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Bones of the Chest (Thorax), Pelvis (Hip), and Extremities (Hand and foot): Thoracic or Chest Cavity Bones: Thoracic bones consist of Clavicle, scapula, sternum, and rib bones.  Now we will see about each of these bones one by one. 1.  Clavicle:  The other name of clavicle is collar bone.  This bone is slender in structure.  These bones are two in number and on each side of the body.  Collar bone or clavicle attach the shoulder bone to the breastbone on each side of the body. 2.  Scapula:  This is called as shoulder bone.  This bone is triangular in structure.  Scapula is on each dorsal side of the body.  Acromion is an extension of the scapular bone.  Acromion joins the shoulder to the clavicle.  Acromion means shoulder joint.  (acr/o means joint or extremity and om/o means shoulder). 3.  Sternum:   The other name of the sternum bone is breastbone.  This bone is flat in struc...

There are totally 26 bone segments compose the vertebral column or spinal column.  We can arrange these 26 bones of the vertebral column in to five divisions, such as 1.  Cervical (7) 2.  Thoracic (12) 3.  Lumbar (5) 4.  Sacral (1) 5.  Coccygeal (1) Now we will see about these one by one now.  Okay. 1. Cervical (cervix) Vertebral Bones:  These are the first set of bones in the spinal column of 26 bones.  Cervical spine bones are 7 in number.  They are called as C1, C2, C3, C4, C5, C6, and C7.  2.  Thoracic (thorax) Vertebral Bones:  This bone segment is the second set of the vertebral column.  Thoracic bones are 12 in number.  They are known to be T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, and T12.  These 12 bones attach with 12 pairs of rib bones on both sides. 3.  Lumbar (lumbar) Vertebral Bones:  These bones are 5 in number.  Lumbar bones are the third set of ...

Now we will learn about facial bones.  These bones are joined together by sutures. There are specific air cavities called sinuses located in specific spaces within the facial bone and cranial bones.  Sinuses soften the skull and gives humidity to the air passes through these bones. Nasal bones, vomer, lacrimal bones, zygomatic bones, mandibular bone, and maxillary bones. We will see about each bone one by one now.  1.  Nasal bones:  Nas/o means nose.  We can say these bones as nose bones.  These bones give support to the nasal bridge.  Nasal bones join with the frontal bone superiorly and form part of the nasal septum. 2.  Vomer:  This is a thin facial bon.  Vomer is single in number.  This bone is flat in structure.  Vomer forms the lower part of the nasal septum. 3.  Lacrimal bones:  These bones are two in number.  Lacrim/o means tear.  Lacrimal bones are situated on each side of...