I believe the answer is somatosensation
Answer:
Option D, aortic valve
Explanation:
The location of aortic valve i.e between the aorta and left ventricle, allows it to stop the blood from flowing back into the left ventricle.
The other options are incorrect as -
Pulmonary valve being located between the pulmonary artery and right ventricle, stop the blood from flowing back into the right ventricle.
The tricuspid valve and mitral valve stops the blood from flowing back into the right atria and left atria respectively.
Hence, option D is correct.
Explanation:
Radiotherapy to relieve symptoms is also known as palliative radiotherapy. Palliative radiotherapy aims to shrink cancer, slow down its growth or control symptoms. It doesn't aim to cure cancer.
