Multiple Choice
The sheets of peritoneal membrane that hold the digestive tract in place are called ________.
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1. Introduction to Anatomy & Physiology
Introduction to Organ Systems
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
The openings of which vessels are visible in the left atrium?
A
Pulmonary veins
B
Coronary arteries
C
Superior vena cava
D
Aorta
Verified step by step guidance1
Understand the anatomy of the heart: The left atrium is one of the four chambers of the heart, and its primary function is to receive oxygenated blood from the lungs via the pulmonary veins.
Identify the vessels associated with the left atrium: The pulmonary veins are the only vessels that open into the left atrium, as they transport oxygen-rich blood from the lungs to the heart.
Clarify the role of other vessels mentioned: The coronary arteries supply blood to the heart muscle itself, but they do not open into the left atrium. The superior vena cava carries deoxygenated blood to the right atrium, not the left atrium. The aorta is the main artery that carries blood away from the left ventricle, not the left atrium.
Eliminate incorrect options: Based on anatomical knowledge, the coronary arteries, superior vena cava, and aorta do not open into the left atrium. Only the pulmonary veins are visible in the left atrium.
Conclude the correct answer: The openings of the pulmonary veins are visible in the left atrium, as they are the vessels responsible for delivering oxygenated blood from the lungs to this chamber.
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