histology of blood vessels and blood film Flashcards
what do venules join to form
post capillary venule
tunica intima
single layer of squamous epithelial cells
tunica media
predominately of smooth muscle
thickness varies
tunica aventitia
supporting connective tissue
what is the intima and media seperated by
internal elastic membrane
what is the media and aventitia seperared by
external elastic membrane
are elastic fibres stained comonly
no
elastic fibres assoc
to provide elastic recoil such as in aorta where smooth muscle is replaced by sheets of elasric fibres
vasa vasorum
own blood supply in large arteries as only inner part can obtain nutrients from lumen
do arterioles have a lot of smooth muscle
NO onylone or two layers
meta arterioel
Smooth muscle are replace by dis-continuous non-contractile cells called pericytes
where are capillaries absent
Epithelial cells resting on basement membrane
Epidermis of skin, hair and nails
Cornea of the eye
Hyaline cartilage
continous capillary site
muscle nerve lung skin
fenestrated
haev small pores
gut mucosa
endocrine glands
kidney
disconintous or sinusoidal
large gaps ]liver
spleen
bonemarrow
seperation of bloo
red cells densest at bototm
white cells next
pplasma on top
what do RBCs lack
nucleus and organelles
haemoolysis
bursting of rbcs
multi lobes nucelus
neutrophils
what do neutrophils circulate in
an inactive site
bilobed nuceleus
eosinophils
eosinophil role
inducing and maintaining inflammation, particularly in allergic reactions and asthma. They are also important in fighting parasitic infection.
what do the granule sof basophils contain
histamine
heparin
kidney bean shaped
monocytes
do platelets have a nucleus
no
what else can monocytes bcecome
dendritic cells
