Examlex
Distinguish among simple random samples, stratified random samples, and cluster samples.
Motor Pathways
Neural pathways that transmit impulses from the brain to control movements in the body.
Medulla
An area of the brainstem responsible for regulating vital functions, including breathing, heart rate, and blood pressure.
Heartbeat
The rhythmic contraction and expansion of the heart, which can be felt as a pulse, pumping blood through the circulatory system.
Respiration
The biological process involving the exchange of gases between an organism and its environment, essential for cellular respiration and energy production.
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