Week 1 steeplechase Flashcards
What are the lymph nodes associated with the trachea and lungs of the dog?
mediastinal nodes, tracheobronchial nodes, pulmonary nodes
What do the haemal nodes sit on top of?
The renal sinister
What is the anatomy of the spleen?
Spleen nodule contains white spleen pulp
Red spleen pulp contains sinusoids
Where does the thymus originate from?
Paired pharyngeal pouches
What is the anatomy of the thymus?
Contains a connective tissue capsule with lobules containing cortex and medulla
rapidly dividing lymphocytes move outwards from the medulla to the cortex
What kind of T cells are found in the medulla?
Non-dividing weaker T cells, hence why it is lighter staining
What is the name of the corpuscles found in the thymus?
Hassals corpuscles
concentric whirls of acidophillic cells
What does the bursa of fabricius look like?
Thick mucousal folds, contains a capillary layer between the medulla and cortex
What does the apex of the bursa of fabricius contain?
Lytic enzymes
in a tuft of epithelial columnar cells
In what organ does peyers patches have an additional function as a primary lymphoid organ
What are micro folds specialised for and what lymphoid tissue are they found in?
They are specialised for antigen uptake and they are found in peyers patches
What is found in the paracortex of the ymph node?
T cells and high endothelial venules
What does white pulp tissue include?
Lymphoid tissue that surrounds arterioles
What does red pulp tissue include?
loose vascular framework
What do birds have instead of platelets?
nucleated thrombocytes
these are unable to form plugs to block damaged arteries
