Topic 5 - BLOOD VESSELS & BLOOD Flashcards
Blood and lymphatic vessels have three layers consisting of
tunics
tunica intima
the innermost layer
tunica intima consists of
endothelium
tunica media
the middle layer
tunica media consists of
smooth muscle
tunica adventitia
outermost layer
capillary
microscopic blood vessel
precapillary sphincter
a band of smooth muscle
sphincter
surrounds orifice
carry blood away from the heart
arteries
veins
carry blood toward the heart
whole blood contains two main components
plasma and formed elements
red blood cells aka
erythrocytes
red blood cells contain
hemoglobin
white blood cells aka
leukocytes
cell fragments involved in blood clotting
platelets
the process of stoppage of bleeding from a blood vessel
Hemostasis
heme
blood
When a blood vessel is damaged smooth muscle in the middle layer of a blood vessel contracts immediately called
vascular spasm
Platelets stick to the damaged blood vessel walls and form a mass called a
platelet plug
Formation of insoluble fibrin
clot formation
Coagulation aka
clotting
component that contains neither blood cells nor clotting factors
Serum
disorder of blood coagulation characterized by a permanent tendency to
hemorrhage
hemophilia
hemorrhage
bleed
condition that occurs when a blood clot forms in a vein located deep inside your body
deep vein thrombosis
a blood clot that forms in a vessel and remains there
thrombus
a sac-like enlargement of a blood vessel
aneurysm
any condition in which the number of red blood cells or the amount of hemoglobin in the blood is reduced
anemia
is a bluish hue to the skin, gums, fingernails, or mucous membranes caused by a lack of oxygen in the blood
cyanosis
vessels and various organs that are associated with the immune system
lymphatic system
accumulation of an excessive amount of fluid
edema
