Transitional epithelium, also called urothelium, is a specialized type of stratified epithelial tissue that lines parts of the urinary tract, including the renal calyces, renal pelvis, ureters, and urinary bladder. Its two main functions are allowing urinary organs to stretch as they fill with urine and protecting the underlying tissues Read more
Ronnie Coleman now lives with significant mobility challenges but remains active in the fitness community. As of October 2026, the eight-time Mr. Olympia champion is 62 years old. He survived a life-threatening episode of sepsis in 2025 and later returned to modified gym training. Coleman has used a wheelchair and Read more
The metacarpals are five long bones that form the framework of the palm of each hand. Located between the wrist and fingers, these bones are numbered I through V, starting at the thumb and ending at the little finger. They support the palm, connect the wrist to the fingers, and Read more
The parietal bone is one of two paired, curved flat bones that form much of the upper and lateral portions of the human skull. Located on either side of the head, these bones make up a large part of the cranial vault, the bony structure that surrounds and protects the Read more
The temporal bone is one of two paired bones located on the sides and base of the human skull, near the ears. Each temporal bone forms part of the cranial base, protects structures involved in hearing and balance, supports jaw movement, and provides pathways for important nerves and blood vessels. Read more
The three main arm bones are the humerus, radius, and ulna. The humerus runs from the shoulder to the elbow, forming the upper arm. The radius and ulna extend from the elbow to the wrist, forming the forearm. Together, these bones provide support, connect the major joints of the arm, Read more
The knee is a modified hinge-type synovial joint that connects the thigh to the lower leg. It consists of three principal bones: the femur (thighbone), tibia (shinbone), and patella (kneecap). The nearby fibula provides attachment points for supporting tissues but is not part of the knee’s main articulations. These are Read more
Cobblestone Throat is a harmless but often uncomfortable condition in which small, raised bumps appear on the back of the throat because the lymphatic tissue becomes swollen from ongoing irritation. The most common cause is postnasal drip, but allergies, viral infections, acid reflux, and environmental irritants can also trigger it. Read more
An itchy throat is a scratchy, tickling, or irritating sensation that often makes you want to cough or clear your throat. Common causes include allergies, postnasal drip, viral infections, dry air, dehydration, and acid reflux. Drinking water, using honey, and keeping the air comfortably humid may provide relief. However, the Read more
The hyoid bone is a small u-shaped bone that can be found in your neck. This bone provides several functions including: assisting you to swallow, speak, and breathe. Most of the bones in the human body are connected to other bones; however, the hyoid bone does not connect to any Read more