Q. The "dub" sound is produced when

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Q. Backflow of blood into the atria is prevented through

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Q. Atria and the ventricles work

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Q. Blood donors must have a minimum hemoglobin per deciliters of

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Q. Time required to replace one unit of blood is

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Q. Minimum time required between blood donations is

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Q. One unit of blood is equivalent to

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Q. Characteristics essential for sensitivity includes

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Q. Detection and response to environmental changes occur in plants due to

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Q. Irritability is synonym to

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Q. Predictable reaction is known as

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Q. Upon a tactical stimuli, the impulses are transmitted from the receptor neurons to the

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Q. Effector neurons extend from spinal cord to the

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Q. Some sensory neurons have

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Q. Sensory neuron is not needed in

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Q. Sensory neurons are also known as

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Q. Carbon dioxide (CO₂) concentration is measured in blood through

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Q. In coordination system, Neurons

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Q. Below the cerebellum is

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Q. In the spinal cord, the impulse is transmitted from receptor neuron to relay neuron via

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