Download
1 / 19
190 likes | 333 Vues
The Skeletal System. The Fetal Skull. The fetal skull is large compared to the infant’s total body length Fontanels—fibrous membranes connecting the cranial bones Allow the brain to grow Convert to bone within 24 months after birth. The Fetal Skull. Figure 5.13a. The Fetal Skull.
E N D
The Fetal Skull • The fetal skull is large compared to the infant’s total body length • Fontanels—fibrous membranes connecting the cranial bones • Allow the brain to grow • Convert to bone within 24 months after birth
The Fetal Skull Figure 5.13a
The Fetal Skull Figure 5.13b
The Vertebral Column • Each vertebrae is given a name according to its location • There are 24 single vertebral bones separated by intervertebraldiscs
The Vertebral Column • Nine vertebrae fuse to form two composite bones
The Vertebral Column Figure 5.14
The Vertebral Column • The spine has a normal curvature • Primary curvatures are the spinal curvatures of the thoracic and sacral regions • Secondary curvatures are the spinal curvatures of the cervical and lumbar regions
The Vertebral Column Figure 5.15
The Vertebral Column Figure 5.16
A Typical Vertebrae, Superior View Figure 5.17
Regional Characteristics of Vertebrae Figure 5.18a
Regional Characteristics of Vertebrae Figure 5.18b
Regional Characteristics of Vertebrae Figure 5.18c
Regional Characteristics of Vertebrae Figure 5.18d
Sacrum and Coccyx • Sacrum • Coccyx
Sacrum and Coccyx Figure 5.19
The Bony Thorax • Forms a cage to protect major organs • Consists of three parts
The Bony Thorax Figure 5.20a
