Monthly Archives: November 2009

Mechanism of Respiration: How respiration works?

Respiration can be divided into three parts: Inspiration Expiration Respiratory pause During the Respiratory Pause, the accumulation of carbon dioxide (CO2) in the arterial blood triggers off the respiratory centre in the medulla, which in turn sends a message to … Continue reading

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Muscles of the Human body

Muscles form the flesh of the body. They give shape (curves) to the body and most importantly, perform the function of movement. Muscles make up approximately fifty percent of our body weight. There are two main types of muscles: Voluntary … Continue reading

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Distribution of bones in the Skeleton

The distribution of bones in the skeleton is as follows: 22 bones from the skull bones: 8 of the cranium: 1 frontal bone forming the forehead 2 parietal bones forming the top and sides of the cranium 1 occipital bones … Continue reading

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Joints: How many types and how they work.

Joints Joints are formed where two bones meet. Joints may be divided according to their mobility, into three types: • Fixed joints or synarthroses – provide no movement e.g. sutures between the skull bones • Slightly moveable joints – found … Continue reading

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What are bones made up of?

Bones are made up of: • Bone tissue (compact and cancellous) • Fibrous tissue – connective tissue • Hyaline Cartilage – connective tissue • Adipose tissue – connective tissue Bones are also made up of 25% water and 75% solids … Continue reading

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How many types of bones do humans have?

There are four types of bones: • Long Bones are the bones of the arms and legs, fingers and toes • Short Bones are the bones of the wrist and ankles • Flat Bones are the bones of the skull, … Continue reading

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