Answer:
The heart pumps blood through the circulatory system, delivering needed materials (glucose, oxygen) and picking up waste (carbon dioxide) from cells all over the body. Organs systems work together to efficiently and effectively provide all body cells with their basic needs to carry out life functions.
Answer: im not sure if im correct but i think it is c d e
Explanation:
Answer;
- Reticular activating system (RAS)
Explanation;
-The light of dawn and the buzz of an alarm clock lead to wakefulness through the reticular activating system.
-The RAS is a network of neurons that are located in the brain stem, they project anteriorly to the hypothalamus to mediate behavior, as well as both posteriorly to the thalamus and directly to the cortex for the activation of awake, desynchronized cortical EEG patterns.
True, it just lets cells divide unchecked, creating a mass of extra cells, for example with leukemia it is white blood cells
