List of bones of the human skeleton
Encyclopedia
A typical adult
human skeleton
consists of 206 bones. Anatomical variation may also result in the formation of more or fewer bones. More common variations include cervical rib
s or an additional lumbar vertebra
.
Cranial (8):
Facial bones (14):
In the middle ear
s (6):
In the throat
(1):
In the shoulder
girdle (4):
In the thorax (25):
In the vertebral column
(24):
In the arm
s (2):
In the forearm
s (4):
In the hand
s (54):
In the pelvis (7):
In the thigh
s (2):
In the leg
s (6):
In the feet (52):
Adult
An adult is a human being or living organism that is of relatively mature age, typically associated with sexual maturity and the attainment of reproductive age....
human skeleton
Human skeleton
The human skeleton consists of both fused and individual bones supported and supplemented by ligaments, tendons, muscles and cartilage. It serves as a scaffold which supports organs, anchors muscles, and protects organs such as the brain, lungs and heart....
consists of 206 bones. Anatomical variation may also result in the formation of more or fewer bones. More common variations include cervical rib
Cervical rib
A cervical rib is a supernumerary rib which arises from the seventh cervical vertebra. It is a congenital abnormality located above the normal first rib. A cervical rib is present in only about 1 in 500 of people; in even rarer cases, an individual may have two cervical ribs...
s or an additional lumbar vertebra
Lumbar vertebrae
The lumbar vertebrae are the largest segments of the movable part of the vertebral column, and are characterized by the absence of the foramen transversarium within the transverse process, and by the absence of facets on the sides of the body...
.
Cranial (8):
- frontal boneFrontal boneThe frontal bone is a bone in the human skull that resembles a cockleshell in form, and consists of two portions:* a vertical portion, the squama frontalis, corresponding with the region of the forehead....
- parietal boneParietal boneThe parietal bones are bones in the human skull which, when joined together, form the sides and roof of the cranium. Each bone is roughly quadrilateral in form, and has two surfaces, four borders, and four angles. It is named from the Latin pariet-, wall....
(2) - temporal boneTemporal boneThe temporal bones are situated at the sides and base of the skull, and lateral to the temporal lobes of the cerebrum.The temporal bone supports that part of the face known as the temple.-Parts:The temporal bone consists of four parts:* Squama temporalis...
(2) - occipital boneOccipital boneThe occipital bone, a saucer-shaped membrane bone situated at the back and lower part of the cranium, is trapezoidal in shape and curved on itself...
- sphenoid boneSphenoid boneThe sphenoid bone is an unpaired bone situated at the base of the skull in front of the temporal bone and basilar part of the occipital bone.The sphenoid bone is one of the seven bones that articulate to form the orbit...
- ethmoid boneEthmoid boneThe ethmoid bone 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 orbits. The cubical bone is lightweight due to a spongy construction. The ethmoid bone is one of the bones that makes up the orbit of the eye...
Facial bones (14):
- mandible
- maxillaMaxillaThe maxilla 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. Sometimes The maxilla (plural: maxillae) is a fusion of two bones along the palatal fissure that form the upper...
(2) - palatine bonePalatine boneThe palatine bone is a bone in many species of the animal kingdom, commonly termed the palatum .-Human anatomy:...
(2) - zygomatic boneZygomatic boneThe zygomatic bone is a paired bone of the human skull. It articulates with the maxilla, the temporal bone, the sphenoid bone and the frontal bone. The zygomatic is homologous to the jugal bone of other tetrapods...
(2) - nasal boneNasal boneThe nasal bones are two small oblong bones, 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 four borders....
(2) - lacrimal boneLacrimal boneThe lacrimal bone, the smallest and most fragile bone of the face, is situated at the front part of the medial wall of the orbit. It has two surfaces and four borders.-Lateral or orbital surface:...
(2) - vomer bone
- inferior nasal conchaeInferior nasal conchaeThe inferior nasal concha is one of the turbinates 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...
(2)
In the middle ear
Middle ear
The middle ear is the portion of the ear internal to the eardrum, and external to the oval window of the cochlea. The mammalian middle ear contains three ossicles, which couple vibration of the eardrum into waves in the fluid and membranes of the inner ear. The hollow space of the middle ear has...
s (6):
- malleusMalleusThe 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...
(2) - incusIncusThe 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 Achillini of Bologna.The incus transmits sound vibrations from the malleus to the stapes....
(2) - stapes (2)
In the throat
Throat
In vertebrate anatomy, the throat is the anterior part of the neck, in front of the vertebral column. It consists of the pharynx and larynx...
(1):
- hyoid boneHyoid boneThe hyoid bone is a horseshoe-shaped bone situated in the anterior midline of the neck between the chin and the thyroid cartilage. At rest, it lies at the level of the base of the mandible in the front and the third cervical vertebra behind.Unlike other bones, the hyoid is only distantly...
In the shoulder
Shoulder
The human shoulder is made up of three bones: the clavicle , the scapula , and the humerus as well as associated muscles, ligaments and tendons. The articulations between the bones of the shoulder make up the shoulder joints. The major joint of the shoulder is the glenohumeral joint, which...
girdle (4):
- scapulaScapulaIn anatomy, the scapula , omo, or shoulder blade, is the bone that connects the humerus with the clavicle ....
or shoulder blade (2) - clavicleClavicleIn human anatomy, the clavicle or collar bone is a long bone of short length that serves as a strut between the scapula and the sternum. It is the only long bone in body that lies horizontally...
or collarbone (2)
In the thorax (25):
- sternum (1)
- Can be considered as three bones; manubriumManubriumThe manubrium or manubrium sterni is the broad, upper part of the sternum. Located ventrally with a quadrangular shape, wider superiorly and narrower inferiorly, it articulates with the clavicles and the first two ribs.-Borders:The superior border is the thickest and presents at its center the...
, body of sternumBody of sternumThe body of the sternum , considerably lengthier, narrower, and thinner than the manubrium, attains its greatest breadth close to the lower end.- Surfaces :...
(gladiolus), and xiphoid processXiphoid processThe xiphoid process, or xiphisternum or metasternum, is a small cartilaginous process of the lower part of the sternum which is usually ossified in the adult human. By age 15 to 29, the xiphoid usually fuses to the body of the sternum with a fibrous joint. Unlike the synovial articulation of major...
- Can be considered as three bones; manubrium
- ribHuman rib cage-See also:*Terms for bones*Terms for anatomical location*Articulation of head of rib-References:* Clinically Oriented Anatomy, 4th ed. Keith L. Moore and Robert F. Dalley. pp. 62–64...
s (2 x 12)
In the vertebral column
Vertebral column
In human anatomy, the vertebral column is a column usually consisting of 24 articulating vertebrae, and 9 fused vertebrae in the sacrum and the coccyx. It is situated in the dorsal aspect of the torso, separated by intervertebral discs...
(24):
- cervical vertebraeCervical vertebraeIn vertebrates, cervical vertebrae are those vertebrae immediately inferior to the skull.Thoracic vertebrae in all mammalian species are defined as those vertebrae that also carry a pair of ribs, and lie caudal to the cervical vertebrae. Further caudally follow the lumbar vertebrae, which also...
(7) - thoracic vertebraeThoracic vertebraeIn human anatomy, twelve thoracic vertebrae compose the middle segment of the vertebral column, between the cervical vertebrae and the lumbar vertebrae. They are intermediate in size between those of the cervical and lumbar regions; they increase in size as one proceeds down the spine, the upper...
(12) - lumbar vertebraeLumbar vertebraeThe lumbar vertebrae are the largest segments of the movable part of the vertebral column, and are characterized by the absence of the foramen transversarium within the transverse process, and by the absence of facets on the sides of the body...
(5)
In the arm
Arm
In human anatomy, the arm is the part of the upper limb between the shoulder and the elbow joints. In other animals, the term arm can also be used for analogous structures, such as one of the paired forelimbs of a four-legged animal or the arms of cephalopods...
s (2):
- HumerusHumerusThe humerus is a long bone in the arm or forelimb that runs from the shoulder to the elbow....
(2)
In the forearm
Forearm
-See also:*Forearm flexors*Forearm muscles...
s (4):
- radiusRadius (bone)The radius is one of the two large bones of the forearm, the other being the ulna. It extends from the lateral side of the elbow to the thumb side of the wrist and runs parallel to the ulna, which exceeds it in length and size. It is a long bone, prism-shaped and slightly curved longitudinally...
(2) - ulnaUlnaThe ulna is one of the two long bones in the forearm, the other being the radius. It is prismatic in form and runs parallel to the radius, which is shorter and smaller. In anatomical position The ulna is one of the two long bones in the forearm, the other being the radius. It is prismatic in form...
(2)
In the hand
Hand
A hand is a prehensile, multi-fingered extremity located at the end of an arm or forelimb of primates such as humans, chimpanzees, monkeys, and lemurs...
s (54):
- Carpal (wrist) bones:
- scaphoid boneScaphoid boneThe scaphoid bone is one of the carpal bones of the wrist. It is situated between the hand and forearm on the thumb-side of the wrist . The scaphoid bone is the largest bone of the proximal row of wrist bones, its long axis being from above downward, lateralward, and forward...
(2) - lunate boneLunate boneThe lunate bone is a carpal 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 region between the fore arm and hand...
(2) - triquetrum bone (2)
- pisiform bonePisiform boneThe pisiform bone is a small knobbly, pea-shaped wrist bone.The pisiform bone is found in the proximal row of the carpus. It is located where the ulna joins the carpus...
(2) - trapeziumTrapezium (bone)The trapezium bone is a carpal bone in 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 scaphoid and the first metacarpal bone...
(2) - trapezoid boneTrapezoid boneThe trapezoid bone is a carpal bone in tetrapods, 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 palmar surface; and by its having four articular facets touching each...
(2) - capitate bone (2)
- hamate boneHamate boneThe hamate 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 its base downward, resting on the fourth and fifth metacarpal...
(2)
- scaphoid bone
- Metacarpus (palm) bones:
- metacarpal bones (5 × 2)
- Digits of the hands (finger bones or phalanges):
- proximal phalangesProximal phalangesProximal phalanges are bones found in the limbs of most vertebrates. In humans, they are the bones at the base of a toe or finger, the prominent, knobby ends of which are often called the knuckles....
(5 × 2) - intermediate phalangesIntermediate phalangesIntermediate phalanges are bones found in the limbs of most vertebrates. In humans, they are the bones of the finger and toe which lie in the middle, between the two wrinkly joints. The thumb and big toe do not have intermediate phalanges...
(4 × 2) - distal phalangesDistal phalangesThe distal or terminal phalanges are the terminal limb bones located at the tip of the digits...
(5 × 2)
- proximal phalanges
In the pelvis (7):
- sacrumSacrumIn vertebrate anatomy 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 with the coccyx...
- coccyxCoccyxThe coccyx , commonly referred to as the tailbone, is the final segment of the vertebral column. Comprising three to five separate or fused vertebrae below the sacrum, it is attached to the sacrum by a fibrocartilaginous joint, the sacrococcygeal symphysis, which permits limited movement between...
or tailbone - os coxae (innominate bone or hip bone) (2)
- Illium
- Ischium
- pubisPubisPubis may refer to:* Pubis * Mons pubis, a padding of fat that protects the pubis bone...
In the thigh
Thigh
In humans the thigh is the area between the pelvis and the knee. Anatomically, it is part of the lower limb.The single bone in the thigh is called the femur...
s (2):
- femurFemurThe femur , or thigh bone, is the most proximal bone of the leg in tetrapod vertebrates capable of walking or jumping, such as most land mammals, birds, many reptiles such as lizards, and amphibians such as frogs. In vertebrates with four legs such as dogs and horses, the femur is found only in...
(2)
In the leg
Human leg
The human leg is the entire lower extremity or limb of the human body, including the foot, thigh and even the hip or gluteal region; however, the precise definition in human anatomy refers only to the section of the lower limb extending from the knee to the ankle.Legs are used for standing,...
s (6):
- patella (2)
- tibiaTibiaThe tibia , shinbone, or shankbone is the larger and stronger of the two bones in the leg below the knee in vertebrates , and connects the knee with the ankle bones....
(2) - fibula (2)
In the feet (52):
- TarsalTarsus (skeleton)In tetrapods, the tarsus is a cluster of articulating bones in each foot situated between the lower end of tibia and fibula of the lower leg and the metatarsus. In the foot the tarsus articulates with the bones of the metatarsus, which in turn articulate with the bones of the individual toes...
(ankle) bones:- calcaneus (heel bone) (2)
- talusTalus bone-External links:* *...
(2) - navicular boneNavicular boneThe navicular bone is a small bone found in the feet of both humans and horses.- Human anatomy :The navicular bone is one of the tarsal bones, found in the foot. Its name derives from the bone's resemblance to a small boat, caused by the strongly concave proximal articular surface...
(2) - medial cuneiform boneCuneiform (anatomy)There are three cuneiform bones in the human foot:* the medial cuneiform* the intermediate cuneiform also known as the middle* the lateral cuneiform...
(2) - intermediate cuneiform boneCuneiform (anatomy)There are three cuneiform bones in the human foot:* the medial cuneiform* the intermediate cuneiform also known as the middle* the lateral cuneiform...
(2) - lateral cuneiform boneCuneiform (anatomy)There are three cuneiform bones in the human foot:* the medial cuneiform* the intermediate cuneiform also known as the middle* the lateral cuneiform...
(2) - cuboid bone (2)
- MetatarsusMetatarsusThe metatarsus or metatarsal bones are a group of five long bones in the foot located between the tarsal bones of the hind- and mid-foot and the phalanges of the toes. Lacking individual names, the metatarsal bones are numbered from the medial side : the first, second, third, fourth, and fifth...
bones:- metatarsal bone (5 × 2)
- Digits of the feet (toe bones or phalanges):
- proximal phalangesProximal phalangesProximal phalanges are bones found in the limbs of most vertebrates. In humans, they are the bones at the base of a toe or finger, the prominent, knobby ends of which are often called the knuckles....
(5 × 2) - intermediate phalangesIntermediate phalangesIntermediate phalanges are bones found in the limbs of most vertebrates. In humans, they are the bones of the finger and toe which lie in the middle, between the two wrinkly joints. The thumb and big toe do not have intermediate phalanges...
(4 × 2) - distal phalangesDistal phalangesThe distal or terminal phalanges are the terminal limb bones located at the tip of the digits...
(5 × 2)
- proximal phalanges