Deltoid is main shoulder muscle, triangle-shaped and connects to clavicle, scapula, and humerus. Muscle enables abduction, flexion, extension, and rotation of upper arm. Three heads: anterior, lateral, and posterior, each with specific movements
Distal portion of quadriceps femoris tendon connecting patella to tibial tuberosity. About 4.5 cm long in adults, ranging from 3 to 6 cm. Forms medial and lateral patellar retinacula when patella fully ossifies. Separated from joint by infrapatellar fat pad and tibia by bursa
Calcaneal spur is a bony outgrowth from heel bone. Inferior spur develops on calcaneus's inferior aspect. Posterior spur forms at Achilles tendon insertion
GTPS is inflammation of the trochanteric bursa at the top of the femur. Can result from injury or occur without identifiable cause. Common in middle-aged women, often associated with gluteal tendon disease. May coexist with low back pain, arthritis, and obesity
Chorionic villi sprout from chorion to provide maternal blood contact. Umbilical arteries carry embryonic blood to villi. Blood returns to embryo through umbilical vein. Villi invade uterine decidua and absorb nutritive materials
Uvula is a conic projection from soft palate containing glands and muscles. Muscular part shortens and broadens uvula for swallowing. Controlled by pharyngeal branch of vagus nerve