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How many chambers in a lamprey heart?
The heart of a lamprey looks similar to that of modern fish in a sense. It is a two chambered heart with a single atrium and a single ventricle. The atrium of the heart is proceeded by a sinus venosus, which isn't considered an actual chamber but rather pre-heart chamber. Then after the ventricle we have a conus arteriosus that again isn't considered to be a chamber of the heart but rather a post-heart chamber. The blood flow through the heart is a one way path like that of modern day fishes.
Is the heart lies anterior to the sternum and posterior to the vertebral column?
Answerthe base of the heart is the widest part; the apex is the narrow end, which points toward the left hip. the apex of the heart contact the chest wall just below the lift nipple: the heartbeat is most clearly felt here and the site is called the point of maximal intensity(PIM).Mary Porterthat answer most definitely did not answer the question that was askedNo you have it backwards, the heart likes posterior (behind) the sternum and anterior (in front) of the vertebral column. If you are getting the terms confused just think of the phrase your mom used to say "If you do that again I'll hit you in your posterior (your butt)"
What chamber of the heart is most often the first to fail from increased stress or reduced oxygen supply?
Left ventricle
What is the most powerful chamber or major chamber of the heart?
Left ventricle is the strongest and most important chamber of the heart. It receives oxygenated blood from left atrium, and pumps it into the aorta. Thus supplying the body with oxygenated blood. When this is said, all of the chambers are necessary for proper function of the heart.
Which heart chamber has the thickest walls?
The left ventricle, it works the hardest and needs the most muscle mass.
