Anatomy

| Term | Small definition |

| -------------------------------------- | --------------------------------------------------------- |

| Frontal bone | Bone forming the forehead and front of the skull. |

| Parietal bone | Large bone forming the upper sides and roof of the skull. |

| Parietal eminence | Rounded raised area on the parietal bone. |

| Temporal bone | Bone on the side of the skull near the ear. |

| Occipital bone | Bone forming the back and base of the skull. |

| Sphenoid bone | Skull bone near the temple and behind the eye socket. |

| Nasal bone | Small bone forming the bridge of the nose. |

| Lacrimal bone | Small bone on the inner wall of the eye socket. |

| Ethmoid bone | Bone between the eyes that helps form the nasal cavity. |

| Zygomatic bone | The cheekbone. |

| Maxilla | Upper jaw bone. |

| Mandible | Lower jaw bone. |

| Body of mandible | Horizontal main portion of the lower jaw. |

| Ramus of mandible | Vertical part of the mandible near the ear. |

| Head of mandible | Rounded top of the mandible that forms the jaw joint. |

| Mental foramen | Small opening on the front of the mandible. |

| Mental protuberance | Projection forming the chin. |

| Coronal suture | Joint between frontal and parietal bones. |

| Squamous suture | Joint between temporal and parietal bones. |

| Lambdoid suture | Joint between parietal and occipital bones. |

| Sutural bone | Small extra bone sometimes found within a skull suture. |

| Pterion | Area where four skull bones meet near the temple. |

| Superior temporal line | Upper curved ridge on the side of the skull. |

| Inferior temporal line | Lower curved ridge on the side of the skull. |

| External acoustic meatus | Opening of the ear canal in the temporal bone. |

| Mastoid process | Rounded projection behind the ear. |

| Styloid process | Thin pointed projection below the temporal bone. |

| Squamous part of temporal bone | Flat upper portion of the temporal bone. |

| Zygomatic arch | Bony arch forming the prominence of the cheek. |

| Zygomatic process of temporal bone | Temporal-bone portion of the zygomatic arch. |

| Temporal process of zygomatic bone | Zygomatic-bone portion of the zygomatic arch. |

| Term | Small definition |

| -------------------- | ----------------------------------------------------- |

| Pectoral girdle | Clavicle and scapula; attaches the arms to the trunk. |

| Clavicle | Collarbone connecting the sternum to the scapula. |

| Scapula | Shoulder blade. |

| Humerus | Bone of the upper arm. |

| Radius | Forearm bone on the thumb side. |

| Ulna | Forearm bone on the pinky side. |

| Carpals | Wrist bones. |

| Metacarpals | Bones of the palm. |

| Phalanges (hand) | Finger bones. |

| Pelvic girdle | Hip bones that connect the lower limbs to the trunk. |

| Hip bone | Bone formed by the ilium, ischium, and pubis. |

| Femur | Thigh bone; longest bone in the body. |

| Patella | Kneecap. |

| Tibia | Larger, medial shin bone. |

| Fibula | Smaller, lateral lower-leg bone. |

| Tarsals | Ankle and rear-foot bones. |

| Metatarsals | Long bones of the foot. |

| Phalanges (foot) | Toe bones. |

| Term | Small definition |

| --------------------- | ------------------------------------------------------------ |

| Acromial end | Lateral end of clavicle that meets the scapula. |

| Sternal end | Medial end of clavicle that meets the sternum. |

| Conoid tubercle | Small bump on the inferior clavicle for ligament attachment. |

| Costal tuberosity | Rough area near the sternal end for ligament attachment. |

| Term | Small definition |

| ------------------------- | ----------------------------------------------------- |

| Acromion | Large projection forming the top of the shoulder. |

| Coracoid process | Hook-shaped projection on the front of the scapula. |

| Suprascapular notch | Small notch along the superior border. |

| Superior border | Upper edge of the scapula. |

| Medial border | Edge closest to the spine. |

| Lateral border | Edge closest to the arm. |

| Superior angle | Upper medial corner of scapula. |

| Inferior angle | Bottom point of scapula. |

| Lateral angle | Thick lateral portion near the glenoid cavity. |

| Glenoid cavity | Shallow socket that receives the head of the humerus. |

| Subscapular fossa | Large depression on the anterior scapula. |

| Spine of scapula | Large ridge on the posterior scapula. |

| Supraspinous fossa | Depression above the scapular spine. |

| Infraspinous fossa | Depression below the scapular spine. |

| Supraglenoid tubercle | Small bump above the glenoid cavity. |

| Infraglenoid tubercle | Small bump below the glenoid cavity. |

| Term | Small definition |

| -------------------------- | ------------------------------------------------------------ |

| Head of humerus | Rounded proximal end that fits into the glenoid cavity. |

| Anatomical neck | Narrow groove directly around the humeral head. |

| Surgical neck | Narrow area below the tubercles. |

| Greater tubercle | Large lateral projection near the humeral head. |

| Lesser tubercle | Smaller anterior projection near the humeral head. |

| Intertubercular sulcus | Groove between the greater and lesser tubercles. |

| Shaft | Long middle portion of the humerus. |

| Deltoid tuberosity | Rough area on the shaft where the deltoid attaches. |

| Radial groove | Groove on posterior humerus for the radial nerve. |

| Lateral epicondyle | Outer projection at the distal humerus. |

| Medial epicondyle | Inner projection at the distal humerus. |

| Capitulum | Rounded lateral surface that articulates with the radius. |

| Trochlea | Medial pulley-shaped surface that articulates with the ulna. |

| Radial fossa | Anterior depression above the capitulum. |

| Coronoid fossa | Anterior depression above the trochlea. |

| Olecranon fossa | Large posterior depression that receives the ulna. |

| Term | Small definition |

| ----------------------------- | ----------------------------------------------------------------- |

| Radius | Lateral forearm bone on the thumb side. |

| Ulna | Medial forearm bone on the pinky side. |

| Head of radius | Disc-shaped proximal end of radius near the elbow. |

| Neck of radius | Narrow area just below the radial head. |

| Radial tuberosity | Rough bump below the radial neck for biceps attachment. |

| Olecranon | Large proximal projection of ulna forming the point of the elbow. |

| Trochlear notch | Large notch of ulna that articulates with humeral trochlea. |

| Coronoid process | Anterior projection below the trochlear notch. |

| Radial notch | Depression on ulna where the radius articulates. |

| Tuberosity of ulna | Rough area below the coronoid process. |

| Shaft | Long middle portion of a bone. |

| Interosseous borders | Edges of radius and ulna where the membrane attaches. |

| Interosseous membrane | Fibrous sheet connecting radius and ulna. |

| Head of ulna | Rounded distal end of the ulna near the wrist. |

| Styloid process of radius | Pointed projection at distal radius. |

| Styloid process of ulna | Pointed projection at distal ulna. |

| Ulnar notch | Distal radius depression that articulates with the ulna. |

| Proximal radioulnar joint | Joint between radius and ulna near elbow. |

| Distal radioulnar joint | Joint between radius and ulna near wrist. |

| Term | Small definition |

| --------------------- | -------------------------------------------------- |

| Pelvis | Structure formed by hip bones, sacrum, and coccyx. |

| Hip bone | Bone made from the ilium, ischium, and pubis. |

| Ilium | Large superior portion of the hip bone. |

| Ischium | Posterior-inferior portion of the hip bone. |

| Pubis | Anterior portion of the hip bone. |

| Sacrum | Triangular bone at the base of the spine. |

| Coccyx | Small tailbone below the sacrum. |

| Pelvic inlet | Superior opening into the pelvic cavity. |

| Sacroiliac joint | Joint connecting sacrum and ilium. |

| Pubic symphysis | Joint connecting the left and right pubic bones. |

| Subpubic angle | Angle formed below the pubic symphysis. |

| Ischiopubic ramus | Combined inferior pubic and ischial rami. |

| Term | Small definition |

| ----------------------------------------- | --------------------------------------------------------- |

| Iliac crest | Superior curved edge of the ilium. |

| Iliac fossa | Large smooth depression on medial ilium. |

| Ala | Broad wing-like portion of the ilium. |

| Anterior superior iliac spine (ASIS) | Upper projection at the front of the ilium. |

| Anterior inferior iliac spine (AIIS) | Projection below the ASIS. |

| Posterior superior iliac spine (PSIS) | Upper projection at the back of the ilium. |

| Posterior inferior iliac spine (PIIS) | Projection below the PSIS. |

| Anterior gluteal line | Ridge on lateral ilium for gluteal muscle attachment. |

| Posterior gluteal line | Posterior ridge for gluteal muscle attachment. |

| Inferior gluteal line | Lower ridge for gluteal muscle attachment. |

| Arcuate line | Curved ridge on medial ilium forming part of pelvic brim. |

| Auricular surface | Ear-shaped surface that articulates with the sacrum. |

| Term | Small definition |

| ------------------------- | ------------------------------------------------ |

| Body of ischium | Thick main portion of the ischium. |

| Ischial spine | Pointed projection between the sciatic notches. |

| Ischial tuberosity | Large rough area that bears weight when sitting. |

| Ramus of ischium | Branch extending toward the pubis. |

| Greater sciatic notch | Large notch above the ischial spine. |

| Lesser sciatic notch | Smaller notch below the ischial spine. |

| Term | Small definition |

| ------------------------ | --------------------------------------- |

| Body of pubis | Main central portion of the pubis. |

| Superior pubic ramus | Upper branch of the pubis. |

| Inferior pubic ramus | Lower branch of the pubis. |

| Pubic crest | Ridge along the upper pubis. |

| Pubic tubercle | Small projection on the superior pubis. |

| Pectineal line | Ridge along the superior pubic ramus. |

| Symphysial surface | Surface where the two pubic bones meet. |

| Term | Small definition |

| --------------------- | ----------------------------------------------------- |

| Acetabulum | Cup-shaped hip socket that receives the femoral head. |

| Lunate surface | Smooth articular surface inside the acetabulum. |

| Obturator foramen | Large opening formed by the pubis and ischium. |