bio assignment 4

Which of the following are functions of the lymphatic system?

Fluid balance, absorption of amino acids, and defense against disease.

What is the name of the lymphatic tissue located in the small intestine and appendix?

Peyer’s patches

T lymphocytes mature in the ____________.

thymus gland.

How can normal flora be barriers to entry?

They use up nutrients and release wastes, preventing pathogenic bacteria from gaining a foothold.

Complement is activated when ______________.

microbes enter the body

What are the first antibodies produced by a plasma cell?

IgM antibodies.

Phil was exposed to parasitic worms on a recent field trip to the tropics. Under these conditions, which antibody levels would be higher than normal?

IgE antibody levels

Billy was bitten by a rabid dog and had to receive the rabies immune globulin. What type of immunity does he have? 

artificial immunity through passive transfer.

When stung by a bee, Jackie goes into anaphylactic shock. This should be quickly treated with ____________.

epinephrine to counteract the reaction.

what is the definition of an antigen?

anything the immune system recognizes as foreign to the body

Which of the following is the correct order in the formation of antibodies?

antigen binds to BCR; B cell activated; B cell divides; plasma cells form

Shaun underwent a heart transplant without initial complications. However, over time, he developed progressive shortness of breath and fatigue. Diagnostic evaluation revealed fibrosis and narrowing of blood vessels in the transplanted heart. Doctors suspect immune system involvement in the deterioration of the organ.

What is the most likely explanation for Shaun's condition?

A gradual immune-mediated process leading to long-term damage and scarring in the organ.

Lymph is prevented from flowing backwards by _______________.

one-way valves

true or false, red pulp contains only red blood cells.

false

Which of the following are examples of secondary lymphatic structures?

lymph nodes, spleen, and tonsils.

Cytotoxic T cells attack and destroy _____________.

antigen-bearing cells

An exaggerated immune response to substances that do not ordinarily harm the body results in a/an _______________.

allergic response

Maternal antibodies crossing the placenta to the fetus is an example of _____________.

natural active immunity

Which of the following is not an autoimmune disease?

type II diabetes

True or false? IgA antibodies are found in body secretions such as saliva and milk.

true