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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 |