P6 ANATOMY Flashcards
types of lymphoid tissue
1- diffuse
2- dense
Examples of dense lymphoid tissue
thymus
spleen
Lymph nodes
Tonsils
diffuse type is seen in
mucosa of large intestine
Trachea
bronchi
urinary tract
Small lymph nodes found anywhere is known as
MALT
Fluid similar to blood without proteins . RBCs or plasma
Lymph
type of tonsils found in the lateral wall of oropharynx
palatine tonsils
waldeyers ring consists of
- adenoids
-palatine tonsils - lingual
- tubal
location of adenoids
Superiorly in nasopharynx
Location of lingual tonsils
Inferiorly in hypo-pharynx
tonsils that are adjacent to eustachian tube
tubal tonsils
waldeyer’s ring tonsils function
production of immunoglobulins
development of both B & T cell lymphocytes
from what pouch does palatine tonsils develop from
2nd pharyngeal
Remnant of pharyngeal pouch in adults
tonsillar fossa
Anterior fold containing palatoglossus
palatoglossal arch
post. fold , contains palatopharyngeus
palatopharyngeal arch
sinus that contains palatine tonsils
tonsillar sinus
dorsal lingual artery is a branch of
lingual artery
lesser palatine Art. is branch of
Descending palatine
Tonsillar art. branch of
facial art.
Ascending palatine Art.
Facial Art.
Ascending pharyngeal Art. is a branch of
external carotid Art.
venous drainage of palatine tonsils
peri-tonsillar plexus
peri-tonsillar plexus drains into
lingual & pharyngeal veins
both lingual & pharyngeal drain into
internal jugular vein
injury to which nerve causes paralysis of Post. third of the tongue
glossopharyngeal nerve
innervation of palatine tonsils
trigeminal glossopharyngeal
material that
accumulates on the tonsil, white/ creamy in color
Tonsillolith
main substance in Tonsillolith
Calcium
Tonsillolith can cause unpleasant odor which is due to presence of
hydrogen
sulfide and methyl
mercaptan
Epithelium covering palatine tonsils
Stratified squamous non-keratinised
the arrow represents
lymphoid nodules
the arrow represents
tonsillar crypts
location of thymus
anterior and superior
Mediastinum behind sternum
from which pouch does the thymus develop from
endoderm of 3rd pharyngeal
pouch
Microscopy of the thymus , first upper arrow is representing
cortex
Microscopy of the thymus , 2nd middle arrow is representing
medulla
Microscopy of the thymus , 3rd lower arrow is representing
Hassal’s corpuscles
Majority of cells in cortex are
thymocytes
Structure that protects thymocytes from exposure to circulating
antigens.
blood- thymus barrier
Hassall’s
corpuscles are formed from
flattened reticular epithelial cells
from which type of epithelioreticular cells Hassall’s corpuscles are derived from
type 6 / VI
which interleukins are produced by Hassall’s corpuscles
IL-4
IL-7
blood supply to thymus
Inferior thyroid
internal thoracic
part of thymus with no blood - thymus-barrier
medulla
A represents which group of LNs
neck group of lymph nodes
B represents which group of LNs
axial group
C represents which group of LNs
Inguinal
Representing what type of lymphoid nodules
Primary
Representing what type of lymphoid nodules
2ndry
Characteristics of 2ndry lymphoid nodules is the presence of
Germinal center
B lymphocytes proliferate &
differentiate in
germinal center
T Lymphocytes are present in what part of the lymph node
paracortex
Identify the structure pointed by the arrow
peyer’s patches
both legs , left upper quadrant of the body is drained by which lymphatic duct
thoracic duct
thoracic duct drains into
left subclavian & left internal jugular vein
( left brachiocephalic )
right upper quadrant pf the body drained by which lymphatic duct
right lymphatic duct
right lymphatic duct drains into
right subclavian vein &right jugular vein.
( right brachiocephalic)
