Ch.15

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The pharyngeal tonsils are the ones commonly removed in a tonsillectomy.​

false

​Lymphatic capillaries are much smaller and less permeable than blood capillaries.

false

Efferent lymphatics exit the lymph node at the ____, a slight depression on one side.​

hilum

​ability to resist infection

immunity

antibodies

immunoglobulins

​The ____ trunk drains the head and neck.

jugular

​Virus-invaded body cells and cancerous body cells are targeted by ____ T cells.

killer

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

lacteals

​lymph vessels that absorb fats

lacteals

​The ____ tonsils are located at the back surface of the tongue at its base.

lingual

​The ____ trunk drains lymph from the lower extremities.

lumbar

​T cells bind to antigens that have been engulfed, digested, and presented on the surface of a(n) ____.

macrophage

​engulfs and digests antigens

macrophages

​disease-causing organism

pathogen

​lymph organ

spleen

​An abnormal enlargement of the spleen that can develop from infections is called ____.

splenomegaly

​The thoracic duct ultimately empties all of its lymph into the left ____ vein.

subclavian

​The ____ gland is a bilobed mass of tissue in the mediastinum along the trachea.

thymus

​The ____ is the site for lymphocyte maturation.

thymus

Leukemia is a disorder of the lymphatic system tissue that can be treated by a bone marrow transplant.

true

Memory cells are descendants of activated T and B cells produced during an initial immune response.​

true

​The primary function of the lymphatic system is to drain tissue spaces of protein-containing fluid that escapes from the blood capillaries.

true

The efferent vessels unite to form lymphatic ____.​

trunks

​produce antibodies

​B cells

​Immunoglobulin ____ is associated with allergic reactions, attacking allergy-causing antigens.

​E

​AIDS is caused by infection of ____ by HIV.

​T lymphocytes

swelling

​edema

​The bulk of our lymphoid tissue is located in the ____.

​lymph nodes

​These oval-shaped structures are found along the length of lymphatics.

​lymph nodes

The main collecting duct of the lymphatic system is the ____ duct.

​thoracic

​Antibodies are produced by____.

B lymphocytes

​Immunoglobulin ____, found in tissue fluids and plasma, attacks viruses, bacteria, and toxins.

G

​pharyngeal tonsils

adenoids

​foreign proteins

antigens

​Immunoglobulin ____ is found on the surface of B lymphocytes and is important in B cell activation.

D


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