Lymphatic and Immune System

Which of the following does NOT play an important role in returning lymph to the bloodstream?

• contraction of skeletal muscles

• pumping action of the heart

• pressure changes within the thoracic cavity

• presence of valves within larger vessels

The lymph organ that programs T cells and functions primarily during childhood and adolescence is the

• spleen

• thymus

• tonsils

• appendix

Which of the following is NOT an example of innate or nonspecific immunity?

• mucus

• enzymes in tears

• inflammatory response

• production of antibodies

The body's first line of defense against pathogens is

• phagocytes

• fever

• inflammatory response

• skin and mucous membranes

The specific defenses of the immune system

• issue a specific attach to particular foreign substances

• are innate defenses

• include skin and mucous membranes

• are the body's first line of defense

Which of the following statements is NOT correct?

• B cells develop in the bone marrow

• lymphocytes are tolerant of self-antigens

• humoral immunity is provided by antibodies

• T cells develop in the spleen

Which of the following is NOT a method by which antibodies inactivate antigens?

• agglutination

• neutralization

• chemotaxis

• precipitation

released by mast cells during an allergic reaction

• histamine

• acetylcholine

• sodium

Tags

NGSS.HS-LS1-3

large white blood cells that "eat" foreign invaders

• nucleus

• chloroplast

• mitochondria

• macrophages

Tags

NGSS.MS-LS1-3

any harmful or disease-causing organism

• pathogen

• antigens

• antibodies

• T cells

Tags

NGSS.HS-LS4-5