lab 4 blood Flashcards
True capillaries are only large enough to permit the passage of ___ at a time and sometimes the ___ can be seen in the capillaries lined up in single file.
one erythrocyte
erythrocyte
small arteries can be defined as having up to ____ layers of ___ muscle in the wall
8
smooth
Arterioles, the ___of the small arteries, have about ___ layers of smooth muscle cells in their wall.
smallest
1-2
The vein will have a few ____supporting its wall, whereas the artery will have a few ____ around it.
collagenous fibers
smooth muscle cells
Three layers of a medium sized artery or vein
tunica intima tunica media tunica adventitia (externa)
an endothelial lining is what layer of an artery
tunica intima
The ___ of an artery tends to be the thickest and most well-defined layer.
tunica media
In a vein the ___ tends to be the widest.
tunica externa (adventitia)
Medium arteries tend to have an internal ___.
elastic membranes
to see elastic tissue, ___ is used
stained by the Weigert’s elastic tissue method and counterstained with hematoxylin
in the large artery: the tunica ___ is well developed and possesses numerous concentrically arranged elastic fibers in the aorta.
media
The tunica ____, however, is relatively undeveloped and non-muscular in the aorta.
externa, adventitia
a nerve is
a bundle of axons in the peripheral nervous system.
Masson’s trichrome stain is used to stain
myelinated nerves
Masson’s trichrome stain was used to prepare this slide. Accordingly, collagenous fibers will appear ____ and smooth muscle will be ___
blue-green
red
fascicles is ___
a bundle of myelinated axons.
the dense connective tissue that wraps a fascicle of nerves is ___
perineurium
the connective tissue that extend inward from the perineurium to surround individual myelinated axons is ___
endoneurium
the outermost wrapping of a nerve___
and is what tissue type ___
epineurium
dense connective tissue
the epineurium extends into the interior of the nerve as a fibrous network, the ____, surrounding the fascicles.
interfascicular connective tissue,
Myelinated axons are ___ in H&E preparations.
blue
how do unmyelinated nerves differ from myelinated fibers?
not surrounded by myelin??
neurovascular bundle
consists of the binding of blood vessels and nerves with connective tissue
This structural conformation favors their migration in tandem throughout the body.
aorta
inferior vena cava
make up of nerve
Cat tongue
- Capillary in cross-section
- Capillary in longitudinal section
- Skeletal muscle (note nuclei at periphery of cell)
Cat tongue
- Capillary in cross-section
- Skeletal muscle (note nuclei at periphery of cell)
- Endothelial cell nuclei
tonsil
- Small artery (note red blood cells in lumen)
- Small vein
- Smooth muscle cell nucleus
plylorus/duodenum
- Small artery
- Small vein (note red blood cells in lumen)
- Pyloric gland
- Dense irregular connective tissue
Epididymis
- Small artery
1a. Tunica intima
1b. Tunica media
1c. Tunica adventitia - Small vein
- Medium artery
2. Medium vein
medium artery
- Arterial wall
- Tunica intima with internal elastic membrane
- Tunica media
- Tunica adventitia
medium vein
- Venous wall
- Tunica intima
- Tunica media
- Tunica adventitia
- Aorta
2. Vena cava
Vena Cava
- Tunica intima
- Tunica media
- Tunica adventitia
Aorta
- Tunica intima
- Tunica media
- Tunica adventitia
Myelinated Nerve
- Epineurium
- Perineurium
- Adipose tissue
- Fascicles of myelinated axons
Myelinated Nerve
- Epineurium
- Perineurium
- Fascicles of myelinated axons
Myelinated Nerve
- Perineurium
- Axons
- Endoneurium (blue-green)
- Myelin sheath
- Space artifact
- Myelinated nerve
- Spinal cord white matter
- Spinal cord grey matter
Spinal Cord Myelinated Axon
- Axon
- Endoneurium
- Space artifact caused by the myelin sheath
- Schwann cell nucleus
- Nerve Cell Body of Multipolar neuron
- Projection
- Central spinal canal
Spinal Cord, Multipolar Neurons in Grey Matter
- Nerve Cell Body of Multipolar neuron
- Projection
- Nucleus
- Nucleolus
- Unmyelinated nerves
- Small arteries
- Small vein
- Ductus deferens
- Unmyelinated nerves
- Small arteries
- Vein
capillaries in skeletal muscle
small vein
small artery
artery
vein
comb of bird -nucleated RBC
aorta
- tunica intima big and elastic
- tunica media big and elastic
- tunica externa little
vena cava
- Tunica media -small
- tunica externa big
yellow is ___
orange is ___
can’t see ___
epineurium
perineurium
endoneurium
neurovascular bundle
nerve, vein and artery
unmyelinated nerve
there is no space- the space is an artifact from where myelin is no more, therefore no space in unmyelinated
