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S. Anat 14
Lymphatic System
Question | Answer |
---|---|
Lymphatic system includes | Lymph, lymphatic vessels, lymph nodes, lymph nodules, spleen, thymus |
Fluid in lymphatic vessel | Lymph |
Lymph begins as | Filtrate |
Filtrate becomes from plasma in _____fluid | Interstitial |
Lymph helps maintain___ | BP |
Lymph vessels carry___ | Lymph |
Lymph vessels begin as blind/dead ended____ | Capillaries |
Blind/dead ended capillaries are called | Lymph capillaries |
Endothelial cells overlap lymph capillaries to create____to prevent | Flaps, fluid from moving out |
Specialized lymph capillaries in the villi of small intestines | Lacteals |
Lacteals absorb____soluble products | Fat |
Lymph in extremities flow via | Skeletal muscle pump |
Valves in skeletal muscle pumps made of endothelium from | Flowing down/backwards |
Lymph not in extremities is pushed toward heart by | Vasoconstriction of lymph vessels |
Creates pressure during breathing to push lymph from the vessels in the lunch and chest cavity | Respiratory pump |
Lymph all flows back into | Blood stream |
Vessels in lower body unite in from of L spine to form | Cisteria chyli |
Cisteria chili becomes___that travels along spine | Thoracic duct |
Thoracic duct unites with vessels of the left upper body and empty into___ | L subclavian vein |
Vessels of the Right upper body unite to form the | R lymphatic duct |
R lymphatic duct empties into | R subclavian vein |
Mainly consists of lymphocytes in a framework of connective tissue | Lymphatic tissue |
____migrate to lymphatic tissue and become activates | WBC |
Lymphocytes proliferate in response to ___in all lymphatic tissue | infection |
Has stem cells that produce most of the T lymphocytes | Thymus |
Masses of lymphatic tissue | Lymph nodes |
Lymph nodes are ___mm in diameter/length | 10-20 |
Lymph nodes are encapsulated in__ | Connective tissue |
Lymph nodes are found in groups along___ | Pathways/lymph vessels |
Flows toward the node | Afferent |
Flows away from the node | Efferent |
Lymph passes through, pathogens are phagoytized by resident/fixed lymphocytes | Macrophages |
Node may___when fighing infectin | Swell |
Smaller than nodes | Lymph nodules |
Lymph nodules are ___(encapsulated/un | Unencapsulated |
Lymph nodules are located just beneath___ | All mucosa |
Lymph nodules in small intestines | Peyers patches |
Lymph nodules found in pharynx | Tonsils |
Just beneath diaphragm, behind stomach covered by ribs | Spleen |
IN fetus produces RBC | Spleen |
After birth acts as large node except it acts on blood not lymph | Spleen |
After birth containes plasma cells the produce antibodies | Spleen |
After birth contains fixed macrophages | Spleen |
Fixed macgophages after birth (aka) | Reticuloendothelial cells (RE cells) |
After birth stores platelets and destroys them when no lponger useful | Spleen |
Not a vital organ in adults | Spleen |
People without a spleen are slightly more susceptible to ____and___ | Pneumonia, meningitis |
Inferior to they thyroid gland | Thymus |
Larger in fetus | Thymus |
Very small in adults | Thymus |
Produces T lymphocytes | Thymus |
Also has endocrine function (secretes hormone) | Thymus |
Necessary for immunological competence | Thymus |
THymic hormone enables ___ | T cells |
Recognize foreign antigens and thus provide immunity | T cells |
The ability to destroy pathogens to prevent infecton | Immunity |
Mutated cells can also be recognized as | Foreign |
Organ stransplants are also recognized as | Foreign |
The chemical markers on cell membranes that identiful cells | Antigens |
Immunity has __main components | 2 |
____immunity treats everything the same | Innate |
Nonspecific, no memory, doesn’t become more efficient with exposure | Innate memory |
Immunity barriers: keratinized epithelium | Epidermis |
Immunity barriers: prevent bacterial growth | Sebum |
Immunity barriers: antimicrobial made in the live epidermal cells | Defensins |
Immunity barriers: structural barrier | Mucous membrane |
Immunity barriers: sweep pathogens out to be swallowed | Ciliated epithelium |
Immunity barriers:enzyme in saliva and tears that destroy pathogens | Lysozymes |
Immunity barriers: in submucosa and subcutaneous tissue | WBC |
FOUnd in areolar connective tissue | WBC |
Release chemicals that contribute to inflammation | WBC |
Natural killer cells | Lymphocytes |
Found in blood, red marrow, spleen, and nodes | Lymphocytes |
Destroy pathogens and tumor cells by releasing chemicals like perforins | Lymphocytes |