the spleen is what type and located where?
Intraperitoneal in the LUQ
What system is the spleen a part of?
composed primarily of?
Reticuloendothelial system
Composed primarily of lymph tissue
the spleen is responsible for…
active in…
Responsible for the phagocytosis of damaged/old cells, foreign material and pathogens
Active in hematopoiesis during the first part of fetal life
spleen plays an important role in…
NOT essential to
- Plays an important role in the body’s defense
against disease - NOT essential to life
specific location of spleen?
posterolateral to the…
posterior to…
Left hypochondrium
Posterolateral to the body and fundus of the stomach and pancreatic tail
- Posterior to the left colic gutter
LK is posteroinferior to what part of the spleen
- LK is posteroinferior to the medial section
The spleen is anterior to…
Diaphragm, left lung, ribs, left pleura
the splenic hilum is medial where…
the only portion that is not…
because of its locations the ribs offer…
- Medial where the vessels enter and exit, the only portion that is not covered by peritoneum
- Because if it’s location the ribs offer much needed protection of the spleen.
spleen is between the left …. and the …
Between the left hemidiaphragm and the
stomach
the spleen is lateral to…
Stomach and lesser sac
LK is _______ to the spleen
LK is inferomedial
size of the spleen?
in its longest dimension should not exceed…
contour…
________ superior surface and _______ inferior surface
In its longest dimension should not exceed
13cm
- Smooth in contour
- Convex superior surface and concave inferior
surface
spleen type (in relation to blood flow)
______ superiorly and ______ inferiorly
covered in _______ with the exception of the…
Highly vascular lymphoid tissue
Ovoid structure, convex superiorly and
concave inferiorly
Covered in peritoneum with the exception of
the hilum
spleen is composed of…
white and red pulp
White pulp
what is it?
consists of?
what surrounds the arteries and are scattered throughout the spleen
- Lymphatic tissue that surrounds and follows the
smaller splenic arteries - Consists of the Malpighian corpuscles
–> Small nodular masses of lymphoid tissue attached to smaller arterial branches - Lymphoid tissue follicles surround arteries and are scattered throughout the spleen
Red pulp
contains a large number of…
fills the remaining space of the _______, surrounds…
consists of …
_____ are permeable, RBCs can enter the…
- More vascular, contain large numbers of RBCs
- Fills the remaining spaces of the lobules, surrounds venous sinuses
- Consists of splenic sinuses and splenic cords
- Capillaries are permeable → RBCs can enter the
venous sinuses
SPL A originates from _______
–> courses…
–> pancreatic branches and gastric branches arise from …
celiac trunk
* Courses laterally towards the spleen
* Pancreatic branches and gastric branches arise
from SPL A
The SPL A at the hilum branches into
These further branch into…
2-4 lobar arteries
lobular arteries then smaller splenic arteries that terminate in capillaries
The capillaries help with the
filtering function of the spleen
The capillaries anastomose with…
Theses _______ converge to form the SPL V
SPL V courses medially to the confluence with
the IMV/SMV to form the __________
tiny venous sinuses that form splenic venules
venules
SPL V courses medially to the confluence with
the IMV/SMV to form the portal vein
Lymph vessels emerge from the _________,
pass through other lymph nodes along the
course of the splenic artery, and drain into the
_________.
Lymph vessels emerge from the splenic hilum,
pass through other lymph nodes along the
course of the splenic artery, and drain into the
celiac nodes.
Nerves to the spleen accompany the _______ and are derived from the _______
Nerves to the spleen accompany the splenic
artery and are derived from the celiac plexus
The spleen helps remove _______, ______, _____ and
_______
Help remove old cells, debris, pathogens and
foreign substances
the spleen produces…
- Lymphocytes, phagocytes, plasma cells and
antibodies - RBCs and WBCs
