section 5.3: The blood
5.3 Essential Questions: The Blood
1.What body systems function to protect the human body?
The Respiratory, Circulatory, Digestive, Immune, and Skeletal
2.How does the structure of the lymphatic system relate to its function?
The lymph nodes are very thin-walled, so as to facilitate the lymph to easily pass through and drop off debris in the blood (worn out red blood cells, bacteria, viruses, etc.)
3.What is an antigen?
A foreign substance that produces an immune response in the body.
4.What is an antibody?
A particle produced by the body that marks foreign trespassers so that white blood cells can attack and destroy the foreigners.
5.How do circulating antibodies protect a person from receiving incompatible blood during a transfusion?
They target the antigens that they have not been exposed before so that the person does not get a disease from a foreign trespasser.
6.What is specific immunity?
Having certain cells/antibodies that have been exposed to a certain pathogen before so that they can specifically target that pathogen if it enters the body again.
7.What role do lymphocytes play in specific immunity?
Once a lymphocyte comes into contact with a pathogen, it clones and multiplies into multiple lymphocytes, some of which produce antibodies, and some become memory cells, so that the body can react to a specific pathogen if it enters the body again.
8.How does your body react the second time it is exposed to a particular antigen?
The antigen is detected by the immune system, which begins to produce more antibodies and more white blood cells. The antibodies work to mark and target the antigens, while the white blood cells work their hardest to destroy and get rid of the antigens.
1.What body systems function to protect the human body?
The Respiratory, Circulatory, Digestive, Immune, and Skeletal
2.How does the structure of the lymphatic system relate to its function?
The lymph nodes are very thin-walled, so as to facilitate the lymph to easily pass through and drop off debris in the blood (worn out red blood cells, bacteria, viruses, etc.)
3.What is an antigen?
A foreign substance that produces an immune response in the body.
4.What is an antibody?
A particle produced by the body that marks foreign trespassers so that white blood cells can attack and destroy the foreigners.
5.How do circulating antibodies protect a person from receiving incompatible blood during a transfusion?
They target the antigens that they have not been exposed before so that the person does not get a disease from a foreign trespasser.
6.What is specific immunity?
Having certain cells/antibodies that have been exposed to a certain pathogen before so that they can specifically target that pathogen if it enters the body again.
7.What role do lymphocytes play in specific immunity?
Once a lymphocyte comes into contact with a pathogen, it clones and multiplies into multiple lymphocytes, some of which produce antibodies, and some become memory cells, so that the body can react to a specific pathogen if it enters the body again.
8.How does your body react the second time it is exposed to a particular antigen?
The antigen is detected by the immune system, which begins to produce more antibodies and more white blood cells. The antibodies work to mark and target the antigens, while the white blood cells work their hardest to destroy and get rid of the antigens.