week 1 Flashcards
how many liters of blood does a human have?
4-6 litres
3 group of cells . found in blood
Erythrocytes, Leucocytes, & Thrombocytes
Name the 5 WBC’s present in blood
Monocytes, basophils, eosinophils, neutrophils, lymphocytes
State the main function for neutrophils (2)
Multilobed nucleus with fine granules
act as phagocytes at active sites if infection
State the main function for Eosinophils
large brick-reed cytoplasmic granules
found in response to allergies and parasitic worms
State the main function for Basophils
Have histamine containing granules
intiate inflammation
The sequence of events that prevents the loss of blood from blood vessels is called
Haemostasis
The presence of inherited antigens on the surfaces of erythrocytes determines the _______ of the person
Blood Group
The most abundant plasma protein is
Albumin
A student has a hemoglobin measurement of 16 g/100 ml blood. Is this normal?
YES
Thrombocytes commonly known as
Platelets
Platelets are
fragments of cells found in blood; they help stop bleeding by forming plugs and releasing chemicals that make blood clot
State the 3 phases of hemostasis?
vascular spasm
platelet plug formation
coagulation
The fluid portion of blood is called
Plasma
The red pigment present in RBCs is called
Haemoglobin
Haemoglobin function is to
bind to oxygen and carbon dioxide in blood
Erythrocytes do not have nuclei and thus have a fixed lifespan of
120 Days
The intrinsic conduction system consists of
autorhythmic cells
autorhythmic cells
initiate and distribute a wave of action potentials/contractions/depolarisations throughout the heart
When can erythroblastosis fetalis not ever happen in the child of an Rh negative mother?
if the father is Rh-
Where and how is iron stored in the body?
Iron is mostly stored in hemoglobin of RBCs.
Additional free ions are bound to protein-iron molecules like ferritin, hemosiderin, and transferrin. Ferritin and hemosiderin molecules are stored in the liver, spleen, and bone marrow. Transferrin transports iron in the blood.
characteristics of pernicious anemia
A lack of intrinsic factor, leading to a deficiency of vitamin B12 and large pale cells called macrocytes,
Intravascular clotting disorders include
thromboemboli formation
thromboemboli formation
a clot moving within the circulatory system.
