Answer:
The semilunar valves prevent backflow of blood into the ventricles.
Explanation:
The semilunar valves are valves found at the junction between the left ventricle and the aorta and also between the right ventricle and the pulmonary artery. They are cup-like in shape and prevent blood from flowing back into the ventricles which are the pumping chambers.
There are two types of semilunar valves. The aortic semilunar valves and the pulmonary semilunar valves. They are made up of the endocardial and connective tissue.
The closure of the semilunar valves causes the second heart sound detected on the stethoscope.
Diseases that arise from the semilunar valves are caused by its stenosis which is the narrowing of the valves and regurgitation where the heart valves can no longer hold firm enough to prevent the backflow of blood.
Answer:
is the spread of something more widely
Explanation:
An optopsy or checking for any wounds! Hope I helped
Answer:
Oxygen
Explanation:
Oxygen is the last electron acceptor in the electron transport chain, which considers oxidative phosphorylation. Without oxygen, the electrons will be upheld, in the long run causing the electron transport chain to stop. This will make the results of glycolysis go through aging as opposed to going to the citrus extract cycle. Without oxygen, oxidative phosphorylation (the electron transport chain) is inconceivable, however substrate-level phosphorylation (glycolysis) proceeds.
