Skeletal and Muscular System

Arthritis primarily affects the joints, which are the connections where bones meet. It causes inflammation, pain, and stiffness in these areas. The condition specifically targets joint tissues, not bones, lungs, or brain directly.

Tendons are tough connective tissues that connect muscles to bones, allowing muscle contraction to move the skeleton. Ligaments connect bones to other bones at joints, while cartilage provides flexible support and joints allow movement between bones.

Arthritis primarily affects the joints, which are the connections where bones meet. It causes inflammation, pain, and stiffness in these areas. The condition specifically targets joint tissues, not bones, lungs, or brain directly.

The adult human body has 206 bones. This number decreases from 270+ at birth due to bone fusion during development. Options A (990), C (106), and D (200) are all incorrect.

The femur is the longest and strongest bone in the human body, located in the thigh region between the hip and the knee joints. It is the primary bone of the upper leg and bears much of our body weight when standing or walking.

The feet and ankles contain 52 bones (26 in each foot), which is exactly one-quarter of the 206 total bones in the adult human body. The statement says 'one quarter' which is mathematically correct, though often rounded in casual speech.

The tibia, also called the shinbone, is the larger and stronger of the two bones in the lower leg (the other being the fibula). It connects the knee to the ankle and bears most of the body's weight.

Femur, tibia, and cranium are all specific bones with anatomical names. Marrow is the soft tissue found inside bones (particularly in the hollow spaces of long bones like the femur), not a bone itself. Therefore, marrow is the odd one out as it's a tissue, not a skeletal structure.

Rhino horns are made of keratin, the same protein found in hair and nails. They're not bone, muscle, or skin tissue. This is why rhinos are poached - their horns are similar to compressed hair fibers.

Each human foot contains 26 bones, which includes 7 tarsal bones in the ankle, 5 metatarsals in the mid-foot, and 14 phalanges in the toes. Together, the 52 bones in both feet make up about one-quarter of the 206 total bones in the adult human body, reflecting the foot's complex structure.

The foot contains approximately 100 ligaments that connect bones to each other, providing stability and support while allowing controlled movement. These include the plantar, dorsal, and interosseous ligaments among others. Higher numbers (200, 300, 400) overcount the actual ligament structures.

The 'terrible triad' refers to a severe knee injury involving three structures: the anterior cruciate ligament (ACL), medial collateral ligament (MCL), and medial meniscus. This injury commonly occurs in contact sports like football and soccer when the knee is hit from the side while the foot is planted.

An adult human being typically has 206 bones, which decrease from approximately 270 bones at birth as many bones fuse together during growth. This number can vary slightly between individuals, but 206 is the standard anatomical count. The bones provide structure, protection, and facilitate movement in the human body.

The 'funny bone' is actually the ulnar nerve where it passes around the elbow. Hitting it causes tingling in the ring and little fingers. The humerus is the upper arm bone near this area.