Histology: Tissues and Tissue Observations Data

Topics: Tissues, Connective tissue, Muscle Pages: 6 (1242 words) Published: August 24, 2013

Histology
Laszlo Vass, Ed.D. Version 42-0013-00-01

Lab RepoRt assistant
This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.

Purpose

What is the purpose of this exercise? To give me the ability to be able to identify the major tissues in the human body and state the location of the tissues in the body.

Are there any safety concerns associated with this exercise? If so, list what they are and what precautions should be taken. As always make sure to have a clean working area and wear any protective equipment necessary for the experiment.

Exercise 1: Epithelial Tissue

Data Table 1: Epithelial Tissue Observations|
TISSUE TYPE| OBSERVATIONS|
Simple Squamous| Single layer of cells very thin and flat.| Simple Cuboidal| Single layer of cells shaped like cubes| Simple Columnar (stomach)| Single layer of cells but they are tall like columns| Simple Columnar (duodenum)| Single layer of cells that are tall like columns but they looked to have cilia on top of the cells| Stratified Squamous (keratinized)| Multiple layer of cells they are flat and kind of look like scales. This particular cell seems to have a rougher surface.| Stratified Squamous (non-keratinized)| Also a multiple layer of cells that are flat and look like scales but unlike the keratinized the surface appears smooth.| Pseudostratified Ciliated Columnar| Looks to be single cells squished together in kind of a column form. They also have cilia attached to them.| Transitional| Large and round cells|

Stratified Cuboidal (online)| Multiple cells in the shape of a cube or square.| Stratified Columnar (online)| Multiple layer of cells in standing upright like columns.|

Questions

A. Why is the study of histology important in the overall understanding of anatomy and physiology? Histology is important when understanding anatomy and physiology because you must understand the structure and functions of all the tissues when you are studying the organs and systems of the body.

B. How are epithelial tissues named? They are named based on their arrangement and shape.

C. Why are some epithelial tissues stratified? Because they have multiple layers in order to withstand wear and tear.

D. Unlike squamous cells, cuboidal and columnar cells have large, open cytoplasm. Which functions of epithelial tissue are supported by having such big cells? Cuboidal and Columnar are large round cells that allow the cells to slide or move past each other. It also allows the tissue to stretch.

E. Look at the following drawings and identify each type of epithelial tissue:

| 1. Simple Squamous|
| 2. Simple Columnar|
| 3.Pseudostratified Ciliated Columnar|
| 4. Stratified Cuboidal|

Exercise 2: Connective Tissue
obseRvations

Data Table 2: Connective Tissue|
Tissue| Amount and Shape ofCells| Amount ofMatrix| Are there fibers? If so,are they parallel orscattered?| Mesenchyme (online)| Looks like a star | one| scattered| Aerolar (online)| Loose cells surrounded by a gel type substance| one| no| Adipose (online)| Modified areolar tissue| Small amount| | Dense Irregular (online)| Irregularly arranged, scattered around the tissue| One| | Reticular| Multiple rectangular in shape| One | Scattered| Dense Regular: Tendon| Multiple they look like long stretched out columes | extracellular| Parallel| Hyaline Cartilage| Multiple circular in shape, spread out over an area not really close together| extracellular| | Elastic Cartilage|...
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