A & P 1 Lab 5 Skin and tissue
Winter2020!
Lab5Tissuesandskin.docx
Lab 5 Tissues and Skin BIO201L
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
Pre-Lab Questions:
”1. What is a tissue?”
Click here to enter text.” 2. What is the function of epithelial tissue? ”
Click here to enter text.” 3. What is the function of connective tissue? ”
Click here to enter text.” 4. What is the function of muscular tissue? ”
Click here to enter text.” 5. What is the function of nervous tissue? ”
Click here to enter text.” 6. Describe sebaceous glands, sweat glands, and hairs with regard to the function of the skin. ”
Click here to enter text.” 7. What is the function of melanin? ”
Click here to enter text.” 8. List the similarities and differences of the layers of the epidermis. ”
Click here to enter text. Experiment 1: Microscopic Slide Examination of Tissue
”Identify the following tissue slides: ”
A- Simple squamous epithelium
B- Simple cuboidal epithelium C- Adipose connective tissue
D- Reticular connective tissue E- Elastic cartilage tissue
F- Cardiac muscle tissue
G- Skeletal muscle tissue
H- Nerous tissue
A) Epithelial Tissue Type
B) Epithelial Tissue Type
Connective Tissue
C) Connective Tissue Type
D) Connective Tissue Type
E) Connective Tissue Type
F) Muscular Tissue Type
G) Muscular Tissue Type
H) Unidentified Tissue Type
Post-Lab Questions
”1. What is the difference between simple, stratified and pseudostratified epithelial tissue? ”
Click here to enter text.” 2. Describe the cell shape of squamous, cuboidal and columnar epithelial cells. ”
Click here to enter text.” 3. Does the number of cell layers or the cell shape play a role in the function of the epithelial tissue? Provide three examples. ”
Click here to enter text. ”4. List and describe the different types of connective tissue. What similarities and differences did you notice when viewing the prepared slides? ”
Click here to enter text. ”5. What are the three components of the extracellular matrix in connective tissue? ”
Click here to enter text. ”6. What are the three types of cartilage? What are their similarities and differences? ”
Click here to enter text. ”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. ”
Click here to enter text. ”8. Looking at the nervous tissue, state the cell processes visible (i.e., axon) on the prepared slide. For each process, state the function. ”
Click here to enter text. ”9. What is the difference between multipolar, bipolar and unipolar neurons? ”
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Experiment 2: Microscopic Slide Examination—Skin
”1. Label the arrows in the following slide image: ”
A- Epidermis layer B- Sweat gland duct
C- Dermal papillae
D- Dermis layer
”2. Determine whether the following statements pertain to the epidermis or dermis. ”
|
Statement |
Epidermis or Dermis |
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”This layer consists of the papillary layer and the reticular layer” |
Dermisis |
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”Composed of keratinized stratified Squamous epithelium” |
Epidermissis |
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”Langerhans cell and Merkel cell reside in this layer” |
Epidemisis |
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”Composed of dense irregular connective tissue” |
Dermisis |
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”The fingerprint pattern, unique to each individual, is created in this layer” |
Epidermisis |
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”Outermost layer of skin” |
Epidermisis |
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”This layer has laminated granules and keratohyalin granules within the stratum granulosum” |
Epidermisis |
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”The dense supply of blood allows this layer to play a part in body temperature regulation” |
Dermisis |
”3. List the five layers of the epidermis from most internal to most external and describe their function. ”
Click here to enter text. ”4. List the two layers of the dermis from most internal to most external and describe their function. ”
Click here to enter text. Experiment 3: Sweat Gland Distribution
Table 2: Sweat Gland Distribution
|
Body Region |
Sweat Glands/cm2 |
|
Right Anterior Forearm |
Click here to enter text. |
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Right Palm |
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Right Anterior Thigh |
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Right Anterior Foot |
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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? ”
Click here to enter text. ”2. What is the purpose of sweat glands? ”
Click here to enter text. ”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? ”
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Experiment 4: Skin Receptors
Table 3: Two-Point Discrimination Test Results
|
Body Region |
Left-Side Caliper Measurement |
Right-Side Caliper Measurement |
|
Scalp |
4 |
3 |
|
Forehead |
3 |
2.5 |
|
Lips |
1 |
1 |
|
Front of Neck |
3 |
3.5 |
|
Back of Neck |
4 |
3 |
|
Shoulder |
4 |
4 |
|
Upper Arm |
2 |
2.5 |
|
Elbow |
1.5 |
1 |
|
Forearm |
2 |
3 |
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Wrist |
2.5 |
3 |
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Back of Hand |
1 |
1 |
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Palm of Hand |
2 |
3 |
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Tip of Thumb |
1 |
1.5 |
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Tip of Index Finger |
2 |
2 |
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Tip of Middle Finger |
1 |
2 |
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Tip of Ring Finger |
1 |
1 |
|
Tip of Pinkie |
2 |
1 |
Post-Lab Questions
”1. Which region was most sensitive to this test? Which was least sensitive? ”
Click here to enter text. ”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? ”
Click here to enter text. ”3. Was there a difference between the measurements of the left and right side of the body? Why or why not? ”
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Experiment 5: Introduction to the Fetal Pig
Table 4: External Observation of the Fetal Pig
|
Area |
Observations |
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Skin |
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Head Region |
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Neck Region |
Click here to enter text. |
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Trunk Region |
Click here to enter text. |
|
Tail Region (including sex of pig) |
Click here to enter text. |
Insert photo of pig in dissection tray with your name and access code clearly visible in the background:”
