Histology of Internal Tissues
liver histology- made up of a lot of cylinders
called “hepatic lobules” called hepatocytes.
A central vein passes through the middle of these
will drain the blood from hepatocytes and
eventually drain the blood from the liver itself.
Book metaphor:
Interior of liver under the microscope, opening a
book cover to cover so in between the covers, you
can see the hole and that would represent the
central vein.
Each page of the book is going to represent a
sheet of hepatocytes.
Sinusoids- in between the hepatocytes the sheets
of cells have channels; blood channels that will
lead away from the central vein in the hepatic
lobules.
Sinusoids- contain some phagocytic cells called
Kupffer Cells.
Kupffer Cells- work to clean the blood and
remove any kind of debris from the blood in the
liver
Hepatic Lobule under the microscope on lowest
power:
,Boundaries of lobule- outline of white around the
hepatic lobule
Central vein- large white dot in the center of
lobule; drains the blood from the lobby walls. Each
of the central veins in the liver will eventually
drain into something called the hepatic vein,
which will drain blood from the liver back to
inferior vena cava.
Increased magnification of Central vein
, Redish cells around central vein- Hepatocytes-
the liver cells that make up the interior of the liver
Sinusoids- white lines between hepatocytes that
will carry the blood to that central vein.
Pancreas- gland in the digestive system is
considered endocrine & exocrine gland
Endocrine portion- secretes hormones like
insulin and glucagon that help keep the blood
sugar levels in our body under control
Exocrine portion- secretes digestive enzymes
help to complete the process of digestion.
Pancreas under lowest power microscope:
liver histology- made up of a lot of cylinders
called “hepatic lobules” called hepatocytes.
A central vein passes through the middle of these
will drain the blood from hepatocytes and
eventually drain the blood from the liver itself.
Book metaphor:
Interior of liver under the microscope, opening a
book cover to cover so in between the covers, you
can see the hole and that would represent the
central vein.
Each page of the book is going to represent a
sheet of hepatocytes.
Sinusoids- in between the hepatocytes the sheets
of cells have channels; blood channels that will
lead away from the central vein in the hepatic
lobules.
Sinusoids- contain some phagocytic cells called
Kupffer Cells.
Kupffer Cells- work to clean the blood and
remove any kind of debris from the blood in the
liver
Hepatic Lobule under the microscope on lowest
power:
,Boundaries of lobule- outline of white around the
hepatic lobule
Central vein- large white dot in the center of
lobule; drains the blood from the lobby walls. Each
of the central veins in the liver will eventually
drain into something called the hepatic vein,
which will drain blood from the liver back to
inferior vena cava.
Increased magnification of Central vein
, Redish cells around central vein- Hepatocytes-
the liver cells that make up the interior of the liver
Sinusoids- white lines between hepatocytes that
will carry the blood to that central vein.
Pancreas- gland in the digestive system is
considered endocrine & exocrine gland
Endocrine portion- secretes hormones like
insulin and glucagon that help keep the blood
sugar levels in our body under control
Exocrine portion- secretes digestive enzymes
help to complete the process of digestion.
Pancreas under lowest power microscope:
