Climate change and occupational safety and health.
היסטולוגיה!.ppt
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16. hepatic vein system
portal vein system
branch of the hepatic artery
branch of the portal vein
Connection of the portal and
the hepatic vein system
sinusoid
(collecting vein)
17. Portion of a hepatic lobule
(schematic drawing)
portal triad
18. „Alternative” units
Portal lobule:
Supplied by one portal triad
in the center
Triangular, with central
veins at the angels
Acinus:
Supplied by perilobular
branches
Rhomboid
Oxygen content of the
blood decreases from the
periphery to the central
vein: central region is more
suspect of ischemic injury
(centrolobular necrosis)
19. The portal canal
consists of
• branches of the portal vein
• branches of the hepatic artery
• bile ducts
• lymph vessels
• small nerves
• loose connective tissue (in
which the above structures are
embedded)
portal vein bile duct hepatic
artery
connective tissue
80. Alcian blue- H - picrosiriusred
Duodenum:
• Goblet cells- blue
• Brunner glands- pink
81. Large intestine
• No plicae folds!
• No Villi!
• No paneth cells
• Many goblet cells
• Solitary lymphoid follicles
• Crypts are deeper, more
numerous & closely packed
86. Epithelium: simple cuboidal (with Clara cells - surfactant)
wall is studded with a few alveoli
Respiratory bronchiole
Alveolar duct and its endpieces the alveolar sacs : most peripheral
respiratory passages, the wall consists of alveoli only
(4-5 sacs open into one duct)
87. Type I. pneumocyte – gas exchange
-(95% of the surface is covered by these
cells)
-develops from type II. pneumocyte
Type II. pneumocyte – secretion of surfactant
Alveolus epithel
116. Transverse section through the embryo cranial to the
septum transversum
arrow in the pericardio-
peritoneal canal
Illustration was prepared by Katalin Fink and Ágnes Nemeskéri
117. -pleuropericardial canal
narrows –
obliterates
Transverse section through the embryo cranial to
the septum transversum
pleuropericardial septum common cardinal vein
phrenic nerve
lung
primary pleural cavity
Illustration was prepared by Katalin Fink and Ágnes Nemeskéri
118. 4th week
Nasal placod
(Pax-6)
-processus maxillaris
two maxillary
prominences
-processus mandibularis
(two mandibular prominence)
-stomodeum
(primitive oral
cavity)
-processus frontalis (frontonasal prominence)
Face
The basic morphology of the face is
established between the 4th and 10th
weeks by the development and fusion of
five prominences (processes)
119. 5-6th week
Nasal pit
Nasal or olfactory placodes invaginates to
form the nasal pit, dividing the frontonasal
prominence into the lateral and medial
nasal process. (Nasal placodes give rise to the
olfactoty epithelium)
maxillary prominences
-proliferate and move toward the midline
