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Name: Lab Period: The Microscopic Structure of Blood Vessels and Formed Elements 1. Blood Vessels • Using the microscope, examine the slide showing a cross section of an artery, vein, and nerve. • In the boxes below, draw each organ as you see it under the microscope. • Using your textbook (first several pages of chapter 20) or histology book, label nuclei and any other special structures or cells associated with specific tissues (listed at the bottom of each box or described by instructor). Artery (cross section) Slide: Vein (cross section) Slide: Nerve (cross section) Slide: 1. tunica intima (with endothelium and internal elastic lamina) 2. tunica media (with smooth muscle and dense elastic connective tissue) 3. tunica externa lumen, erythrocytes 1. tunica intima (with endothelium) 2. tunica media (with smooth muscle) 3. tunica externa lumen, erythrocytes • Compare to blood vessels and note proximity to blood vessels. • Identify as many of the structures as possible that you observed in worksheet 1.5. Q1.1 Define artery. Q1.2 Define vein. Q1.3 What is the function of the smooth muscle in the tunica media? Q1.4 What is the function of the dense elastic tissue in arteries? Q1.5 Compare the structure of an artery and vein. What about them is different? What is similar?

          Name: 
Lab Period: 
The Microscopic Structure of Blood Vessels and Formed Elements
1. Blood Vessels
• Using the microscope, examine the slide showing a cross section of an artery, vein, and nerve.
• In the boxes below, draw each organ as you see it under the microscope.
• Using your textbook (first several pages of chapter 20) or histology book, label nuclei and any other special structures or cells associated with specific tissues (listed at the bottom of each box or described by instructor).
Artery (cross section)
Slide:
Vein (cross section)
Slide:
Nerve (cross section)
Slide:
1. tunica intima (with endothelium and internal elastic lamina)
2. tunica media (with smooth muscle and dense elastic connective tissue)
3. tunica externa
lumen, erythrocytes
1. tunica intima (with endothelium)
2. tunica media (with smooth muscle)
3. tunica externa
lumen, erythrocytes
• Compare to blood vessels and note proximity to blood vessels.
• Identify as many of the structures as possible that you observed in worksheet 1.5.
Q1.1 Define artery.
Q1.2 Define vein.
Q1.3 What is the function of the smooth muscle in the tunica media?
Q1.4 What is the function of the dense elastic tissue in arteries?
Q1.5 Compare the structure of an artery and vein. What about them is different? What is similar?

Name:
Lab Period:
The Microscopic Structure of Blood Vessels and Formed Elements
1. Blood Vessels
• Using the microscope, examine the slide showing a cross section of an artery, vein, and nerve.
• In the boxes below, draw each organ as you see it under the microscope.
• Using your textbook (first several pages of chapter 20) or histology book, label nuclei and any other special structures or cells associated with specific tissues (listed at the bottom of each box or described by instructor).
Artery (cross section)
Slide:
Vein (cross section)
Slide:
Nerve (cross section)
Slide:
1. tunica intima (with endothelium and internal elastic lamina)
2. tunica media (with smooth muscle and dense elastic connective tissue)
3. tunica externa
lumen, erythrocytes
1. tunica intima (with endothelium)
2. tunica media (with smooth muscle)
3. tunica externa
lumen, erythrocytes
• Compare to blood vessels and note proximity to blood vessels.
• Identify as many of the structures as possible that you observed in worksheet 1.5.
Q1.1 Define artery.
Q1.2 Define vein.
Q1.3 What is the function of the smooth muscle in the tunica media?
Q1.4 What is the function of the dense elastic tissue in arteries?
Q1.5 Compare the structure of an artery and vein. What about them is different? What is similar?

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