explain all 206 bones in human .
name the bone
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The cervical vertebrae (7)The thoracic vertebrae (12)The lumbar vertebrae (5)The sacral vertebrae (5 at birth, later fused into one)The coccygeal vertebrae (5 at birth, some or all of the bones fuse together but there seems to be a disagreement between researchers as to what the most common number should be. Some say the most common is 1, others say 2 or 3, with 4 being the least likely. It is counted as 1 in this article.[citation needed])
Chest (thorax)Edit
There are usually 25 bones in the chest but sometimes there can be additional cervical ribs in humans. Cervical ribs occur naturally in other animals such as reptiles.
The sternum (1)The ribs (24, in 12 pairs)It is important to note that three pairs (the 8th, 9th and 10th), also known as false ribs, are attached to each other. They are also attached to the 7th rib by cartilage and synovial joints. Also two pairs of floating ribs (the 11th and 12th), have no anterior attachment.Cervical ribs are extra ribs that occur in some humans.
Skull (cranium and mandible)Edit
There are 22 bones in the skull. Including the hyoid and the bones of the middle ear, the head contains 29 bones.
The cranial bones (8)The occipital boneThe parietal bones (2)The frontal boneThe temporal bones (2)The sphenoid bone (sometimes counted as facial)The ethmoid bone (sometimes counted as facial)The facial bones (14)The nasal bones (2)The maxillae (upper jaw) (2)The lacrimal bone (2)The zygomatic bone or cheekbone (2);The palatine bone (2)The inferior nasal concha (2)The vomerThe mandible (lower jaw)The hyoid bone (not connected to any other bone)In the middle ears (6)malleus (2)incus (2)stapes (2)
ArmEdit
There are a total of 64 bones in the arm.
The upper arm bones (6 bones, 3 on each side)The humerusThe shoulder (pectoral girdle)The scapulaThe claviclesThe lower arm bones (4 bones, 2 on each side)The ulnaThe radiusThe hand (54 bones, 27 in each hand)The carpalsscaphoid bone (2)lunate bone (2)triquetral bone (2)pisiform bone (2)trapezium (2)trapezoid bone (2)capitate bone (2)hamate bone (2)The metacarpals (5 × 2 = 10)The phalanges of the handproximal phalanges (5 × 2 = 10)intermediate phalanges (4 × 2 = 8)distal phalanges (5 × 2 = 10)
Pelvis (pelvic girdle)Edit
The hip bone has three regions: ilium, ischium, and pubis (2)
The sacrum and the coccyx attach to the two hip bones to form the pelvis, but are more important to the spinal column. For this reason it is omitted from the pelvic girdle.
LegEdit
The femur (2)The patella or kneecap (2)The tibia (2)The fibula (2)The foot (52 bones in total, 26 per foot)The tarsuscalcaneus or heel bone (2)talus (2)navicular bone (2)medial cuneiform bone (2)intermediate cuneiform bone (2)lateral cuneiform bone (2)cuboid bone (2)The metatarsals (10)The phalanges of the footproximal phalanges (5 × 2 = 10)intermediate phalanges (4 x 2 = 8)distal phalanges (5 x 2 = 10)
Sesamoid bonesEdit
PatellaPisiform boneFabellaSesamoids in the first and secondmetacarpal bonesSesamoids in the first metatarsal boneLenticular process of the incus
Chest (thorax)Edit
There are usually 25 bones in the chest but sometimes there can be additional cervical ribs in humans. Cervical ribs occur naturally in other animals such as reptiles.
The sternum (1)The ribs (24, in 12 pairs)It is important to note that three pairs (the 8th, 9th and 10th), also known as false ribs, are attached to each other. They are also attached to the 7th rib by cartilage and synovial joints. Also two pairs of floating ribs (the 11th and 12th), have no anterior attachment.Cervical ribs are extra ribs that occur in some humans.
Skull (cranium and mandible)Edit
There are 22 bones in the skull. Including the hyoid and the bones of the middle ear, the head contains 29 bones.
The cranial bones (8)The occipital boneThe parietal bones (2)The frontal boneThe temporal bones (2)The sphenoid bone (sometimes counted as facial)The ethmoid bone (sometimes counted as facial)The facial bones (14)The nasal bones (2)The maxillae (upper jaw) (2)The lacrimal bone (2)The zygomatic bone or cheekbone (2);The palatine bone (2)The inferior nasal concha (2)The vomerThe mandible (lower jaw)The hyoid bone (not connected to any other bone)In the middle ears (6)malleus (2)incus (2)stapes (2)
ArmEdit
There are a total of 64 bones in the arm.
The upper arm bones (6 bones, 3 on each side)The humerusThe shoulder (pectoral girdle)The scapulaThe claviclesThe lower arm bones (4 bones, 2 on each side)The ulnaThe radiusThe hand (54 bones, 27 in each hand)The carpalsscaphoid bone (2)lunate bone (2)triquetral bone (2)pisiform bone (2)trapezium (2)trapezoid bone (2)capitate bone (2)hamate bone (2)The metacarpals (5 × 2 = 10)The phalanges of the handproximal phalanges (5 × 2 = 10)intermediate phalanges (4 × 2 = 8)distal phalanges (5 × 2 = 10)
Pelvis (pelvic girdle)Edit
The hip bone has three regions: ilium, ischium, and pubis (2)
The sacrum and the coccyx attach to the two hip bones to form the pelvis, but are more important to the spinal column. For this reason it is omitted from the pelvic girdle.
LegEdit
The femur (2)The patella or kneecap (2)The tibia (2)The fibula (2)The foot (52 bones in total, 26 per foot)The tarsuscalcaneus or heel bone (2)talus (2)navicular bone (2)medial cuneiform bone (2)intermediate cuneiform bone (2)lateral cuneiform bone (2)cuboid bone (2)The metatarsals (10)The phalanges of the footproximal phalanges (5 × 2 = 10)intermediate phalanges (4 x 2 = 8)distal phalanges (5 x 2 = 10)
Sesamoid bonesEdit
PatellaPisiform boneFabellaSesamoids in the first and secondmetacarpal bonesSesamoids in the first metatarsal boneLenticular process of the incus
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