Essay about Jab 4 Histology

1688 Words Mar 2nd, 2012 7 Pages
Lab 4 Histology Name AL

List the four types of tissue found in the human body and give an example of each.
1. Epithelial
2. Connective
3. Muscular
4. Nervous

Epithelial tissue
What are the characteristics of epithelial tissue? it never has contact with another cell, it always has a free surface. They contain no blood vessels (avascular) and depend on underlying tissues for needed nutrients and oxygen sources to maintain homeostasis. it is usually very thin for this reason. The cells are tightly packed together. composed almost entirely of cells. apical and basal surfaces

What is the function of epithelial tissue? protection, secretion, and absorbtion

Where is epithelial tissue found? Epithelial tissue is
…show more content…
What type tissue is this? connective

The nuclei of the cells that secrete the collagen fibers are indicated by the number 1. What type cells are these? fibroblast

[pic]

The cells of the connective tissue pictured below in a cross section from the trachea are specialized for fat storage and do not form ground substance or fibers. On prepared slides, this type tissue appears somewhat like a fish net with white spaces connected together in a network. The cytoplasm and nucleus have been pushed to one side by a single, large, fat-filled vacuole that occupies the center of the cell.
Identify:
1. matrix
2. chondrocyte in lacuna
3. vacole containing fat droplet

[pic]

The slide below shows a section of the trachea (windpipe). Rings of hyaline cartilage embedded within the walls of the trachea provide support and help to maintain an open airway. Hyaline cartilage is the most common form of cartilage in the body, making up part of the nose, connecting ribs to the sternum, and covering the articulating surfaces of bones. When sectioned and stained, the matrix of hyaline cartilage takes on a light purple color. Cartilage-forming cells called chondroblasts produce this matrix, which consists of an amorphous ground substance heavily invested with collagen fibers. Chondrocytes (mature cartilage cells) can be seen singly or in groups within spaces (called lacunae) in

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