Answer:With this system, blood always flows in only one direction inside the heart. There are also valves at the bottom of the large arteries that carry blood away from the heart: the aorta and the pulmonary artery. These valves keep the blood from flowing backward into the heart once it has been pumped out.
Explanation:
Answer:
What do you mean
Explanation:
Well someone is not meant to have low self-esteem and then start thinking
The golgi bodies are represented by Z
D: heart rate
PCRABS is a good acronym to remember the skill related fitness components
Power. Co ordination. Reaction time. Agility. Balence. Speed
