The cells of the eye were created to see. No other cells in your body can perform this function. Yet, there are many different types of cells working together to make vision happen. All of these cells depend on the rest of your body to function properly. Many of the 11 organ systems help ensure you can see. 1. So what are the 11 body systems? 2. And of those 11 body systems, which ones do you think help your eyes "see"?
But what are humans made of? If you remember your chemistry, you will recall that all matter is composed of atoms! And yes, so are we! Atoms form molecules such as glucose (sugar), water, proteins, carbohydrates and many others. These molecules are used to form organelles - literally "tiny organs" found in cells.
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| Photomicrograph of the hippocampus of piglet brain. The purple stained structures are the nuclei of cells. The orange processes are the cytoskeleton of various cells. All these cells work together so that you can remember things! |
Cells are the smallest unit of life. They are considered the building blocks of life. Similar cells work together in order to make 4 basic types of tissues.
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| Photomicrograph showing skeletal tissue. This tissue enables you to stand and move instead of collapsing into a bag of organs! |
Tissue refers to a group of cells and their surrounding extra cellular matrix (the stuff outside of cells). From only these 4 types of tissues come all of the various organs in our body. Organs are a group of tissues specialized for a certain function: heart, lung, kidney, stomach, thymus gland - just to name a few.
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| Heart. Without ever having to think about it, your heart beats constantly so that blood is circulated throughout your body. |
When organs work together to perform specific function, the collection of organs becomes an organ system - the 11 systems (Can you name them?!). Finally, the organ systems working together so that you can live results in the whole organism.
Understanding how the human body functions requires understanding the structure and function of the body at each of these levels of organization: 1. molecules, 2. organelles, 3. cells, 4. tissues, 5. organs, 6. organ systems. 7. whole organism.
Video explanation of membrane transport
Steps of Cell Mitosis
Mitosis 2 - basic explanation and image of mitosis
Interesting mitosis site
Mitosis animation
Protein transcription and translation video
Instructional video for protein synthesis
Membrane Transport - good info and interactive site where you can quiz yourself
The cell membrane & transport
Cell Membrane Transport
Original Hippocratic Oath vs a Modern version
Scroll down to find the answers to questions asked above.
Answers
1. 11 Body systems are: 1) skeletal system, 2) nervous system, 3) muscular system, 4) digestive system, 5) respiratory system, 6) cardiovascular system, 7) integumentary system, 8) urinary system, 9) lymphatic system, 10) reproductive system, 11) endocrine system.
2. Body systems involved in vision: 1) nervous system - receive sensory information which is "seen" by the brain. 2) muscular system - enables your eyes to move and see the world around you. 3) digestive system - extracts nutrients that your visual cells need to function. 4) cardiovascular system - carries nutrients to the eye and waste away from the eye. 5) urinary system - removes waste generated by eye cells. I could continue, but are you beginning to "see" how all of the body systems work together to make specialize organs function?! It's amazing!
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