**Question:**Amalumastat is a medication that causes the arteries to increase in diameter so more blood can flow through. Which layer of the artery is this medication targeting?**Options:**a. The tunica adventitia b. The tunica intima c. The tunica sclerosa d. The tunica externa e. The tunica media **Explanation:**This question is designed to assess knowledge of the anatomical layers of arterial walls and how medications can affect them. The relevant layer for increasing arterial diameter is typically the tunica media, which consists of smooth muscle that can contract or relax to change the vessel's diameter. Note: The option "c. The tunica sclerosa" is not a standard term for arterial layers, indicating a possible error or an attempt to test the student's alertness to detail.

There are mainly three types of blood vessels that are- arteries, veins and capillaries. The structure of each type is closely related to its function. As the heart contracts it forces blood into the large arteries from the ventricles. The blood drains into successively smaller arteries and finally the blood reaches the smaller branches the arterioles. This arterioles feed the capillary beds of tissues and body organs. Blood trains from the capillaries into veins that ultimately goes into the heart.The middle layer of the artery is called tunica media and it is the thickest layer. It is composed of connective tissue, elastin fibre. This layer is also uniform in diameter. It is comparatively thicker than that of veins and contain more elastic fibres. This layer is responsible for contraction and relaxation of arteries by decreasing or increasing the diameter of the blood vessel and responsible for increasing or decreasing blood pressure. Options are: A. The tunica adventitia is The outermost layer of the artery and it contain fibrous connective tissue. It is not responsible for increasing or decreasing of blood vessels. B. The tunica intima is very thin and made up of single layer of endothelial cells. It is the innermost layer and do not responsible for increasing or decreasing the diameter of the blood vessels. C. The tunica serosa is the outermost layer of digestive system not the blood vessels. D. The tunica externa is also known as tunica adventitia and it is not responsible for decreasing or increasing blood vessels. E. The tunica media is responsible for increasing or decreasing blood vessels because it contain connective tissue, smooth muscles and elastin fibre. Hence, option E is the right answer.

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Anatomy and Physiology

Amalumastat is a medication that causes the arteries to increase in diameter so more blood can flow through. Which layer of the artery is this medication targeting? a. The tunica adventitia O b. The tunica intima O c. The tunica sclerosa d. The tunica externa O e. The tunica media

Amalumastat is a medication that causes the arteries to increase in diameter so more blood can flow through. Which layer of the artery is this medication targeting? a. The tunica adventitia O b. The tunica intima O c. The tunica sclerosa d. The tunica externa O e. The tunica media

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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