Straighterline BIO201L Lab 5 The Skeletal System Worksheet

Question # 00631738
Course Code : BIO201L
Subject: Biology
Due on: 01/17/2022
Posted On: 01/16/2022 09:25 PM
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Lab 5 Tissues and Skin

Pre-Lab Questions:

1.            What is a tissue?

2.            What is the function of epithelial tissue?

3.            What is the function of connective tissue?

4.            What is the function of muscular tissue?

5.            What is the function of nervous tissue?

6.            Describe sebaceous glands, sweat glands, and hair with regard to the function of the skin.

7.            What is the function of melanin?

8.            List the similarities and differences of the layers of the epidermis.

Experiment 1: Microscopic Slide Examination of Tissue

Identify the following tissue slides:

Lab 5 Tissues and Skin

 Post-Lab Questions

1.            What is the difference between simple, stratified and pseudostratified epithelial tissue?

2.            Describe the cell shape of squamous, cuboidal and columnar epithelial cells.

3.            Does the number of cell layers or cell shape play a role in the function of epithelial tissue? Provide three examples.

4.            List and describe the different types of connective tissue. What similarities and differences did you notice when viewing the prepared slides?

5.            What are the three components of the extracellular matrix in connective tissue?

6.            What are the three types of cartilage? What are their similarities and differences?

7.            What are the three types of muscular tissue? For each, describe the cell shape, the type of control (voluntary or involuntary) and the presence or absence of striations.

8.            Looking at the nervous tissue, state the cell processes visible (i.e., axon) on the prepared slide. For each process, state the function.

9.            What is the difference between multipolar, bipolar and unipolar neurons?

Experiment 2: Microscopic Slide Examination—Skin

1.            Label the arrows in the following slide image:

Lab 5 Tissues and Skin

2.            Determine whether the following statements pertain to the epidermis or dermis.

 

This layer consists of the papillary layer and the reticular layer   

Composed of keratinized stratified Squamous epithelium           

Langerhans cell and Merkel cell reside in this layer          

Composed of dense irregular connective tissue

The fingerprint pattern, unique to each individual, is created in this layer             

Outermost layer of skin               

This layer has laminated granules and keratohyalin granules within the stratum granulosum       

The dense supply of blood allows this layer to play a part in body temperature regulation            

3.            List the five layers of the epidermis from most internal to most external and describe their function.

4.            List the two layers of the dermis from most internal to most external and describe their function.

Experiment 3: Sweat Gland Distribution

Post-Lab Questions

1.            What area of the body had the greatest density of sweat glands, based on your experimental results? What area had the lowest? Why do you think this is?

2.            What is the purpose of sweat glands?

3.            If you were to perform this same test on a friend, do you believe their results would be similar or different to yours? Why or why not?

Experiment 4: Skin Receptors

Post-Lab Questions

1.            Which region was most sensitive to this test? Which was least sensitive?

2.            Can you think of an advantage to having a greater distribution of touch receptors in the area that you found to be most sensitive?

3.            Was there a difference between the measurements of the left and right side of the body? Why or why not?

Experiment 5: Introduction to the Fetal Pig

The neck is very short and the skin around this region is very thick.

 

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