Directions: Please complete this pre - session assignment and bring it with you

Question

Directions: Please complete this pre - session assignment and bring it with you to your recitation o receive full credit. There may be information covered here that has not yet been cove red in ecture. You are expected to use your book and other resources to find thecorrect answer. 1. Describe the three types of joints and give an example of each: Synarthrosis - Amphriarthrosis - Diarthrosis - 2. Name the five types of bones and give an example of each: Long - Short - Flat - Irregular - Sesamoid -

Explanation / Answer

There are three types of joints in human body. They are as follows:

1. Synarthrosis: This is an immovably fixed joint. This is seen between the bones connected by fibrous tissue. The examples include the sutures of the skull.

2. Amphiarthrosis: It is a slightly movable joint. In these joints, the surfaces are connected by ligaments or cartilages. Examples include pubic symphysis of the pelvis, and intervertebral joints of the spinal cord.

3. Diarthrosis: This is a freely movable joint. These joints can move freely in various planes. All diarthrosis joints are synovial joints. The examples include shoulder, elbow, hip, knee etc.

There are five types of bones in human body. They are as follows:

1. Long bones: The bones which are longer than their width are considered long bones. Femur, humerus, tibia are good examples of long bones. Even metacarpals, metatarsals, and phalanges are considered long bones.

2. Short bones: The bones which are as wide as they are long are considered short bones. The primary function of these bones is to provide support and stability. Examples include carpals, tarsals, etc.

3. Flat bones: the bones which are flat and strong are considered flat bones. The main function of these bones is to provide protection to the vital organs of the body. These bones also form base for muscular attachment.

4. Irregular bones: These are the bones that do not have proper shape or uniformity. Examples include vertebrae, mandible, and sacrum.

5. Sesamoid bones: These bones are generally short or irregular and are imbedded in a tendon. The best example of this bone is patella.

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