The duodenum is divided into four parts: superior, descending, horizontal, and ascending. It begins at the pylorus and ends at the duodenojejunal flexure. The descending part receives bile and pancreatic secretions. Its C-shaped curve surrounds the head of the pancreas View Diagram Parts of the Duodenum Small Intestine
Finger movements include abduction and adduction, controlled by the dorsal and palmar interossei and lumbrical muscles. Abduction moves fingers away from the midline of the hand, while adduction brings them closer. These actions are essential for grip, precision tasks, and View Diagram Finger Abd Add
The pancreas receives blood supply from branches of the splenic artery and vein, including pancreaticoduodenal branches, supporting endocrine and exocrine function. Knowledge of pancreatic vasculature is essential for surgeons, radiologists, and medical students in planning resection, managing trauma, or interpreting View Diagram Vasculature of the Pancreas Splenic Artery and Vein
The deep muscles of the gluteal region, including the piriformis, obturator internus, gemelli, and quadratus femoris, stabilize and rotate the hip. Knowledge of their anatomy is essential for orthopedic surgeons, physiotherapists, and medical students in managing hip injuries, planning surgery, View Diagram Deep Muscles of the Gluteal Region
Radiographs of a fractured patella reveal the location, type, and displacement of the fracture. The patella serves as a sesamoid bone within the quadriceps tendon, enhancing knee extension leverage. Understanding patellar anatomy is critical in orthopedics, emergency care, and physiotherapy. View Diagram Radiograph of Fractured Patella
The thoracodorsal artery supplies the latissimus dorsi muscle and contributes to the vascular network of the posterior thorax. This anatomy diagram of the anatomical course of the thoracodorsal artery shows its origin from the subscapular artery and its descent along View Diagram Anatomical Course of the Thoracodorsal Artery
A positive Trendelenburg test indicates weakness of the hip abductor muscles, particularly the gluteus medius, causing pelvic drop on the unsupported side during single-leg stance. Knowledge of hip mechanics is essential for orthopedic surgeons, physiotherapists, and medical students in diagnosing View Diagram Positive Trendlenburg Test
The scalp consists of five layers remembered by the mnemonic SCALP: skin, connective tissue, aponeurosis, loose areolar tissue, and pericranium. The dense connective tissue layer contains blood vessels and nerves. The loose areolar layer allows movement of the scalp over View Diagram Layers of the Scalp
The radial nerve provides cutaneous innervation to the posterior arm, forearm, and hand, including the dorsal aspect of the lateral three and a half fingers. Knowledge of its distribution is essential for neurologists, orthopedic surgeons, and medical students in diagnosing View Diagram Cutaneous Innervation of the Radial Nerve Upper Limb
The perineum is a diamond-shaped region located between the pubic symphysis anteriorly, coccyx posteriorly, and ischial tuberosities laterally. It contains superficial and deep structures, including muscles, nerves, and vessels associated with the urogenital and anal regions. Understanding perineal borders is View Diagram Borders of the Perineum
The tarsal tunnel is located on the medial side of the ankle, beneath the flexor retinaculum. It contains the tendons of tibialis posterior, flexor digitorum longus, posterior tibial artery, tibial nerve, and flexor hallucis longus. Compression of the tibial nerve View Diagram Contents of the Tarsal Tunnel
Dorsiflexion and plantarflexion are primary movements of the ankle joint that allow the foot to move upward and downward. This anatomy diagram of ankle dorsi and plantar movements illustrates how the talocrural joint enables controlled motion between the tibia, fibula, View Diagram Ankle Dorsi Plantar
The abdominal muscles play a vital role in breathing, particularly during forced expiration. This anatomy diagram of abdominal breathing clearly illustrates how the diaphragm works in coordination with the abdominal wall to regulate airflow. During inspiration, the diaphragm contracts and View Diagram Abdominal in Breathing
The ligaments of the lumbar spine provide stability while allowing flexibility. Major ligaments include the anterior and posterior longitudinal ligaments, ligamentum flavum, interspinous, supraspinous, and intertransverse ligaments. The anterior longitudinal ligament prevents hyperextension, while the posterior longitudinal ligament limits hyperflexion. View Diagram Ligaments of the Lumbar Spine
The fallopian tubes, also called uterine tubes, are paired structures connecting the ovaries to the uterus. They consist of four parts: infundibulum with fimbriae, ampulla, isthmus, and uterine part. These tubes facilitate ovum capture, fertilization, and transport to the uterus. View Diagram The Parts of the Fallopian Tubes
The levator costarum muscles are small muscles located in the posterior thoracic region. They extend from the transverse processes of the vertebrae to the ribs below. Their primary function is to assist in elevating the ribs during inspiration. Although relatively View Diagram Levator Costarum Muscles of the Back
Heart septation during embryology involves the formation of interatrial and interventricular septa, creating separate right and left chambers for efficient circulation. Knowledge of cardiac development is essential for pediatric cardiologists, surgeons, and medical students in managing congenital heart defects. Understanding View Diagram Septation of the Heart Embryology of the Cardiovascular System
The ankle joint consists of the tibia, fibula, and talus, forming a complex hinge that allows dorsiflexion, plantarflexion, and slight rotation. Ligaments and bony surfaces provide stability while accommodating weight-bearing movements. Knowledge of ankle bones and their articulations is crucial View Diagram Bones of the Ankle Joint Tibia Fibula and Talus
Erbs palsy, often resulting from obstetric brachial plexus injury, causes a waiters tip posture. The affected upper limb is adducted, internally rotated, and the elbow extended due to paralysis of the shoulder and arm muscles innervated by C5C6 roots. Weakness View Diagram Erbs Palsy Waiters Tip Position
The spleen is a highly vascular organ located in the left upper quadrant of the abdomen. This anatomy diagram of the anatomical position of the spleen shows its placement beneath the left hemidiaphragm, protected by the 9th to 11th ribs. View Diagram Anatomical Position of the Spleen
