Lymphatic System (21) Flashcards
Name the primary lymphoid structures.
THYMUS & RED BONE MARROW
Name the secondary lymphoid structures.
LYMPH NODES (INGUINAL, AXILLARY, CERVICAL), TONSILS, SPLEEN, LYMPHATIC NODULES, MALT
Which lymphatic structures have a capsule/which do not?
LYMPH NODES & SPLEEN DO. TONSILS, LYMPHATIC NODULES, & MALT DO NOT.
Know the lymphatic duct drainage pattern (which areas of the body are drained by which duct?).
RIGHT LYMPHATIC DUCT: RIGHT SIDE OF HEAD, NECK, UPPER LIMB, THORAX. THORACIC DUCT: LEFT SIDE OF HEAD, NECK, UPPER LIMB, THORAX, & EVERYTHING ELSE
Understand how the thymus changes throughout a person’s lifetime.
SHRINKS AND MAYBE DISAPPEARS
Differentiate between afferent and efferent lymphatic vessels in lymph nodes.
AFFERENT – ARRIVES; EFFERENT – EXITS
What is the role of skeletal muscle contractions & valves in lymphatic circulation?
SKELETAL CONTRACTION, PULSATION OF BLOOD, & CONTRACTION OF SMOOTH MUSCLE HELP PROJECT LYMPHS UP VESSELS
What is lymph (what fluid is it most similar to)?
INTERSTITIAL FLUID
Describe the structure of lymphatic capillaries.
CLOSE-ENDED VESSELS THAT ABSORB I.T. FLUID BY WAY OF HYDROSTATIC PRESSURE; LARGER IN DIAMETER THAN BLOOD CAPS.; ANCHORING FILAMENTS
Three types of tonsils – where are they located?
PHARYNGEAL: POSTERIOR WALL OF NASOPHARYNX; CALLED ADENOIDS WHEN ENLARGED. PALATINE: POSTEROLATERAL REGION OF ORAL CAVITY; VISIBLE. LINGUAL: POSTERIOR ONE-THIRD OF TONGUE (BASE)
Bacteria:
PROKARYOTIC CELLS, HAVE POLYSACCHARIDE CAPSULE THAT RELEASES AGENTS
Viruses:
NOT A CELL, COMPOSED OF DNA/RNA, OBLIGATE INTRACELLULAR PARASITES,
Fungi:
EUKARYOTIC, HAVE CELL WALL
Protozoans:
EUKARYOTIC, DO NOT HAVE CELL WALL
Multicellular parasites:
EUKARYOTIC, NOT MICROSCOPIC ORGANISMS, TAKE HOST’S NOURISHMENT
