Bios251 Week 7 Lab

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BIOS251 Week 7 Lab Exercise


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Module: Support and Movement Activity: Anatomy Overviews Title: Joints

1. a. From the main Joints page, click Fibrous Joints and identify each of the following structural joint types.




Suture Syndesmoses Gomphosis

b. Why are sutures and gomphoses classified as synarthroses?

In these types of joints the fibers are very short and allow for little of no movement. Synarthroses joints come together at a point at which adjacent bones are bound by collagen fibers that emerge from
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Locate body examples of the following joints and describe the movement of each.

Condyloid - joint between radius and scaphoid and lunate bones of carpus. Planar – joints between intercarpal joints. Between carpal bones at the wrist.

Saddle - joint between the trapezium of carpus and metacarpal of thumb.

Biaxial (Condyloid) triaxial (Plane Joint) Biaxial (Saddle Joint) Movement on two axis Movement on three axis Movement on two axis

These types of joints are considered plane joints because they permit back-and-forth and side-to-side movements between the flat surfaces of the bones, but they may also rotate against one another.

Pivot – The rounded pointed surface of one bone articulates with a ring formed partly by another bone and partly by a ligament. This type of joint allows rotation only around its own longitudinal axis.

Uniaxial Joint between head and radius notch of ulna.

Hinge The convex surface of one bone fits into the concave surface of another bone, Hinge joint are uniaxial because they allow motion around a single axis. Produces an opening and closing motion.

Identify the trochlea and the trochlear notch.

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