APR Lymphatic System
Axillary Nodes
Axillary nodes
Breast and Axillary Nodes
Breast and axillary nodes
Complete the sentences describing the formation and flow of lymph.
Pressures occurring at capillary beds lead to filtration and reabsorption of fluid between the tissue fluid and blood in the capillaries. A result of these pressures is an increase in tissue fluid because filtration exceeds reabsorption. The increase in tissue fluid leads to an increase in the hydrostatic pressure of tissue fluid, forcing fluid into the lymph capillaries. Fluid then flows through lymphatic vessels toward the lymphatic trunks. The lymphatic vessels structurally resemble small veins and have a low hydrostatic pressure. Other mechanisms are needed to aid in the flow of lymph back to the circulation. The contraction of skeletal muscles provides a muscular pump which squeezes these vessels, increasing pressure in them. When the muscle relaxes there are valves inside the vessels which prevent backflow. This return of fluid is also assisted by the respiratory pump which generates low pressure in the thoracic cavity and high pressure in the abdominal cavity. The lymph then is moved from the lymphatic vessels to the blood vessels.
Indicate where in the lymph nodes the listed cell types are found by dragging labels to the appropriate boxes. Some labels are used more than once.
SUBCAPSULE -Macrophages, B cells MEDULLA -Macrophages, T cells GERMINAL CENTERS OF CORTEX -B cells
Match the following statements with the appropriate tissue sample.
TONSILS -Found in oral cavity and throat -Functions to react to ingested antigens present in the mouth SPLEEN -Located in the abdomen -Filters the blood LYMPH NODE -Found along lymphatic vessels -Filters lymph
After filling in the blanks with the correct lymphatic structure, place the sentences in order of structure location from superior to inferior.
The tonsils trap foreign material of the air we breath and facilitate in identification of antigens by lymphocytes. The thymus gland secretes hormones that promote differentiation, growth and maturation of T-lymphocytes. The spleen is a reservoir for red and white blood cells.
After completing each of the sentences, place the sentences in order to make a coherent paragraph about the tonsils.
There are three tonsils associated with the mouth and throat. In order from superior to inferior they are: The pharyngeal tonsil, which is also known as the adenoids. The palatine tonsils, which are visible through the mouth. The lingual tonsils, which are located at the base of the tongue.
