Appendicular Skeleton Prelab

Osteology – Appendicular Skeleton

The purpose of today’s lab is to be able to describe the difference between the axial and appendicular skeletons, learn what bones belong to axial and what bones belong to appendicular skeletons. Also we are going to learn and will be able to identify the bones of arms and legs as well as the bones of pectoral and pelvic griddles. We will discuss the differences between the spongy and compact bones and learn and recognize parts of the long bones.

1. Key Concepts:

a. Describe how the structure of a bone/bony structure relates to its structure.  For example,

why would a bone have a raised projection such as a tuberosity on it?

b.  Compare and contrast spongy bone and compact bone in terms of structure and function.

c. Identify the difference between the axial and the appendicular skeletons, and give examples

of each category

Spongy and compact bone

Compact bones are known as cortical bones, spongy bones are known as cancellous bones.

Compact bones are made of osteons (Haversian Systems- rod-like things. osteons also contain Haversian canals. “These canals contain and carry blood vessels, lymphatic vessels, and branches of the nerves.”), spongy bones are made of trabeculae (thin threads).

Compact bones are tough and heavy, spongy bones are light.

Compact bones - outer layer of most bones, spongy bones – inner layer of the bones. (15)...