marco alvarez assign 4

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Jan 9, 2024

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SC235: Human Biology Unit 4 Assignment: The Complexity of Human Organs Name:marco alvarez Please address each question and submit the completed worksheet to the Unit 4 Assignment Dropbox when completed. Part I: Hierarchy of Human Organization and Cell Theory: Review the hierarchy of human organization in the textbook and then click on the blank to type the missing word in the definition. 1. A(n) molecule is a combination of atoms bonded together. 2. A(n) organelle is a component or “little organ” within a cell that carries ouWt a specific function. 3. The cell is the smallest unit of life 4. A(n) tissue is a group of cells that work together to serve a specific function. 5. A(n) organ is a group of tissues that work together to serve a specific function 6. A(n) organ system is a group of organs working together to serve a specific function. 7. A(n) organism is an individual form of life composed of many cells, organs and tissues. 8. The unified cell theory states that a cell is the smallest unit of life; cells make up all living things, and new cells can only arise from pre-existing cells. 9. Bacterial cells are classified as prokaryotes. Human cells are animal cells and are classified as eukaryote because they have a well-defined nucleus and membrane-bound organelles. Part II: Organelles: Select the correct cell organelle from the dropdown menu. Note that you may have to scroll down to see the full list of organelles. 1. Regulates movement of materials in and out of the cell 2. The material surrounding the nucleus 3. Digests substances brought into the cell and destroys parts of the cell 4. Provides cell with energy through the breakdown of glucose during cellular respiration 5. Contains DNA and controls cellular activity 6. Produces components of ribosomes (RNA and proteins) 7. Site where protein synthesis begins 8. Studded with ribosomes and produces membrane 9. Detoxifies drugs and produces membranes

10. Sorts, modifies and packages proteins Part III: Tissues & Organs 1. Complete the table below by listing the four specific tissue types found within the human body and describe the function of each tissue. Tissue Type Function 1. connective tissue Supports other tissue and binds them together 2. epithelial tissue Provides coverage to linings and skin 3.muscle tissue Provides voluntary and unvoluntary movement 4.nervous tissue Provides communication such as brain and muscle communication 2. Select one of the following organs and fill in the table based on your selected organ: ● Heart ● Lung ● Kidney ● Skin ● Liver ● Stomach The table should: a. Identify at least three tissue types found within your selected organ. b. List and describe at least three cell types found within your selected organ. Your description should address whether these cell types have any special structures (e.g. , presence of microvilli and/or abundance of particular organelle such as mitochondria) and ho w they contribute to the overall function of the organ. Selected Organ: _ __liver ____________ Three tissue types in selected organ Three cells in selected organ Description of each cell type (Include any special structures or abundance of a particular organelle in your description) Describe how the cell or tissue contributes to the overall function of the organ (Keep the specific characteristics of the cell/tissue in mind) 1.epithelial – blood vessels – Hepatocytes Hepatocytes are the most abundant found in liver tissue. Function protein and carbohydrate metabolism and detoxification of various compounds and immune function Hepatocytes provide stored energy by the form of glycogen as well as the metabolism of important vitamins and minerals

2. 2. connective tissue Hepatic stellate cells Hepatic stellate cells contribute to vitamin A storage, immune response and regeneration of liver tissue Produce various white blood cells to fight off disease 3. nerve tissue – communication between hepatocytes and various areas of the body Kupffer cells Kupffer cells main function is the digestion of viruses and bacteria Destroys forgein materials that passes through the liver tissue Part IV: Importance of Cell Diversity Describe what might happen if the assigned organ was made of a different tissue type. What if it was made of only one type of cell? How would homeostasis be compromised if this happened? If it was made from one cell type homeostatic cannot be maintained. For example if all the liver was made of Kupffer cells livers would be great at fighting foreign objects but it will not be able to regenerate once injured or damaged which means livers will be not be as effective as removing toxins which will certainly have an impact on all the various organs systems in the human body References : (Note: Please provide references to any sources you consult, including your textbook. Please review APA-formatting guidelines and ensure that your references are properly formatted. Visit our Writing Center for additional help.) Submitting Your Assignment Save your copy of the APA-formatted assignment in a location and with a name that you will remember. Be sure to use the "Save As" option to include your first and last name in the title of the document. For example, your assignment might be called Shawn_Edwards_Assignment4.doc When you are ready, submit your work via the Dropbox.

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