1 / 14

Skeletal System

Skeletal System . Skeleton System. The skeletal system is broken into 2 categories Axial Skull Ribs Sternum Vertebral column Appendicular Upper extremity Lower extremity. Skull. Made up 0f 22 bones 8 bones fused together make the cranium Frontal Parietal Temporal Occipital

pekelo
Download Presentation

Skeletal System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Skeletal System

  2. Skeleton System • The skeletal system is broken into 2 categories • Axial • Skull • Ribs • Sternum • Vertebral column • Appendicular • Upper extremity • Lower extremity

  3. Skull • Made up 0f 22 bones • 8 bones fused together make the cranium • Frontal • Parietal • Temporal • Occipital • 14 bones make up the face • Mandible • Maxilla • Zygomatic • Nasal bones • Only joint that moves in the skull is the temporomandibular joint • mandible forms a hinge with temporal bone

  4. Ribs • Purpose of the ribs are to protect the heart and lungs • There are 12 pairs of ribs • 1-7: True ribs • 8-12: False ribs • 11-12: Floating ribs • Sternum • Also called the “breastbone” • Sometimes used as a painful stimulus • 3 parts • Manubrium • Articulates with clavicle • Body • Articulates with ribs 2-7 • Xiphoid process • Attachment for rectus abdominis • Also a landmark for CPR

  5. Vertebral Column • Spinal Column or vertebral column stretches from the base of skull to coccyx • Composed of bones called vertebrae • Intervertebral disks separate body of each vertebrae • Vertebrae has ligaments in front and back to help keep column together • Each vertebrae has 3 parts • Body • Spinous Process • Vertebral foramen • Holds spinal cord

  6. Sections of the Vertebral Column • There are 5 sections to the vertebral column • 7 Cervical vertebrae • Smallest vertebra • 12 Thoracic vertebrae • Articulate with the ribs • 5 Lumbar vertebrae • Supports most of the body’s weight • Sacrum • Composed of 5 fused vertebrae • Coccyx • Composed 4 fused bones • Also called the “tail bone”

  7. Shoulder Girdle • Consists of 2 bones • Scapula • Also called the shoulder blade • Free floating bone between ribs 2 & 7 posteriorly • Clavicle • Also called the collar bone • Attaches to axial skeleton

  8. Arm • Humerus • Long bone located in the upper arm • Forearm (2 bones) • Radius • Lateral long bone in the forearm • Ulna • Medial long bone in the forearm

  9. Hand • There are 27 bones that make up the hand • Carpals • 8 small bones that make up the wrist • Metacarpals • 5 long bones that make up the palm • Named according to their position in the hand • Ex. 1st metacarpal is thumb, 5th is little finger • Phalanges • 14 bones that make up the fingers • Also called digits • Each finger has 3 bones • Each thumb has 2

  10. Pelvic Girdle • Consists of 3 bones • Attaches lower limb to axial skeleton • Transmits weight of upper body to lower limb • Supports pelvic bones • 3 main bones • Ilium • Largest part of pelvic girdle • Ischium • Located posteriorly • Called “sit bones” • Pubis • Located anteriorly • Come together to form pelvis

  11. Leg • Consists of 4 bones • Femur • Longest and strongest bone in the body • Built for stability, not flexibility • Patella • Also called knee cap • Tibia • Long bone on the medial aspect of leg • 90% weight bearing • Fibula • Long bone on the lateral aspect of leg • 10% weight bearing

  12. Foot • Consists of 26 bones • Tarsals • 7 bones that make up the ankle • Metatarsals • 5 long bones of the foot • Name according to their position in the foot • Phalanges • 14 bones that make up phalanges • Each toe contains 3 • Each toe contains 2

More Related