IMMOVABLE JOINTS - LESSON 224

-
In the earlier posts we have already learned about the types of joints like movable joints and immovable joints. Now in this post we would learn some what about immovable joints.

The joining of two or more bones is the articulation or the joint. Some of the immovable joints between the skull bones are the suture joints  A suture is a type of articulation in which the bones that makeup and the bones are close together.  In this suture joint, the union of bones is connected by connective tissue.

Other joints, such as those between the vertebrae, are partially movable joints. Most of the joints however allow considerable movement. Those which are freely movable joints are called as synovial joints. This synovial joint is also called as diarthrosis which is the most movable type of joint in the body of a mammal. Like with other joints mostly, synovial joints gains movement at the meeting of the articulating bones. Examples of the synovial joints are the ball-and-socket type of joint(hip joint; the head of the femur fits into the acetabular fossa of the ilium) and the hinge type(elbow, knee and ankle joints).

Description of the synovial joint:
The vascularized connective tissue which has a lack of basement membrane all are consisted in Synovial tissue and also sterile. The bones in this joint (synovial joint) are separated by a joint capsule. This joint capsule composed of fibrous cartilage tissue and the articular cartilage. Ligaments also called fibrous bands, or sheets, of connective tissue often anchor the bones together around the joint capsule to become strength. The surface of the bones at the joint is covered with a smooth cartilage surface called the articular cartilage.

The synovial cavity membrane lies under the joint capsule and lines the synovial cavity between bones. The synovial cavity is filled with a particular and special lubricating fluid produced by the synovial membrane. This synovial fluid consists of water and nutrients that nourish as well as lubricate the joints, so that friction on the articular cartilage is minimal.

Bursae:
Bursae singular bursa are the closed sacs of synovial fluid lined with a synovial membrane and are located near a joint. These are formed in the spaces between tendons which are called connective tissue binding muscles to bones, ligaments which are called connective tissue binding bones to bones and bones. Bursae lubricate these areas where friction would normally develop close to the joint capsule.

In the next post we discuss some of the Vocabulary terms.

To go to the prior lesson please click the link below


To go to the first lesson, please visit the link below


Home Page:

Comments

Post a Comment

Popular posts from this blog

HUMAN BONE STRUCTURE - LESSON 200

-
Now in this post we will learn about the structure of the bone. In our human body there are 206 bones of different types are there. The thigh, lower leg, and upper and lower arm consists of long bones. These bones have large surface areas for muscle attachment and are very strong, are broad at the ends where they join with other bones. There are five types of bones in the human body. The five types are long, short, flat, irregular, and sesamoid. 1. Long bones:- These bones are comprised mostly of compact bone and lower amounts marrow, which is located within the medullary cavity, and spongy bone and are characterized by a shaft, the diaphysis, that is much larger in length than breadth. These bones are mostly present in the limbs, including those of the fingers and toes are long bones. Except the wrist, ankle, and kneecap these long bones are located in most. 2. Short bones:- These short bones are generally cube shaped and having a thin layer of compact bone surrounding a...
Read more

IMPORTANT RADIOLOGY NUCLEAR MEDICINE TERMS-3-LESSON 148

-
1. Magnetic resonance imaging- A magnetic ground radio signals are used to outline sagittal, coronal, and axial pictures of the body. 2. Megavoltage- High-energy radiation engendered by means of an equipment and employed in restorative x-ray analysis intended for cancer. 3. Nuclear medicine- This is a medical speciality, which examines and employs of radioactive materials called radionuclides within identification and treatment of ailment. 4. Orthovoltage- Emission of low-energy radioactive waves that are employed in pain-killing radiation therapy and exterior skin cancer diseases. 5. Palliative- Means just soothing or painkilling, not curing completely that is not possible. 6. PET scan or positron emission tomography- Radioactive materials are administered using intravenous route and these substances give out positrons. They generate a cross-sectional picture of the metabolism of the body. These images symbolize local concentration of the radio...
Read more

The Longest Medical Word

-
Image
Today, we will know about an interesting medical term in medical language. This post is just to know about a different thing in the medical language, though this word is used very rarely in our day-to-day medical transcription work. The longest medical word is "Pneumonoultramicroscopicsilicovolcanoconiosis"!!!!!. Can you read at least Pneumonoultramicroscopicsilicovolcanoconiosis.  Now, we will see the meaning of this word.  To know the meaning shall we split the word by word. Okay.  1.  Pneumono 2.  Ultramicrosopic 3.  Silico 4.  Volcano 5.  Conosis. So, Pneumonoultramicroscopicsilicovolcanoconiosis comprises of 5 medical words and in combination, they give a meaning of a certain kind of disease condition related to lungs.  Now, we will see the meaning of each to get the combined understanding of the longest medical word. Pneumono means lungs, ultramicroscopic - means minute, silico means silicon, volc...
Read more