FINAL!!!DMS 121 Flashcards
Planes divide the body into Inferior and superior
TRANSVERSE
What divides the body into Right and Left
LOGITUDINAL
What divides the body into Anterior and Posterior
SAGGITAL OR CORONA
What else can be used to described Superior
Cranial or Cephalic
What else can be used to described Inferior
Caudal
What else can be used to described Anterior
Ventral
What else can be used to described Posteior
Dorsal
What divides into two layers in the peritoneum
Visceral (covers the organ) and Parieta (lines the wall)
What is a 2 layered or double layered fold of peritoneum
MESENTERY
Whatr extensive peritoneal pouch is posterior to stomach
Lesser omentum/ Lesser Sac
What specific thing can occur in the peritoneum with phatalogy?
Aascites, fluid, infectious, accumulation, pus, blood, bile etc
What organs are in the peritoneal name 10
- Kidneys
- Ureters
- Adrenal
- Pancreas
- Great Vessels
- Bladder
- Uterus
- Duodenum
- Prostate
- Colon
What makes up the portal triad?
Portal Vein
Hepatic artery
Common Bile Duct
from the portal triad which one is more lateral
Lateral-CBD
Medial- Hepatic artery
Described the way the Portal Vein is entering?
Is the blood Deoxygenated or Oxygenated
How much?
Horizontally or oblique
Oxygenated
70 or 80%
How many liver lobes
Name them
4 Right lobe Left lobe Caudate lobe Quadrate Lobe
Which lobe in the liver is the smallets?
Quadrate
What ligament separates the right and left lobe and caudate lobe
Ligamentum Venosum
Hepatic Vein dumps into which vessel
IVC
What does the falciform ligament connects to
The anterior abdominal wall
What part is most medial? to the kidney which pole
The upper pole
Whats the relationship from the kidney to the psoas muscles
inferiorly and medial
What pouch relates to kidney and liver?
Marrisons
Whats the functional unit of the Kindey
Nephron
Where does the tail relate to
Hilum of the spleen
What are the portions of the pancreas
Head, neck, body and tail
What vessels does the pancreas has
GDA
CBD
Splenic Vein
What connects the GB to Portal Vein in imaging
MIF Main lobar fissure
3 Parts of GB
Which one is most anterior
neck, body and fundus
The Fundus
Study the flow of the GB ducts
study
What makes up the pelvic diaphrgrahm
Levantor Ani and Cocyggeous
Cordlike thickening in broad ligament that connects the ovary to the lateral wall of the uterus
Ovarian ligament
Extension of broad ligament that carries ovarian vessels and attaches ovary
Suspensory ligament
Extends laterally from the body of uterus to lateral walls of pelvis
Round ligament
Peritoneal fold that extends from the sides of the uterine wall to the pelvic floor
Broad ligament
Liver Location
The liver occupies most of the Rt. Hypochondrium,
the epigastrium, and extends into the left
hypogastrium. May extend to the Left Mamillary
line.
The Liver is an Intraperitoneal Organ
Intraperitoneal Organ: Liver
The surface of the liver in enclosed by peritoneum
except the “Bare Area”, which is the posterior surface
that comes in contact with the Diaphragm.
Bare area is bordered by Coronary Ligaments
(peritoneal reflections)
Surrounding Organs: Liver
Rt. Kidney lies inferior and posterior Great vessels lie Posteriorly Portal Triad enters medially
Surrounding Organs Liver
Pancreas lies inferior and posterior
Left lobe of liver can serve as a window to image the
pancreas
Liver Size, Shape and Location
Right lobes exceeds the left by a 6:1 ratio
Weight: 1400 to 1600g
Length: us. 15-17 cm
Lower border at costal cartilage of 8-9 rib
Each Lobule is 1 X 2 mm
Vascular Anatomy
Receives nutrients from HA and PV
PV is 80% saturated and supplies 50-60% of oxygen
requirements for hepatocytes
PV and HA both have echodense walls
Collegen connective sheaths cause reflections.
HV walls less echodense
PV runs in horizontal plane (oblique) intralobar path
HV vary in calliper with location and breathing
HV run more longitudinally between segments
The hepatic veins
The hepatic veins are divided into three components:
right, middle, and left. They all drain into the inferior
vena cava at the level of the diaphragm.
Function of the Liver
Simplified
Formation of Bile 2. Activity of Reticulo-Endothelial Tissues 3. Metabolism of Carbs, Lipids, Proteins for preparation and excretion. 4. Storage Depot Blood Reservoir 6. Heat Production 7. Detoxification 8. Lymph Production
Four Fossa in Liver
IVC FOSSA (Right Sagittal)
Portal Fossa
Left Sagittal Fossa
Gallbladder Fossa
IVC Fossa
Short linear depression
located on posterior surface between caudate lobe
and bare area of liver
Separates Quadrate lobe in front from caudate lobe
behind
Separated from portal
by caudate
Left Sagittal Fossa
Separates right /left Porta joins at rt angle and divides in 2 parts Falciform liagment telescopes into ligament of terres inferiorly
Portal Fossa
Short deep fissure Extends transversely across under surface of left lobe Separates quadrate lobe in front from caudate behind Transmits PV, HA, BD, nerves, Lymphatic
GB FOSSA
Separates Rt/ Left Shallow and oblong Located on undersurface of right lobe of the liver Extends from anterior free margin of liver to right extremity of Porta fossa
Left Lobe
Contains medial and lateral segments
• Medial segment often referred to as the quadrate
lobe
• Smaller and flatter than right
• situated in epigastrium and Lt Hypochondria
• Upper surface convex and molded onto diaphragm
• Under surface presents the gastric impression and
omental tuberosity
CAUDATE LOBE OF LIVER
Situated upon the posterior surface of right • lies opposite T11-12 • Bounded anteriorly and caudad by the porta • bounded posterior by IVC • Bounded on left by Lt Sagittal Fossa
Quadrate lobe
Obsolete term for medial aspect of left
lobe
• situated on the under surface of left lobe
• Boudned anteriorly by the anterior margin
of liver/ posteriorly by ports; right by GB
fosse, and on left by Lt sagittal fossa
• Oblong in shape
Left Sagittal Fossa
Holds the falciform ligament
• Separates right and left lobes
• Porta joins it at a right angle and divdes
into two parts
• Recanilization of Umb vein would occur in
this fossa
Gallbladder Fossa
Shallow and oblong fossa • Located on undersurface of rt. lobe • Extends from anterior free margin of liver to right extremity of porta • Can be used to Seperate lt/rt lobe
Inferior Vena Cava Fossa
Short depression of posterior surface between caudate lobe and bare area of the liver • Separated from the porta by the caudate lobe • Holds the IVC
Porta Fossa
Short deep fissure extending transversely
across under surface of left lobe
• Separates quadrate lobe anteriorly from
caudate lobe behind
• Transverse portal vein, Hepatic artery,
nerves lymphatics and Bile ducts
pre vertebral Vessels
Arteries arising from aorta • Veins draining into IVC • Portal Venous System Combo Bring blood to Liver
Posterior View of Liver
Posterior view of the diaphragmatic surface of the liver. The caudate lobe is located on the posterosuperior surface of the right lobe, opposite the tenth and eleventh thoracic vertebrae
Main Lobar Fissure
Main lobar fissure (MLF) extends between the long axis neck of the gallbladder (GB) and the main portal vein (PV) on the longitudinal image. B, Falciform ligament extends from the umbilicus to the diaphragm in a longitudinal plane
Main Lobar Fissure
Main lobar fissure (MLF) extends between the long axis neck of the gallbladder (GB) and the main portal vein (PV) on the longitudinal image. B, Falciform ligament extends from the umbilicus to the diaphragm in a longitudinal plane.
Ligamentum teres
(LT, arrows) appears as a bright echogenic focus in the left lobe of the liver on a transverse image.
Whats the verticle line that extends from the Xiphoid to the Symphysis pubis
Linea alba
ABDOMINAL CAVITIES
Cavities in the Human body contain internal organs (viscera) . –Body divided into two portions: Dorsal and Ventral Cranial Thoracic Vertebral Abdominal Spinal Canal
Abdominal Cavity
Upper portion of the abdominopelvic
cavity
Excludes the retroperitoneum
Excludes the pelvis
Boundaries
Separates cavities or viscera
parts
Usually anatomical structure
or plane
Abdominal Cavity
Bounded superiorly by Diaphragm Anteriorly by abdominal wall Posteriorly by spine, ribs and iliac fossa Inferiorly by pelvic cavity
Other Abdominal Structures
Diaphragm Some shaped muscle separates the thorax from abd. Muscular component rises from margins of thoracic outlet Rt. crus of it arises from sides of bodies of L1-3 Lt. crus of it arises from lateral bodies of L1-2
Peritoneum
Serous membrane Lines the abd covity Covers the peritoneal organs Formed by a single layer of cells MESOTHELIUM
Mesothelium
Single layer of cells Rests on thin layer of connective tissue If damaged or removed peritoneal two layers may adhere This may form adhesions (Scarring
Peritoneum
Divided into two layers
Parietal
Visceral
Parietal and Visceral Layer
Parietal Portion that lines the abdominal wall Does not cover the organs Visceral Covers organs
Peritoneal Caity
Potential space between the parietal and visceral layers.. Cavity that contains small amount of lubrication Serous fluid lubricates with serous fluid and helps organs move on one another without friction What happens with pa
What happens with pathology
This space may become distended with fluid May actually contain several liters Interstitial fluid referred to as ASCITES Can be benign (simple) or Malignant
Mesentary
Two layered fold of peritoneum Attaches part of intestines to posterior abd wall and includes mesentery of small intesine, transvers mesocolon and sigmoid mesocolon
Other fluids found here
Blood, pus, bile, fecal material or ruptured intestine. These may accumulate in this cavity. Fecal material would lead to peritonitis , shock and possibly death