Graded A+ 2024/2025
B - ✔️✔️Which are the primary cells of the lymphatic system?
A) pyrogens
B) lymphocytes
C) mast cells
D) lymph nodes
E) phagocytes
A - ✔️✔️A foreign microorganism that may cause disease in humans is called a(n)
A) pathogen.
B) antigen.
C) antibody.
D) pathology.
E) plaque.
A - ✔️✔️The two collecting ducts that ultimately drain the lymphatic vessels are the
A) thoracic duct and right lymphatic duct.
B) lumbar duct and left lymphatic duct.
C) intestinal duct and left celiac trunk.
D) bronchomediastinal duct and subclavian duct.
E) thyrocervical trunk and bronchomediastinal duct.
E - ✔️✔️In the condition called ________, interstitial fluids accumulate in a region in
which drainage has been blocked.
A) lymphadenopathy
B) systemic lupus erythematosus
C) lymphoma
D) mononucleosis
E) lymphedema
B - ✔️✔️The group of lymphoid stem cells that migrates to the thymus and divides
repeatedly produces which type(s) of lymphocytes?
A) B cells
B) T cells
C) NK cells
D) T cells and B cells
E) B cells and NK cells
A - ✔️✔️________ are large lymphoid nodules that are located in the walls of the
pharynx.
A) Tonsils
B) Peyer patches
,C) Lymph nodes
D) Complements
E) Thymus glands
C - ✔️✔️The red pulp of the spleen contains large quantities of
A) lymphocytes.
B) neutrophils.
C) red blood cells.
D) platelets.
E) fibrous connective tissue.
C - ✔️✔️Lymphatic vessels, which exit the lymph node and carry the lymph toward the
venous system, are called
A) lacteals.
B) afferent lymphatic vessels.
C) efferent lymphatic vessels.
D) lymphatic trunks.
E) lymphatic ducts.
E - ✔️✔️Lymphoid nodules, such as the appendix, are composed of loose connective
tissue containing densely packed
A) Peyer patches.
B) basophils.
C) spleens.
D) neutrophils.
E) lymphocytes.
B - ✔️✔️The thymus gland is positioned
A) posterior to the thyroid gland.
B) posterior to the sternum.
C) inferior to the heart.
D) posterior to the trachea.
E) in the inguinal region.
C - ✔️✔️Splenic blood vessels and lymphatic vessels connect with the spleen at the
A) sinus.
B) medulla.
C) hilum.
D) cortex.
E) capsule.
E - ✔️✔️________ are clusters of lymphoid nodules located beneath the epithelial lining
of the intestines.
A) Adenoids
B) Lingual tonsils
C) Palatine tonsils
, D) Vermiform appendices
E) Peyer patches
D - ✔️✔️The wall structure of lymphatics and the flow of lymph through them are
comparable to those of
A) elastic arteries.
B) arterioles.
C) the vena cava.
D) veins.
E) muscular arteries.
D - ✔️✔️Within lymph nodes, fixed macrophages and dendritic cells remove at least
________ percent of antigens arriving in lymph.
A) 10
B) 25
C) 50
D) 80
E) 99
C - ✔️✔️Which of the following is a primary function of the lymphatic system?
A) circulation of nutrients
B) circulation of hormones
C) production, maintenance, and distribution of lymphocytes
D) production, maintenance, and distribution of plasma proteins
E) blocking the action of histamine
B - ✔️✔️Lymph returns to the venous circulation by way of emptying into the
A) right lymphatic duct.
B) subclavian veins.
C) inferior vena cava.
D) superior vena cava.
E) dural sinus.
D - ✔️✔️Lymph nodes
A) contain the largest collection of lymphoid tissue in the body.
B) are the site of T cell maturation.
C) stimulate lymphocyte stem-cell division.
D) purify lymph before it reaches the veins.
E) remove abnormal blood cells and components.
B - ✔️✔️The white pulp of the spleen contains large numbers of
A) red blood cells and platelets as well as vast stores of iron.
B) lymphocytes, which initiate immune responses.
C) eosinophils, which engage in immune surveillance.
D) lymphocytes, which act as stationary phagocytes.
E) antibodies that remain in reserve for the next antigen encounter.