Answer:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. The pulmonary vein empties oxygen-rich blood, from the lungs into the left atrium.
Explanation:
hope this helps...
and if u didn't get it its veins...
Answer:
Strong selection for change is acting on this gene.
Explanation:
Basketball is preformed in this picture
A change in friendship is not a physical sign of addiction it is a mental sign of depression
The hindbrain usually consists of three different parts; cerebellum, medulla and the pons.
The cerebellum is responsible for balance and muscle coordination.
The medulla ultimately controls unconscious activities such as breathing, blood flow and your heartbeat. It is situated next to the spinal cord.
The pons affect everyday activities such as dreaming, waking up and sleeping.
