Answer:
your arteries that are connected to your lungs are also connected to your heart and then you need to be in the vena cava which are connected to your heart as well so you need the veins
During the sympathetic reaction the blood flow is augmented
to the skeletal muscles and brain. Then the blood flow will diminished to the
bowel which may led to constipation. The person will perspire excessively and
may lead to dehydration which eventually may constrain bowel function.
Enzymes are regulated by more than the binding of small molecules. A second method that is used all the time by eucaryotic cells to regulate a protein's function is the covalent addition of a phosphate group to one of its amino acid side chains. These phosphorylation events can affect the protein in two important ways.
The organelle that acts like the brain or the control center in the cell in the nucleus.
Hope this helps!!! :D