Skeletal System

Bone meal is a type of organic fertilizer made from ground animal bones. It is rich in phosphorus and calcium, making it a beneficial soil additive for promoting strong root growth and overall plant health. Bone meal is often used to improve flowering and fruiting in plants.

The joints.

We have to consider that the bone is a very dense, specialized form of connective tissue. Like reinforced concrete of building constructions, bone matrix is predominantly a mixture of tough fibers, such as, type I collagen fibrils, which resist pulling forces; and solid particles, e.g., calcium phosphate as hydroxyapatite crystals, which resist compression. Both volumes in the bone, collagen and calcium phosphate, are nearly equal.

Our rib cage and sternum protect our lungs and heart by providing a sturdy and protective enclosure. The rib cage acts as a frame to protect the delicate organs within, while the sternum provides additional support and stability. Working together, they help safeguard our lungs and heart from external forces.

The rib cage plays a crucial role in supporting and protecting delicate organs like the brain, liver, and lungs. It forms a protective barrier around these organs and helps maintain their structural integrity and function.

Interstitial lamellae in compact bone are remnants of previous osteons that have been partially resorbed during bone remodeling. They help to fill in gaps and spaces between intact osteons, providing structural support to the bone. Additionally, they contain blood vessels and nerves that supply the surrounding bone tissue with nutrients and sensory input.

A bullet can cause severe damage to the arm, including fractures, nerve damage, blood vessel injury, and soft tissue damage. The extent of the damage depends on factors such as the type of bullet, velocity, and trajectory. Immediate medical attention is crucial in cases of gunshot wounds to the arm.

The two pubic bones meet at a joint called the pubic symphysis. It is a secondary cartilaginous joint (a joint made of hyaline cartilage and fibrocartilage). The joint has a certain amount of 'give' which is necessary during childbirth in women.

Osseous structures refer to the bony components of the spine that may show signs of degeneration or wear over time. In scattered endplate degenerative changes in the thoracic spine, there may be areas of bony spur formation, disc space narrowing, and sclerosis at the endplates, indicating degenerative changes affecting the bones and discs in that region of the spine. These changes can contribute to symptoms such as pain, stiffness, and limited mobility in the thoracic spine.

A cat's skull is typically about 3-5 millimeters thick. The thickness can vary based on factors such as age and breed. The skull serves to protect the cat's brain and delicate structures inside the head.

Intercostal spaces

The bone marrow within your bones forms new red blood cells. After making the blood the bone marrow sends its new blood to the circulatory system. the bone marrow sends new blood cells to the circulatory system more than 500,000,000 times a day.

The skeletal system supports your body's flesh, organs, and all your other parts. This support allows blood to safely travel through both standard blood vessels and the Haversian canals, which are hollowed-out sections of bone through which the blood vessels can flow .

Because the circulatory circulates blood that is enriched with vitamins and minerals, the circulatory system provides the skeletal system with calcium and other minerals that are stored inside the bone. It also provides the proteins and nutrients required to help strengthen bones.

Joints are structures in our body that connect bones and provide cushioning with cartilage and synovial fluid. They allow for smooth movement and prevent bones from scratching or bumping against each other when we move. Additionally, muscles, tendons, and ligaments surrounding the joints provide support and stability during movement.

A mammoth has around 317-322 bones in their whole body. This is based on findings of a mammoth bones in SD.

The rib cage, which is part of the skeletal system, acts as a protective barrier for the lungs. It provides a sturdy cage-like structure that can absorb and distribute some of the impact forces if you fall, helping to protect the delicate lung tissue from damage. Additionally, the surrounding muscles and soft tissues can also help cushion and protect the lungs in case of a fall.

The collarbone is fused into one V shaped bone.

Attachment of the ligaments that hold the vertebrae together and the

muscles that move them

Joints may be synovial (with a cavity) or fibrous. Synovial joints are filled with synovial fluid. Fibrous joints lack this. Fibrous joints are found in between the vertebrae.

Cartilage in is both joints. This can be hylaine or fibrocartilage. Both regenerate.

The synovial fluid is rather slippery and allows easy movement in those joints. If this joint is suddenly and rapidly pulled, the fluid doesn't fill quickly and a "snapping" sound is heard.

the three layers are....

compact bone

spongy bone

bone marrow

Tendons attach muscles to bone. Tendons are strong, fibrous connective tissues that transfer the force generated by contracting muscles to bones, allowing movement to occur.

1. Cartilage is found at the elbow joint so that the synovial fluid doesn't touches the ulna directly.

Actually it's cartilages and the synovial fluid which makes the joint movements smooth.....

Concave indented areas or openings in the bone are called cavities or depressions. These structures serve various purposes, such as providing attachment points for muscles or forming joints with other bones in the body.

The space between the cranial bones of a newborn is filled with fibrous connective tissue called fontanelles. These fontanelles allow for the baby's skull to be flexible during childbirth and allow for brain growth in the first few months of life. They eventually close as the bones of the skull fuse together.

Olfactory receptor neurons extend axons through tiny channels in the cribriform plate called olfactory foramina. These axons then travel through the olfactory nerve to the olfactory bulb in the brain, where they synapse with other neurons to transmit smell signals. The olfactory foramina allow for the passage of these axons while protecting the brain from potential pathogens or irritants in the nasal cavity.