Answer:
Arteries carry blood away from the heart; veins carry blood back to the heart.
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole: in this stage, the ventricles is relaxed and would be filled with blood.
Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
The best description for arteries and veins is that arteries carry oxygenated blood away from the heart to other parts of the body such as brain, lungs, tissues, etc; veins carry blood that is low in oxygen content back to the heart.
The answer is HIV. Hiv or human immunodeficiency is a virus that can weaken the body's immune system. Infection with HIV causes a life-threatening illness called AIDS also as immunodeficiency syndrome.
Most people are allergic to eggs, peanuts, milk, shellfish, wheat, and soy. Precautions you can take is to not cross contaminate, and not eat any foods your allergic to and always carry and Epi pen. Symptoms of a food allergy may be throwing up, hives, rashes, digestive problems, throat closing up, tingling lips, nausea, diarrhea, indigestion. A food allergy can last anywhere from a few minutes to two days long.
Strength training twice a week will help you develop muscles and increase bone strength
