Internal Structure of Skeletal Muscle

The Internal Structure of Skeletal Muscle on Prezi

Chewing Lab

Bone Fractures

Bone Fractures on Prezi

Self-Analysis

This quarter I've learned about the organization of the body, medical terms, homeostasis, epithelial tissue, and histology. I've found that I really understand the concept of homeostasis. I can tell when something is showing a positive or a negative feedback, and can give out two automatic examples of these processes, which are: clotting of the blood when an injury occurs, and shivering to raise a body's temperature. However, I have found that I am not very familiar with the medical terms used. I understand most of the terms and what they entail, for example, I know that the term superior means that something is more towards the top of the body, or is placed higher compared to another part of the body. Nevertheless, there are terms such as lateral that I cannot seem to remember at all. Even though I understand most of the terms, it will still take me a few moments of thinking before I am able to remember their meaning. This of course is something that needs to be fixed. In order to do this, I plan on making new flashcards, new diagrams, and some sort of quiz. Flashcards will help to make sure I remember each term and it's meaning. Diagrams in particular help me learn, so by making these I will able to have a better understanding of the body parts and where they are in relation to each other, and how to explain so correctly. Finally, I'll use the quiz to wrap everything up, so I'll know and completely understand these terms and how to use them.

The Body Shop

The Body Shop - This article is all about replacement parts. However, these parts aren't for a broken car or other machine, these are replacement parts for the human body. Fifteen years ago Joseph Vacanti and Bob Langer pioneered the new process of growing human tissues in a lab. Now, Langer, Vacanti and his brother, along with researchers around the world, look to the day when replacement organs and tissue will be ready for those who need them.

Today, tissue engineered skin is the first "neo-organ" approved by the U.S. Food and Drug Administration.  This new skin aids burn victims and even patients with severe skin sores or ulcers. It is the hope, that within the next few years, lab-grown cartilage and bone would be produced in labs.  However, growing these "neo-organs" isn't the simplest thing in the world. In order for tissues to grow in a lab, scientists must mimic the physical environment in which cells naturally grow. Joseph Vacanti and Bob Langer created a scaffold on which cells can be seeded. This scaffold consists of biodegradable materials that look like spaghetti strands attached together. This scaffoldings provide cells with better access to waste removal and nutrients. Also, the scaffoldings can be molded into any shape or size, which gives anyone a custom grown tissue. Ultimately, it is the hope that in the future, these custom-made organs and tissues would be used as solutions to even the most life-threatening illnesses.

A Summary of Epithelial Tissue Organizational Types

1. Simple Squamous Epithelium

Characteristics of simple squamous epithelial tissue:

• A single later of flat cells that contain a disc-shaped nucleus. They are used in functions such a diffusion and filtration.

Examples of simple squamous epithelial tissue:

• This type of tissue is found in kidney glomeruli, the lining of the heart, blood vessels, and lymphatic vessels.

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2. Simple Cuboidal Epithelium

Characteristics of simple cuboidal epithelial tissue:

• A single layer of cube-like cells that have a large spherical nuclei. Their function is secretion and absorption.

Examples of simple cuboidal epithelial tissue:

• Cuboidal epithelium is found in kidney tubules, ducts and secretory portions of small glands, and ovary surface.

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3. Simple Columnar Epithelium

Characteristics of simple columnar epithelial tissue:

• A single layer of tall cells that contain an oval nuclei. These types of cells can contain cilia. They are used in absorption and secretion.

Examples of simple columnar epithelial tissue:

• Ciliated columnar epithelium lines the small bronchi, uterine tubes, and some regions of the uterus. Non-ciliated columnar epithelium is lines the digestive tract and gallbladder. 

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4. Pseudostratified Columnar Epithelium

Characteristics of pseudostratified columnar epithelial tissue:

• A single layer of cells with differing heights. They can be either ciliated or non-ciliated. Their function is secretion and propulsion of mucus.

Examples of pseudostratified columnar epithelial tissue:

• Ciliated pseudostratified columnar epithelium is found in the trachea, while non-ciliated is found in the male sperm-carrying ducts.

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5. Stratified Squamous Epithelium

Characteristics of stratified squamous epithelial tissues:

• A thick membrane composed of several layers of cells. Their function is to protect the underlying areas that are subjected to abrasion.

Examples of stratified squamous epithelial tissues:

• Stratified squamous epithelial tissue is found in the external part of the skin’s epidermis (keratinized cells) and linings of the esophagus, mouth and vagina (non-keratinized cells).

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6. Stratified Cuboidal Epithelium

Characteristics of stratified cuboidal epithelial tissues:

• This type of tissue is very rare in the body, but when found is usually two cell layers thick.

Examples of stratified cuboidal epithelial tissues:

• This tissues are found in some sweat and mammary glands.

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7. Stratified Columnar Epithelium

Characteristics of stratified columnar epithelial tissue:

• This type of tissue is had limited distribution in the body and is usually occurs at a transition area between two other types of epithelia.

Examples of stratified columnar epithelial tissue:

• Stratified columnar tissue is found in the pharynx, male urethra, and the lining of some glandular ducts.

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8. Transitional Epithelium

Characteristics of transitional epithelial tissues:

• Transitional epithelium is a layer of several cells, with basal cells being cubiodal and surface cells being dome shaped.

Examples of transitional epithelial tissues:

• Transitional epithelium lines the urinary bladder, ureters, and part of the urethra.

Homeostasis Lab

Homeostasis

A link to the process of homeostasis.

Medical Terms

The medical terms of anatomy.

Levels of Structural Organization

Levels of Structural Organization on Prezi