Lymphatic System

Foreign proteins that gain access to the body through cuts and scrapes, through the digestive or circulatory systems, or through the urinary and reproductive systems are called ____.

• mineralocorticoids

• immunoglobulins

• antigens

• antibodies

Special lymphatic vessels that absorb fats and transport them from the digestive tract to the blood are called ____.

• peyer"s patch

• vili

• trabeculae

• lacteals

Capsular extensions of the lymph node, which divide the node internally into a series of compartments with germinal centers, are called ____

• vili

• trabeculae

• lymph sinuses

• lacteals

Chemicals released by sensitized T lymphocytes to keep us healthy are known as ____.

• antigens

• macrophages

• memory cells

• lymphokines

The macrophages of the aggregated lymphatic follicles found in the walls of the small intestine destroy bacteria and prevent the bacteria from infecting and penetrating the walls of the intestine. These aggregated follicles are also known as ____.

• Peyer's patches

• chyme

• chyle

• interstitial fluid

Immunity that can be acquired naturally, such as when we are exposed to a bacterial or viral infection, or that can be acquired artificially, such as when we receive a vaccine, is known as ____.

• antigen presentation

• passive immunity

• active immunity

• congenital immunity

Cells that are descendants of activated T and B cells produced during an initial immune response, which exist in the body for years, enabling it to respond quickly to future infections, are known as ____.

• memory cells

• killer B's

• suppressor T cells

• killer T cells

Lymphocytes that produce antibodies and provide humoral immunity, which is particularly effective against circulating bacterial and viral infections, are called ____.

• A lymphocytes

• B lymphocytes

• D lymphocytes

• T lymphocytes

The lymphocytes that kill virus-invaded and cancerous body cells and are also involved in graft rejections are the ____.

• B cells

• plasma cells

• memory cells

• killer T cells

The main collecting duct of the lymphatic system is the left lymphatic duct, also known as the ____.

• jugular trunk

• thoracic duct

• subclavian artery

• trabeculae