Term
| Where do large lymphatic vessels contain smooth muscle? |
|
Definition
| tunica media and tunica adventitia |
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|
Term
| Where are non-encapsulated nodular lymphoid tissue located? |
|
Definition
| mucosa and submucosa of digestive and respiratory tract; MALT |
|
|
Term
| What are the two types of non-encapsulated lymphoid tissue? |
|
Definition
|
|
Term
| What is an example of partially encapsulated lymphoid tissue? |
|
Definition
|
|
Term
| What epithelium covers the palatine tonsil? |
|
Definition
| stratified squamous nonkeratinized epithelium |
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Term
| What lymphocyte does the thymus gland give rise to? |
|
Definition
|
|
Term
| What are the fully encapsulated lymphoid tissue? |
|
Definition
| thymus, lymph nodes and spleen |
|
|
Term
| What does the thymus secrete? |
|
Definition
| thymic hormones; development of immunologically competent lymphocytes |
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|
Term
| The thymus if formed of how many lobes and what are each lobe divided into? |
|
Definition
| 2 lobes, divided paritially by septa or trabeculae into lobules |
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|
Term
| Are there any lymphatic nodules in the thymus? |
|
Definition
| there are densely packed small lymphocytes in the cortex of lobules, yes? |
|
|
Term
| What does the medulla of thymic lobules contain? |
|
Definition
| epithelial reticular cells and Hassall's corpuscles |
|
|
Term
| What are Hassall's corpuscles made of? |
|
Definition
| acidophilic bodies in medulla of thymus; degenerating epithelial reticular cells |
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|
Term
| What do lymph nodes act as? |
|
Definition
|
|
Term
| What is the stroma of lymph node formed of? |
|
Definition
| capsule, trabeculae, reticular CT |
|
|
Term
| What does the parenchyma of lymph nodes contain? |
|
Definition
| outer cortex, inner medulla with a paracortical zone in between them (T lymphocytes) |
|
|
Term
| What does the medulla in the parenchyma of lymph nodes? |
|
Definition
|
|
Term
| What is the circulation of lymph in lymph nodes? |
|
Definition
| subcapsular lymph sinuses-cortical/trabecular sinuses-medullary sinuses-efferent lymphatics |
|
|
Term
| Where are the lymph sinuses located? |
|
Definition
| subcapsular, cortical/trabecular, and medullary lymph sinuses |
|
|
Term
| What does the spleen filter? |
|
Definition
|
|
Term
| What does the capsule of the spleen contain? |
|
Definition
|
|
Term
| What is the function of the smooth muscle in the capsule of the spleen? |
|
Definition
| to pump blood into circulation in cases of blood loss |
|
|
Term
| What is the parenchyma of spleen is formed of? |
|
Definition
|
|
Term
| What does the white pulp contain? |
|
Definition
| B lymphocytes, splenic nodules, central artery |
|
|
Term
| What is the characteristics of the spleenic central artery? |
|
Definition
| eccentric, surrounded by T lymphocytes, white pulp |
|
|
Term
| Where are T lymphocytes located in the spleen? |
|
Definition
| periarteriolar lymphocytic sheath (PALS) |
|
|
Term
| What is red pulp made of? |
|
Definition
| splenic cords and blood sinusoids |
|
|
Term
| Splenic blood sinusoids are lined by what? |
|
Definition
| fenestrated endothelial cells and macrophages |
|
|
Term
| What do the splenic cords contain? |
|
Definition
| B lymphocytes, plasma cells, & RBCs |
|
|
Term
| Where does blood pass in closed circulation of the spleen? |
|
Definition
| penecillar arteries to blood sinousoids |
|
|
Term
| Where does blood flow in open circulation of spleen? |
|
Definition
| penecillar arteries to spaces between blood sinousoids to trabecular vein to splenic vein |
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