★ Heart Anatomy Quiz
Un-oxygenated blood enters the right atrium from the top of the heart.
A. inferior vena cava
B. superior vena cava
C. aorta
Select your answer:
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Essential Nutrients › ViewFiber has many benefits, such as…
A. Strengthening teeth
B. Helps with our digestive system
C. Regulate body fluids
D. Cushions joints and spinal cord
Meiosis and intro to Genetics › View
Which of the following is NOT a genotype?
A. heterozygous
B. a trait
C. Bb
D. homozygous recessive