Ch. 12 A&P Lymphatic System

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Excess accumulation of fluid, which impairs the exchange of materials within the tissues, is called _______.

edema

What does fever accomplish?

fever inhibits bacteria reproduction and speeds the repair process

Small proteins known as _______ are secreted by virus-infected cells to help defend cells that have not yet been infected.

interferons

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 one of the following is NOT a mechanism that aids lymph return to the heart?

the pumping action of the heart

Located overlying the heart

thymus gland

The lymphoid tissues that trap and remove bacteria that enter the throat are indicated by ________.

Label A

The tonsils are indicated by ________.

Label A

A lymph node is indicated by ______.

Label B

The thymus is indicated by _______.

Label B

Lymphatic collecting vessels are indicated by _______.

Label C

The lymphoid organ that destroys worn-out blood cells is indicated by _______.

Label C

The spleen is indicated by _______.

Label C

A lymph capillary is indicted by ________.

Label D

The Peyer's patches are indicated by _____.

Label D

Blood capillaries are indicated by _______.

Label E

The lymph tissue found within the walls of the small intestine are called ______.

Peyer's patches

The study of immunity is called ______.

immunology

The third line of defense involves the adaptive response mediated by _____.

lymphocytes

Harmful or disease-causing microorganisms from which nonspecific defenses protect the body are called ________.

pathogens

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

skin and mucous membranes

Vaccines are NOT for _______.

snaked bites

Filters and cleans the blood of bacteria, viruses, and other debris

spleen

Located on the left side of the abdominal cavity

spleen

The process by which neutrophils are squeezed through the capillary walls during the inflammatory process is called ______.

diapedesis

AIDS cripples the immune system by interfering with the activity of cells called __________.

helper T cells

Which one of the following is NOT an autoimmune disease?

AIDS

The lymph duct is indicated by ______.

Label A

Located in the pharynx (throat)

tonsils

The role of the ________ is to trap and remove bacteria or other foreign pathogens entering the throat.

tonsils

Trap and remove bacteria and pathogens entering the throat

tonsils

An ______ is any substance capable of mobilizing our immune system and provoking an immune response.

Antigen

What structure carries lymph into a lymph node?

afferent lymphatic vessel

Redness, heat, swelling, and pain are the four most common indicators of _____.

acute inflammation

Where is the thymus located?

beneath sternum overlying heart

Active immunity to tetanus, whooping cough, and polio can be artificially acquired when we receive ______.

vaccines

Lymph is largely composed of water that has escaped from ______.

Blood

Located in the wall of the small intestines

Peyer's patches

The thymus is most active during _____.

adolescence


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