Exam 23: Lymphatic System

The thymus undergoes involution during:

Interstitial fluid fills the spaces between the cells.

Thymosin enables lymphocytes to develop into mature T cells,which attack foreign or abnormal cells.

The lymph with the highest concentration of protein is found in the right lymphatic duct.

The fetal thymus forms immature lymphocytes,which then move to the bone marrow for the final stages of lymphocyte development before birth.

Peyer patches are isolated nodules of lymphatic tissue in the intestinal wall.

Patients with immunodeficiencies such as AIDS often develop a malignancy of lymphoid tissue.

The lymph nodes located just above the bend of the elbow are called the _____ lymph nodes.

The breast-the mammary gland and surrounding tissue-is drained by the:

The size of the thymus is the largest at:

The spleen is not classified as a vital organ.

Match each structure or organ of the lymphatic system with its corresponding function or description. -isolated nodules of lymphatic tissue in the intestinal wall

Small aggregates on lymphatic tissue are found throughout the body,especially in connective and muscle tissue.

The high concentration of protein in the thoracic duct results from the protein-rich lymph that drains from the:

Match each body location with the corresponding group of lymph nodes. -inguinal lymph nodes

The spleen removes imperfect platelets from the blood.

The "beaded" appearance of lymph vessels is caused by bands of smooth muscle tissue surrounding the vessel.

The reason the red pulp of the spleen is red is that it contains a great deal of blood.

Lymphatic capillaries that operate in the villi of the small intestine are called lacteals.

Compare and contrast mechanisms for the movement of lymph through lymphatic vessels with the movement of blood through veins.