Exam 31: Lymphatic System

Lymphatic vessels originate as microscopic, blind-end vessels called lymphatic capillaries.

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

The semilunar valves of the lymph vessels are formed from folds of the tunica intima.

Lymph capillaries called lacteals are located in the:

The lymph nodes located in the neck along the sternocleidomastoid muscle are called the:

Cancer of the breast is one of the most common forms of malignancy in women.

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

Match each structure or organ of the lymphatic system with its corresponding function or description. -Duct that carries only about one fourth of the lymph back to the blood

The lymphatic system, like the circulatory system, is a closed circuit.

The tubal tonsils are located near the base of the eustachian tubes.

The tonsils located near the base of the tongue are called the _____ tonsils.

The cutaneous lymphatic plexus drains lymph from the:

Relative to the rest of the body, the thymus is largest at _____ years of age.

The high degree of permeability of lymphatic capillaries allows particulate matter to enter the capillary.

What is the clinical significance of the anastomoses that occur between superficial lymphatics from both breasts across the middle line?

Lymphatics have thicker walls than do veins.

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

Which of the following is not true of lymph nodes?

Compare and contrast the structures of veins and lymphatics.

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