Chapter 12 exam review

The thymus is most active during

Adolescence

What structure carries lymph into a lymph node

Afferent lymphatic vessel

Which is NOT one of the nonspecific body defenses?

Antibody production

Where is the thymus located?

Beneath sternum overlying heart

Lymph is largely composed of water that has escaped from

Blood

The adaptive (specific) defense system

Issues an attack specific to particular foreign substances

Lymph from the left arm returns to the heart through the

Left subclavian vein

The right lymphatic duct collects lymph from the

Right arm

The body's first line of defense against the invasion of disease-causing microorganisms is

Skin and mucous membranes

What lymphoid organ stores platelets and acts as a blood reservoir?

Spleen

Which lymphatic organ's major job is to destroy worn-out red blood cells and return some of the products to the liver

Spleen

Which is NOT a mechanism that aids lymph return to the heart?

The pumping action of the heart

Which lymphoid tissues trap and remove bacteria entering the throat?

Tonsils

Mucosa-associated lymphatic tissues (MALT) includes the

Tonsils, appendix, & peyer's patches

The lymph tissues found within the walls of the small intestine are called

Peyer's patches