Answer:
Chambers
Explanation:
Oxygen-rich blood travels from the lungs to the left atrium, then on to the left ventricle, which pumps it to the rest of the body. The heart pumps blood to the lungs and to all the body's tissues through a sequence of highly organized contractions of the four chambers.
Explanation:
The spinal cord functions primarily in the transmission of nerve signals from the motor cortex to the body, and from the afferent fibers of the sensory neurons to the sensory cortex. It is also a center for coordinating many reflexes and contains reflex arcs that can independently control reflexes.
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