How Much Does a Skeleton Weight || What are the longest bones in our body

How Much Does a Skeleton Weight

Today I am going to tell you how much a skeleton weighs. The weight of the skeleton depends on the weight of our body. As per doctors' research, to find the weight of the skeleton we use a ratio of our skeleton weight which is ¼ of our body weight. If a body has 70kg of weight and its ¼ will be 17.5kg.

How Much Does a Skeleton Weight || What are the longest bones in our body
Human Skeleton


What are the longest bones in our body?

Bones – without them, you would look like this.

We have flat bones, irregularly-shaped bones, short bones and mighty long bones – all of them working hard to keep all your muscles and organs in the right place. The first time you'd seen a bone being depicted on your favourite cartoon show probably looks something like this.

This is a long bone with a shaft made up of compact bone and two ends comprised of spongy Bone. But do you know which of the long bones are the longest of them all?


The Longest Bones Of Our Body

There are the Five longest bones in our body. Well, let me introduce you to the five longest bones in our body.


1- ULNA

First up, we have the ulna. The ulna is the longest and largest of the forearm bones. It provides an attachment site for many muscles acting on the wrist, forearm and upper arm.


How Much Does a Skeleton Weight || What are the longest bones in our body
Ulna


The top of the ulna forms the elbow joint together with its fellow forearm bone – the radius – and the humerus which is the bone of the upper arm.

The ulna also forms a bony projection at the elbow called the olecranon process. The olecranon process fits into a nook called olecranon fossa and this nifty duo prevents the elbow from hyperextending. From the elbow, the ulna gradually narrows and curves medially as it extends towards the wrist, however, the ulna does not actually attach at the wrist. That job is taken care of by the radius. Well, who said the longest bones have to have all the fun?


2- Humerus

The next bone we'll be looking at is the humerus. The humerus is the longest bone in the arm and the only bone in the upper arm. He's all alone and there is nothing "humorous" about that.

So, what does it do exactly? Well, the humerus acts as an anchor for many of the muscles that manipulate the upper arm at the shoulder and the forearm at the elbow. Let's take a look at some of these next. Here on the left, you can see the deltoid muscle inserting on the upper half of the humerus.


How Much Does a Skeleton Weight || What are the longest bones in our body
Humerus


This is an example of a muscle that manipulates the upper arm at the shoulder. Here on the right, you can see that the brachialis muscle originates on the upper half of the humerus, and this is an example of a muscle that acts on the forearm at the elbow. The head of the humerus forms the glenohumeral joint with the glenoid cavity of the scapula. The glenohumeral joint is what we call a ball-and-socket joint. Here, the head of the humerus is the ball and the glenoid cavity of the scapula is the socket. The body contains only one other ball-and-socket joint. Can you guess where it is? Here's the hint, It's formed by one of the bones. Below the head of the humerus is the anatomical neck seen here in the diagram to the left. This then merges into the surgical neck as you see here on the diagram to the right. Here the surgical neck becomes the body of the humerus as it extends towards the elbow joint and articulates with the radius and ulna bones of the forearm as we talked about earlier.


3- Fibula

The fibula runs parallel to the larger and more complex tibia. It supports the muscles of the lower leg and stabilizes the ankle. The fibula is just a tiny bit shorter than the tibia and much thinner too and the head of the fibula lies below the knee and forms the upper tibiofibular joint with the outer edge of the tibia as you can see here. Then, from here, the fibula extends slightly medially towards the ankle, and at the ankle, the fibula forms a bony knob called the lateral malleolus which you can see sticking out from the talocrural or ankle joint on the diagram here.


How Much Does a Skeleton Weight || What are the longest bones in our body
Fibula


Between the inner edge of the lateral malleolus and the outer edge of the tibia, the fibula forms the bottom of the tibiofibular joint with the tibia, and together with the tibia, fibula and talus from the talocrural joint seen here. Are you still with me? Then here's the fun fact. Tissue is often harvested from the fibula to be grafted onto other bones in the body. This is because the fibula bears so little bodyweight that it tends to have more bone mass than is needed to support the leg.


4- Tibia

Second, to last, we have the tibia – almost the longest bone in the body but not quite.


How Much Does a Skeleton Weight || What are the longest bones in our body


The tibia is commonly known as the shin bone. It is the largest and strongest of the lower leg bones. In fact, it totally hogs the limelight from its poor neighbour, the fibula. Let's zone in on the anatomy of the tibia and together with the femur, it forms the knee joint as you can see on the diagram here, and then together with the fibula and talus, the tibia also forms the ankle joint as you can see here highlighted in green. Although it wears many hats, the tibia's main role is to support the body's weight from the knees to the ankles. This support from the tibia is essential for movements of the legs such as standing, walking, running and jumping.


5- Femur

Last but certainly not least is the femur. Not only is the femur the longest bone in the body but is also the strongest and heaviest. What a showoff! Let's take a look at the anatomy.


How Much Does a Skeleton Weight || What are the longest bones in our body
Femur


The head of the femur attaches to the acetabulum in the pelvic girdle. These two structures connect to form the hip joint – a ball-and-socket joint – and yes, there you go, the answer to the question we asked you when talking about the humerus

Earlier. The ball-and-socket is named that way for the way the femur and acetabulum fit together.


The head of the femur is the ball whilst the acetabulum is the socket. The rounded ball shape allows the femur to move in almost any direction at the hip. The bottom end of the femur forms the knee joint with the tibia in the lower leg which We talked about earlier. So you could say that the femur is a pretty important bone. But don't say anything to it, otherwise, it will grow an ego as large as it is. And those are the longest bones in our body.


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