A&P - Chapter 31 (Part 2) Flashcards
What is the structure of the lymph node?
Oval shaped
What are the 2 distinct functions of the lymphatic nodes?
- Defence functions
- filtration - Hematopoeisis
- maturation of some lymphocytes and monocytes
Why are lymph nodes important to cancer?
Because they are located around the body and can spread easily to other organs
What 2 lymphatic vessels drains the breast?
- Drains skin over the breast
- minus the skin of the areola and nipple - Drains underlying substances of breast, plus the skin of the areola and nipple
What percentage of lymph is found in the breast?
More than 85%
- axillary region
What are the 3 masses that make up tonsils?
- Palatine tonsils
- Pharyngeal tonsils
- Lingual tonsils
What tonsil is the largest one and most common to get infected?
Palatine tonsils
What are the functions of the tonsils?
Is to gather and remove pathogens entering the pharynx
- via the respiratory or digestive system
What are tonsils common to get?
Chronic infections
What can enlargement of pharyngeal tonsils do?
Impair breathing
Where are pharyngeal tonsils located?
Near the posterior opening of the nasal cavity
What is the primary organ of the lymphatic system?
Thymus
What is the role of the thymus?
Its hormones (thymosin) enable lymphocytes - T cells
Where is the thymus located?
In the mediastinum
Where is thymus most prominent?
In children
