The vessels that carry blood away from the heart are called?.
Sinusoids.
Veins.
Capillaries.
Arteries.
The Correct Answer is D
Choice A rationale:
Sinusoids are a type of capillary found in some organs, such as the liver, bone marrow, and spleen. They are not vessels that carry blood away from the heart.
Choice B rationale:
Veins are blood vessels that carry blood from the body back into the heart.
Choice C rationale:
Capillaries are delicate blood vessels that deliver blood, nutrients and oxygen to cells throughout the body. They do not carry blood away from the heart.
Choice D rationale:
Arteries are blood vessels that carry oxygenated blood away from the heart to the body.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
Innate immunity is not an acquired immunity. Acquired immunity refers to immunity that develops after exposure to a specific pathogen.
Choice B rationale:
Innate immunity does not retain a memory of a pathogen after defeating it. This is a characteristic of adaptive immunity.
Choice C rationale:
Innate immunity does not offer protection against a particular pathogen. It provides a general defense against a wide range of invaders.
Choice D rationale:
Innate immunity is present at birth. It provides a fast response that involves first- and second-line defenses.
Correct Answer is B
Explanation
Choice A rationale:
While veins do convey blood back to the heart, this is not the reason they are called capacitance vessels.
Choice B rationale:
Veins are referred to as capacitance vessels because they can stretch and contain about 60% of the body’s blood volume.
Choice C rationale:
Although veins contain one-way valves, this characteristic does not define them as capacitance vessels.
Choice D rationale:
Veins can constrict, but this is not the primary reason they are known as capacitance vessels.
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