Skeletal and Muscular System

The funny bone sensation occurs when the ulnar nerve is compressed against the humerus bone in the upper arm. The tingling sensation is felt in the forearm and fingers, not from an actual bone being hit. The humerus runs from shoulder to elbow, and the ulnar nerve runs in a groove on its inner side.

Orthopaedists (or orthopedic surgeons) specialize in the musculoskeletal system including bones, joints, ligaments, tendons, and muscles. They commonly treat bone fractures, spinal curvatures like scoliosis, sports injuries, and arthritis. The statement is accurate and the answer is True.

Cartilage is a flexible, strong connective tissue found in various parts of the body including the ears and nose, where it provides structural support while maintaining flexibility. Ligaments connect bones to other bones, tendons connect muscle to bone, and muscle is contractile tissue responsible for movement.

The shoulder joint (glenohumeral joint) is a ball-and-socket joint, where the rounded head of the humerus fits into the shallow glenoid cavity of the scapula. This structure allows wide range of motion in all directions. Hinge joints bend only one way (like elbows), pivot joints rotate (like the neck), and fixed joints don't move (like skull bones).

The femur, or thigh bone, is the longest and strongest bone in the human body, running from the hip to the knee. It can withstand significant force and is crucial for walking and standing. The fibula is a thinner bone alongside the tibia in the lower leg, while vertebrae are individual bones of the spine and the spinal cord is nervous tissue, not a bone.

The tibia (shinbone) is the larger of the two bones in the lower leg, connecting the knee to the ankle. It bears most of the body's weight. The fibula is the smaller bone alongside it.

In medical terminology, a cadaver is a dead human body used for anatomical study, research, or dissection. Medical schools rely on body donation programs to provide cadavers for education. The term comes from Latin 'cadaver' meaning 'dead body'.

The tibia (shinbone) is the larger and stronger of the two bones in the lower leg, connecting the knee to the ankle. It bears most of the body's weight. The fibula is the smaller leg bone. The skull contains cranial and facial bones, while arm bones include humerus, radius, and ulna.

The cochlea is the spiral-shaped bone in the inner ear that converts sound vibrations into nerve signals. The semicircular canals are fluid-filled tubes that help with balance, not the main circular structure of the ear.

The middle ear contains three small bones called ossicles: the malleus (hammer), incus (anvil), and stapes (stirrup). Sound vibrations from the eardrum first strike the malleus, then transfer to the incus (anvil), and finally to the stapes. The incus is the second bone in this sequence, receiving vibrations from the hammer.

The cochlea is the spiral-shaped, snail-shell like structure located in the inner ear. It contains the organ of Corti which converts sound vibrations into nerve signals. The hammer (malleus), anvil (incus), and stirrup (stapes) are the three small ear bones, but none are snail-shell shaped.

Babies are born with approximately 300 bones, but many of these fuse together during growth and development. Adults have 206 bones because separate bones in the skull, spine, and pelvis merge into single structures.

Hexadectylism is a medical condition characterized by having six fingers or toes on one or both hands or feet, known as polydactyly. The term derives from 'hexa' meaning six and 'dactyl' meaning digit or finger.