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ANATOMY & PHYSIOLOGY- the unity of form and function (saladin 9th edition)

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Venessa-week2 reply- anatomy

Imagine a fresh breeze blowing through your hair. You feel the sand on your feet with every step you take. It’s a perfect day to go jogging at the beach and forget about your problems, just letting your mind wander. Now imagine yourself in a different scenario. Imagine you are in your bed. You can’t move your arms, your legs; you can’t even talk. This is because you don’t have any bones in your body! Your life would be at risk because you have nothing that will protect your vital organs. That doesn’t seem fun. You could say our body is the perfect machine, and to describe its incredible performance, we can’t avoid talking about the human skeleton. This structure doesn’t only sustain our bodies, but it also protects our organs. Thanks to our skeleton, we can walk, run, jump…overall move! Imagine how we would be without our skeleton…we would look like an empty sack of potatoes! The human skeleton is the base of our bodies; it works as a shield to our organs, and its function is to protect them. Without our skeleton, we would not be able to do almost anything! Our body is composed of two hundred and six bones. All of which are extremely important for the function of our body.

Our skeleton is composed of a lot of bones! “It is often stated that there are 206 bones in the skeleton, but this is only a typical adult count, not an invariable number. At birth there are about 270, and even more bones form during childhood.” (Saladin,2020 p.224). Our skeleton is split into two regions. One is called our axial skeleton, which includes our vertebrae, thoracic cage, and our skull. “…forms the central supporting axis of the body” (Saladin, 2020, p.224). And the other region is called the appendicular skeleton. “The appendicular skeleton includes the bones of the upper limb and pectoral girdle and the bones of the lower limb and pelvic girdle.” (Saladin, 2020, p.224). This is composed of bones that support our appendages. The axial skeleton includes 80 bones. Twenty-nine bones are in our head, with most protecting our brain- one of the most critical vital organs we have. There are also 26 bones in our vertebrae and 25 in the thorax, including our ribs and sternum, protecting our heart and lungs, amongst other organs.

Next, our appendicular skeleton is composed of 126 bones divided equally into both sides, with 63 bones on each side. These bones include six in our forearms, 4 in our shoulders, 58 bones in our hands, 8 in our legs, 56 in our feet, and lastly, our 2 pelvic bones.

In conclusion, the axial skeleton and appendicular skeleton are two regions that divide the bones in our bodies; the middle part is the axial skeleton, and the outside regions are our appendicular skeleton. The bones in these regions help protect our vital organs and allow us to function the way that we do now. Without our skeleton, we would not be able to do hardly anything at all.


Our skeletal system is an essential topic for me because I can’t imagine how different my life would be without this structure that supports and protects my body and my organs. My life would be completely different. I wouldn’t be able to do the things that I love to do, and I would have to live my life completely different than what I do now.

WC: 603

REFERENCE: Saladin, K. (2020). Anatomy & physiology: The unit of form and function (9th ed.). McGraw Hill Education.

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