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Bone

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Bones are rigid organs that form part of the endoskeleton of vertebrates; only human bones are currently included in this type. Structures that are a part of a bone are also included here. more

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Incus Anatomical structure
The incus or anvil is the anvil-shaped small bone or ossicle in themiddle ear. It connects the malleus to the stapes. It was first described by Alessandro Achillin of Bologna. The incus transmits sound vibrations from the malleus to the stapes. ...
Malleus Anatomical structure
The malleus or hammer is a hammer-shaped small bone or ossicle of the middle ear which connects with the incus and is attached to the inner surface of the eardrum. The word is Latin for hammer. It transmits the sound vibrations from the eardrum to...
Stapes Anatomical structure
The stapes or stirrup is the stirrup-shaped small bone or ossicle in themiddle ear which attaches the incus to the fenestra ovalis, the "oval window" which is adjacent to the vestibule of the inner ear. It is the smallest and lightest bone in the...
Femur Gray's Anatomy illustration of a human femur Anatomical structure
The femur is the thigh bone. In humans, it is the longest, most voluminous, and strongest bone. The average human femur is 48 centimeters (19 in) in length and 2.34 cm (0.92 in) in diameter and can support up to 30 times the weight of an adult. It...
Acetabulum Anatomical structure
The acetabulum is a concave surface of the pelvis. The head of the femur meets with the pelvis at the acetabulum, forming the hip joint. There are three bones of the os coxae (hip bone) that come together to form the acetabulum. Contributing a...
Scapula Anatomical structure
In anatomy, the scapula, omo, or shoulder blade, is the bone that connects the humerus (arm bone) with the clavicle (collar bone). The scapula forms the posterior part of the shoulder girdle. In human, it is a flat bone, roughly triangular in shape...
Sacrum Anatomical structure
The sacrum is a large, triangular bone at the base of the spine and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones. Its upper part connects with the last lumbar vertebra, and bottom part...
Maxilla Anatomical structure
The maxilla (plural: maxillae) is a fusion of two bones along the palatal fissure that form the upper jaw. This is similar to the mandible, which is also a fusion of two halves at the mental symphysis. The alveolar process of the maxilla holds the...
Mandible Anatomical structure
The mandible (from Latin mandibula, "jawbone") or inferior maxillary bone forms the lower jaw and holds the lower teeth in place. The mandible consists of: Inferior alveolar nerve, branch of the mandibular division of Trigeminal (V) nerve, enters...
Trapezoid bone Anatomical structure
The trapezoid bone (lesser multangular bone) is a carpal bone in tetrapod, including humans. It is the smallest bone in the distal row. It may be known by its wedge-shaped form, the broad end of the wedge constituting the dorsal, the narrow end the...
Trapezium Anatomical structure
The trapezium bone (greater multangular bone) is a carpal bone, in what is commonly referred to as the wrist. The trapezium is distinguished by a deep groove on its palmar surface. It is situated at the radial side of the carpus, between the...
Tibia Plan of ossification of the tibia. From three centers Anatomical structure
The tibia, shinbone, or shankbone is the larger and stronger of the two bone in the leg below the knee in vertebrates and connects the knee with the ankle bones. The tibia is found medial and anterior to the fibula. It is the second-longest bone in...
Hyoid bone Anatomical structure
The hyoid bone (lingual bone) (Latin os hyoideum) is a bone in the neck, and is the only bone in the human skeleton not articulated to any other bone. It is supported by the muscle of the neck and in turn supports the root of the tongue. The hyoid...
Zygomatic bone Anatomical structure
The zygomatic bone came from the latin tearm zyosislymore meaning malar bone (comonly called "cheeck bone") (malar bone) is a paired bone of the human skull. It articulates with the maxilla, the temporal bone, the sphenoid bone and the frontal bone....
Sternum Anatomical structure
The sternum (from Greek στέρνον, sternon, "chest" or breastbone) is a long, flat bone located in the center of the thorax (chest). It connects to the rib bones via cartilage, forming the rib cage with them, and thus helps to protect the lungs, heart...
Patella Knee diagram Anatomical structure
The patella or kneecap is a thick, triangular bone which articulates with the femur and covers and protects the knee joint. It is the largest sesamoid bone in the human body. It is attached to the tendon of the quadriceps femoris muscle, which...
Ethmoid bone Anatomical structure
The ethmoid bone (from Greek ethmos, "sieve") is a bone in the skull that separates the nasal cavity from the brain. As such, it is located at the roof of the nose, between the two orbit. The cubical bone is lightweight due to a spongy construction....
Sphenoid bone Anatomical structure
The sphenoid bone (from Greek sphenoeides, "wedgelike") is a bone situated at the base of the skull in front of the temporals and basilar part of the occipital bone. The sphenoid bone somewhat resembles a butterfly or bat with its wings extended. ...
Occipital bone Anatomical structure
The occipital bone, a saucer-shaped membrane bone situated at the back and lower part of the cranium, is trapezoid in shape and curved on itself. It is pierced by a large oval aperture, the foramen magnum, through which the cranial cavity...
Frontal bone Anatomical structure
The frontal bone is a bone in the human skull that resembles a cockleshell in form, and consists of two portions: The border of the squama frontalis is thick, strongly serrated, bevelled at the expense of the inner table above, where it rests upon...
Temporal bone Anatomical structure
The temporal bones are situated at the sides and base of the skull. The temporal bone supports that part of the face known as the temple. Each consists of five parts: The structure of the squama is like that of the other cranial bones: the...
Nasal bone Anatomical structure
The nasal bones are two small oblong bone, varying in size and form in different individuals; they are placed side by side at the middle and upper part of the face, and form, by their junction, "the bridge" of the nose. Each has two surfaces and...
Inferior nasal conchae Anatomical structure
The inferior nasal concha (Inferior Turbinated Bone) is one of the turbinate in the nose. It extends horizontally along the lateral wall of the nasal cavity [Fig. 1] and consists of a lamina of spongy bone, curled upon itself like a scroll. Each...
Fibula Anatomical structure
The fibula or calf bone is a bone located on the lateral side of the tibia, with which it is connected above and below. It is the smaller of the two bones, and, in proportion to its length, the most slender of all the long bones. Its upper extremity...
Metatarsus Anatomical structure
The metatarsus consists of the five long bone of the foot, which are numbered from the medial side (ossa metatarsalia I.-V.); each presents for examination a body and two extremities. These are analogous to the metacarpal of the hand. Specifically,...
Metacarpus Anatomical structure
The metacarpus is the intermediate part of the hand skeleton that is located between the phalanges (bones of the fingers) distal and the carpus which forms the connection to the forearm. The metacarpus consists of metacarpal bones. Each consists of...
Scaphoid bone Anatomical structure
The scaphoid bone (hand navicular) of the wrist is found on the thumb side of the hand, within the anatomical snuffbox. It is known as the "navicular" in older texts, from its fancied resemblance to a boat. In modern usage, when used without...
Capitate bone Anatomical structure
The capitate bone is a bone in the human hand. The capitate bone is the largest of the carpal bones, and occupies the center of the wrist. It presents, above, a rounded portion or head, which is received into the concavity formed by the scaphoid and...
Hamate bone Anatomical structure
The hamate bone (unciform bone) is a bone in the human hand that may be readily distinguished by its wedge-shaped form, and the hook-like process which projects from its volar surface. It is situated at the medial and lower angle of the carpus, with...
Lunate bone Anatomical structure
The lunate bone (semilunar bone) is a carpal bone (wrist bone) in the human hand that may be distinguished by its deep concavity and crescentic outline. It is situated in the center of the proximal row of the carpus, or wrist, between the scaphoid...