Download presentation
Presentation is loading. Please wait.
Published byMolly Jemimah Skinner Modified over 8 years ago
2
Skeletal System Unit 4
3
Skeletal System Functions A.Protection* B.Support* C.Movement D.Calcium Store E.Make Blood *Not possible without Calcium, bones would be too brittle!
4
Tiny Tidbits There are 206 bones in the body Largest bone is the femur (thigh bone) Smallest bones in the ear o Incus o Malleus o Stapes Marrow: creates blood stem cells that make all formed units in the blood (in the core of long bones) Suture: type of joint that only occurs in the skull o Unfused at birth (“soft spots”), allows for some movement
6
Bone Marrow Location and Donation
7
Sutures Infant to Adult
8
4 Types of Bones in the Body Long-longer than wide Ex: Arm/Leg Short- Roughly cube shaped Ex: Tarsals/Metatarsals Flat –thin, generally curved Ex: Sternum/Ribs Irregular-complicated shape, specified for fxn Ex: Skull/Vertebrae
10
Short Bones
11
Flat Bone = Sternum
12
Irregular Bones
13
Bone Structure Epiphysis : rounded end of a long bone Diaphysis : long midsection of a long bone Haversian Canal : series of tubes that surround blood vessels and nerves in compact bone *Bone Structure Info
14
Haversian Canals
15
Histology-Bone Slide
17
Axial Skeleton: consists of head and trunk, total of 80 bones Appendicular Skeleton: used for locomotion and manipulation of objects, 126 bones
19
Pelvic Girdle
20
Pelvis with Ligaments
21
Skull/Cranium
23
Bones and Age Cells in the bones will continually break down and create new bone as we age and our bodies change. “Remodeling” of bones is meant to resist fractures as we age, but also can lead to osteoporosis over time with poor nutrition Video TERMS o Osteoclast o Osteoblast o Osteocyte
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.