Joints and Body Movements

Topics: Synovial joint, Joint, Bone Pages: 4 (1013 words) Published: March 15, 2014

Joints and Body Movements
Laszlo Vass, Ed.D. Version 42-0014-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Purpose:

What is the purpose of this exercise? To identify and define the structural categories of joints and joint movements, as well as discuss the function of the synovial joints in the body. To be able to describe how tearing a tendon affects the muscle it corresponds with. To describe how losing articular cartilage affects the corresponding joint, its bones and the associated muscles. Are there any safety concerns associated with this exercise? If so, list what they are and what precautions should be taken. Gown, glove, goggles, proper clean up.

exeRcise 1: Questions

A. As you observe the skull, explain how the structure of the sutures between the cranial bones is related to the overall function of the cranium. At birth, an infant’s skull has six cranial bones separated by strong, fibrous elastic sutures. These sutures are what allow the infant’s skull to squeeze through the birth canal, as they allow the cranial bones to overlap each other during the process, and then allow for brain growth and development. By 12-18 months they grow together, and remain flexible during infancy and childhood. In adulthood the cranial sutures stay together.

B. Why are synarthroses an important component of fibrous joints? Synarthroses are joints that do not move, such as the joints in the skull that never move in...
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