Answer:
Nitrogen about 77 percent of the atmosphere is composed of nitrogen
Answer;
-Pectinate muscles
Explanation;
-Pectinate muscles are shaped a little like hair, and their function is maxium atrial contraction with minimal muscle mass.The pectinate muscles (musculi pectinati) are parallel ridges in the walls of the atria of the heart. They are so-called because of their resemblance to the teeth of a comb as in pecten.
-The pectinate muscles are ridge like elevations of muscle. They are parallel to each other and resemble teeth of a comb. They are easily observed inside the right atrium.
the tiny blood vessels surrounding the alveoli are called capillaries.
the capillaries have thin walls and are connected to the larger blood vessels ( veins) and they bring oxygen to the heart threw oxygenated blood.
Answer:
C. Repolarization would occur, but much more slowly.
Explanation:
Repolarization is the change in membrane potential that returns it to a negative value just after the depolarization phase of an action potential has changed the membrane potential to a positive value. Sodium channels slow down this process.
Using photosynthesis, which consists of a series of chemical reactions that require carbon dioxide and water, and store chemical energy in the form of sugar. Light energy from light drives the reactions. Oxygen is released into the atmosphere as a byproduct of photosynthesis.
<span>This is the equation for photosynthesis: 6 CO2 + 6 H2O → 6(CH2O) + 6 O<span>2</span></span>
