What chambers of the heart receive blood from the body, ventricles or atria? ___________ What chambers of the heart pump blood o
ut of the heart, ventricles or atria? ___________ Which heart chamber has the thickest muscle wall? 20.Why is it necessary for the chamber in the above question to have a thicker muscle wall? ________________________________________________________ Which blood vessel brings oxygen poor blood to the heart from the rest of the body? ________________________________________________________ Which blood vessel takes blood from the heart and sends it to the lungs? Which blood vessel takes oxygen-rich blood from the lungs and brings it back to the heart? ________________________________________________________ Which blood vessel sends oxygen-rich blood from the heart to the rest of the body? ________________________________________________________ How do the valves control the flow of blood through the heart? ________________________________________________________________ Answer the Conclusion questions.
7.Four heart valves control the flow of blood through the heart. They act as one-way doors, opening to let blood exit or enter a chamber, then closing to keep blood from flowing backward.
Poop. I don't really know what you are asking but the excretory system removes the stuff from our stomach that we cant use or stuff that already has all of the nutrients that we need removed. Hope this helps
Tiered pricing is a method where sellers segment the pricing of their products or services to suit their various target markets. By optimizing and changing up your offering between each of the segments, you appeal to a wider (and more varied) customer base as you provide for different demand rates and price points.
The digestive and respiratory tracts include the pharynx. The pharynx is found at the back part of the throat and is connected to the mouth and the nasal cavity. It then extends to connect into the esophagus and larynx. The pharynx serves as passageway for air during respiration and food for digestion.
