and to also facilitate the involuntary movements like the contraction of the intestinal walls and that of the stomach. The relaxation and contraction of the of the walls of the arteries, blood flow and the blood pressure around the body is regulated.