Answer:
I know it's not D B A I think it's c it has to be
Hopefully this is right:
Comes in through superior and inferior vena cava, then enters right atrium, then tricuspid valve and into the right ventricle. Then the deoxygenated blood gets pumped through the pulmonary artery to the lungs. Oxygenated blood comes back through pulmonary vein and into left atrium. Then goes through mitral valve and into left ventricle which then pumps the blood through aorta.
Answer: b. DNA
Explanation:
DNA is a genetic material commonly found in all living beings. It is present in a thread like structure that is called as the chromosome. The DNA is double helical structure which exhibits the segments of small units called as the genes. The gene is a hereditary material which encodes for a particular protein. Each gene is responsible for determining a particular trait in living beings.
I don’t know if this is any help but the word oral is related to the mouth
Answer: Lymph node
Explanation:
The lymphatic system of the body works by filtering the blood and remove the harmful pathogen that is present in it.
There are several organs in the lymphatic system that works together at different sites in the body and helps body prevent and cure from infection.
Lymph nodes function to remove pathogen and debris from lymph and it is also referred as filters of lymph. The macrophages and dentritic cells kill the harmful pathogen in the blood.
Hence, the correct answer is option A
