Podcast
Questions and Answers
Which of the following is NOT a layer of a blood vessel?
Which of the following is NOT a layer of a blood vessel?
What type of tissue makes up the endothelium?
What type of tissue makes up the endothelium?
Which of the following blood vessels has the thickest wall?
Which of the following blood vessels has the thickest wall?
What is the function of the smooth muscle in the Tunica media?
What is the function of the smooth muscle in the Tunica media?
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What is the function of the basement membrane in a blood vessel?
What is the function of the basement membrane in a blood vessel?
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Which of the following is a characteristic of capillaries?
Which of the following is a characteristic of capillaries?
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What is the difference between the pulmonary circuit and the systemic circuit?
What is the difference between the pulmonary circuit and the systemic circuit?
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Which of the following statements about blood vessels is TRUE?
Which of the following statements about blood vessels is TRUE?
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What is the primary source of information for this lab?
What is the primary source of information for this lab?
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What is the purpose of the boxed information in the tables?
What is the purpose of the boxed information in the tables?
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What is the main topic of the lab?
What is the main topic of the lab?
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What is the recommended way to access more detailed information about the lab's topics?
What is the recommended way to access more detailed information about the lab's topics?
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What kind of activity is the "Labeling Activity Worksheet"?
What kind of activity is the "Labeling Activity Worksheet"?
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Where should students submit the completed Labeling Activity Worksheet
Where should students submit the completed Labeling Activity Worksheet
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What is the main focus of the lab, according to the content provided?
What is the main focus of the lab, according to the content provided?
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Which of the following is NOT mentioned as a source of additional information for the lab?
Which of the following is NOT mentioned as a source of additional information for the lab?
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Flashcards
Arterial Blockage
Arterial Blockage
Obstruction of arteries due to plaque buildup.
Plaque Formation
Plaque Formation
Accumulation of fatty deposits in arteries.
Top Hat
Top Hat
An educational platform used for lab activities and submissions.
Lab Manual
Lab Manual
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Knowledge Boxed
Knowledge Boxed
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Labeling Activity
Labeling Activity
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Worksheet Submission
Worksheet Submission
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Lab Activities
Lab Activities
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Arteries
Arteries
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Veins
Veins
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Capillaries
Capillaries
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Tunica interna
Tunica interna
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Tunica media
Tunica media
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Tunica externa
Tunica externa
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Lumen
Lumen
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Endothelium
Endothelium
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Study Notes
Lab Exercise #3: Blood Vessels
- This lab exercise focuses on blood vessels.
- Detailed information is in the lab manual.
Blood Vessels
- Arteries have thick walls.
- Veins have thin walls.
- Capillaries are composed of only endothelial cells.
Structure of Blood Vessels
- Tunica interna (intima): endothelium
- Tunica media: smooth muscle and elastic membrane.
- Tunica externa (adventitia): fibrous connective tissue.
- Lumen: the space inside the vessel.
- Basement membrane supports endothelium.
Endothelium
- Simple squamous epithelium.
- Lines the lumen.
- Only layer in capillary walls.
- Substances cross endothelium to exchange between blood and interstitial fluid.
- Because of thin wall.
Structure of an artery
- Tunica interna; innermost layer with endothelium, basement membrane, and internal elastic membrane.
- Tunica media; middle layer with smooth muscle layer and external elastic membrane.
- Tunica externa; outermost layer with fibrous connective tissue that anchors and supports the blood vessel.
Structure of a vein
- Tunica interna; innermost layer with endothelium and basement membrane.
- Tunica media; thinner than in arteries, with mostly smooth muscle.
- Tunica externa; outermost layer with fibrous connective tissue supporting the blood vessel.
- Valves; present only in veins; prevent backflow of blood.
Arteries and Veins (Longitudinal View)
- Shows a clear view of the layers of arteries and veins.
- Tunica Media of Vein: Smooth Muscle.
- Tunica Externa of Vein: Fibrous Connective Tissue.
- Tunica Externa of Artery: Fibrous Connective Tissue, Elastic Connective Tissue(External Elastic Lamina)
- Tunica Interna of Vein: Simple Squamous Epithelium(Endothelium).
- Venous Valve (open)
- Tunica Media of Artery: Smooth Muscle
- Tunica Interna of Artery: Elastic Connective Tissue (Internal Elastic Lamina), Simple Squamous Epithelium (Endothelium).
Histology (Artery and Vein)
- Photomicrograph of artery and vein (400X)
- Shows endothelium, internal elastic membrane, tunica media, and tunica externa.
- Vein's lumen also shows the presence of blood.
Pulmonary Circulation
- Pulmonary arteries carry deoxygenated blood from the pulmonary trunk to the lungs.
- Pulmonary veins carry oxygenated blood from the lungs to the left atrium.
Systemic Circulation
- Systemic arteries carry oxygenated blood from the aorta to the body.
- Systemic veins carry deoxygenated blood from the body to the superior or inferior vena cava.
Major Arteries of the Head and Neck
- Common carotid artery
- External carotid artery
- Internal carotid artery
Major Arteries of the Thorax
- Ascending aorta
- Coronary arteries
- Brachiocephalic trunk
- Right & left subclavian arteries
- Thoracic aorta
- Posterior & anterior intercostal arteries
- Lateral & superior phrenic arteries
Arteries of Upper Extremity
- Subclavian artery
- Axillary artery
- Brachial artery
- Radial artery
- Ulnar artery
- Deep palmar arch
- Superficial palmar arch
Arteries of the Abdomen
- Inferior phrenic artery
- Celiac trunk
- Left gastric artery
- Common hepatic artery
- Splenic artery
- Superior mesenteric artery
- Adrenal artery
- Renal artery
- Gonadal artery
- Lumbar arteries
- Inferior mesenteric artery
- Common iliac artery
- Superior vena cava branches
Veins of the Abdomen
- Inferior phrenic veins
- Hepatic veins
- Suprarenal veins
- Renal veins
- Gonadal veins
- Lumbar veins
- Inferior vena cava
- Median sacral vein
- Common iliac veins
- Hepatic portal vein
Blood Vessel Blockage
- Blockage of arteries can result from plaque formation.
- The steps of plaque development include endothelium irritation, fatty streak formation, plaque enlargement, and plaque rupture.
Lab Activities
- Students will complete labeling worksheets and a post-lab quiz.
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Description
This lab exercise explores the anatomy of blood vessels, focusing on the structure and function of arteries, veins, and capillaries. Students will learn about the layers of blood vessels and the role of endothelial cells in circulation.
