Fascinating Animals

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Archive for the category “Cell Biology”

Skeletal System – Skeletons, Joints & Bones – part one

human skeleton

Click on the “thumbnail” picture above to view it in larger size

Did you know there are 206 bones in the average human being?  Bones support and protect the various organs of the body, produce red and white blood cells and store minerals.  Bone tissue is a type of dense connective tissue. Bones have a complex internal and external structure making them lightweight, yet strong and hard.

The cranium or skull and some other groups of bones contain a number of duplicate bones.  You can find the numbers of each type of bone in the human body by scrolling down the following linked page. For example there are 26 individual vertebrae bones in the human being, and there are 24 ribs (or 12 pairs).   Ossicle bones are the bones of the ear.  The hyoid bone is the one and only bone of the throat.  It is a horseshoe-shaped bone that serves as an anchoring structure for the tongue.  The clavicle is called the collar-bone, and the scapula called the shoulder-blade.


The skeleton is an animal’s internal support frame. This bony structure helps to protect the organs and aids in movement. Some animals, including human beings, have an internal skeleton called an endoskeleton. Other animals have a skeleton on the outside of their body called an exoskeleton.

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Cell Biology – Cells, Tissues, Organs & Systems

animal cell

animal cell

Animal cell diagram. From the textbook Human Biology

(Daniel Chiras, published Jones and Bartlett, 2002)

Living organisms can be divided into Prokaryotes and Eukaryotes.



You can click  here  to see good diagrams showing Prokaryotic & Eukaryotic Cell differences.

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