blood vessel anatomy
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Blood Vessel Anatomy. Starter- write your answer!. Explain how this patient’s cardiac output would be affected (if at all) by the electrical activity in their heart. Use the terms: starling’s law stroke volume cardiac output. - PowerPoint PPT PresentationTRANSCRIPT
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Blood Vessel Anatomy
![Page 2: Blood Vessel Anatomy](https://reader035.vdocuments.net/reader035/viewer/2022062323/56816284550346895dd2f286/html5/thumbnails/2.jpg)
Starter- write your answer!
• Explain how this patient’s cardiac output would be affected (if at all) by the electrical activity in their heart.
• Use the terms: – starling’s law– stroke volume– cardiac output
![Page 3: Blood Vessel Anatomy](https://reader035.vdocuments.net/reader035/viewer/2022062323/56816284550346895dd2f286/html5/thumbnails/3.jpg)
![Page 4: Blood Vessel Anatomy](https://reader035.vdocuments.net/reader035/viewer/2022062323/56816284550346895dd2f286/html5/thumbnails/4.jpg)
Essentials of Human Anatomy and Physiology, 9eby Elaine N. Marieb
Copyright © 2009 Pearson Education, Inc.,publishing as Pearson Benjamin Cummings.
Figure 11.9b Structure of blood vessels. (b) The walls of arteries and veins are composed of three tunics: the tunica intima (endothelium underlain by a basement membrane), tunica media (smooth muscle and elastic fibers), and tunica externa (largely collagen fibers).
Tunica intima• Endothelium
• Loose connective tissue
Tunica media
Tunica externa
Artery VeinLumen Lumen
Internal elastic lamina
External elastic lamina
Valve
Endothelium
Capillarynetwork
Capillary
ArterioleVenule
Basementmembrane
(b)
![Page 5: Blood Vessel Anatomy](https://reader035.vdocuments.net/reader035/viewer/2022062323/56816284550346895dd2f286/html5/thumbnails/5.jpg)
Essentials of Human Anatomy and Physiology, 9eby Elaine N. Marieb
Copyright © 2009 Pearson Education, Inc.,publishing as Pearson Benjamin Cummings.
![Page 6: Blood Vessel Anatomy](https://reader035.vdocuments.net/reader035/viewer/2022062323/56816284550346895dd2f286/html5/thumbnails/6.jpg)
Essentials of Human Anatomy and Physiology, 9eby Elaine N. Marieb
Copyright © 2009 Pearson Education, Inc.,publishing as Pearson Benjamin Cummings.
Figure 11.9b Structure of blood vessels. (b) The walls of arteries and veins are composed of three tunics: the tunica intima (endothelium underlain by a basement membrane), tunica media (smooth muscle and elastic fibers), and tunica externa (largely collagen fibers).
Tunica intima• Endothelium
• Loose connective tissue
Tunica media
Tunica externa
Artery VeinLumen Lumen
Internal elastic lamina
External elastic lamina
Valve
Endothelium
Capillarynetwork
Capillary
ArterioleVenule
Basementmembrane
(b)
![Page 7: Blood Vessel Anatomy](https://reader035.vdocuments.net/reader035/viewer/2022062323/56816284550346895dd2f286/html5/thumbnails/7.jpg)
Veins• Veins have valves to prevent
backflow of blood
• Prevent pooling– Pooling can create a clot that
can get stuck in the pulmonary artery (pulmonary embolism)
• Skeletal muscle contractions help venous return
https://www.youtube.com/watch?v=49jUyBu4M1Q&list=LPW8ZlZW8ZoPE&index=1&feature=plcp
![Page 8: Blood Vessel Anatomy](https://reader035.vdocuments.net/reader035/viewer/2022062323/56816284550346895dd2f286/html5/thumbnails/8.jpg)
Vericose Veins• Common in people who– stand for long periods of time– are obese or pregnant
• Occur when blood pools in the veins due to inactivity or low venous pressure
https://www.youtube.com/watch?v=7Qs6iWSGzZE&feature=related start at 25 sec
![Page 9: Blood Vessel Anatomy](https://reader035.vdocuments.net/reader035/viewer/2022062323/56816284550346895dd2f286/html5/thumbnails/9.jpg)
Cover the section on arthrosclerosis and
arteriolesclerosis (on study guide)
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Capillary Beds (see fig. 11-11 in book)
• Precapillary sphincters- ring of smooth muscle, regulates blood flow through capillary beds– When open blood flows into
capillaries diffusion occurs – When closed blood flows
from arteriole to venule no diffusion occurs