exam 1 Flashcards
plasma membrane make up
lipid bilayer
hydrophobic ends oriented inward
hydrophilic ends oriented outward
constituents of plasma membrane
phospholipids
glycolipids
cholesterol
what will freely pass through cell membrane
hydrophobic (lipophilic)
secondary transport: symport
when the second substance being moved goes in the same direction
secondary transport: antiport
when the second substance being moved goes in the opposite direction
G protein coupled receptors
interact with other membrane bound proteins that activate second messenger systems. Initiate transduction pathways
protein kinase
enzyme catalyzing the transfer of phosphate to from ATP to a protein substrate.
uncontrolled entry of calcium into cytosol
destructive agent
activates enzymes
important final pathway in many causes of cell death.
increased capillary hydrostatic pressure
venous obstruction
Na and water retention
heart failure
- fluids move into tissue
decreased capillary oncotic pressure
decrease production of plasma proteins
- cirrhosis
- malnutrition
Increased tissue oncotic pressure
related to increased capillary permeability
- proteins move into tissues
burns
allergic inflammation reactions
lymph obstruction
unable to move proteins out of interstitial fluid
- tumor
- parasites
- removal of lymph nodes
pernicious anemia s/s
cognitive dysfunction
paresthesias of feet and hands
wt loss
nerve degeneration
iron deficiency anemia s/s
pallor weakness/fatigue palpitations irritability headaches pica spoon-shaped nails blue sclerae
thalassemia major
bone deformities bowing of long bones icterus hepatomegaly spleenomegaly cardiac failure
Thalessema intermeda
deforming b one and joint disease
chronic leg ulcerations
acute blood loss anemia s/s
tachycardia with exercise
postural drop in BP
cold clammy skin
HIT
heparin induced thromobcytopenia
ITP
immune/idiopathic thrombocytopenia
increased platelet destruction (autoimmune)
can be seen after an illness
transfusion and platelets
platelets degrade in stored blood after 24 hours so when transfused there is no platelets; dilution
endothelial cells and platelets
endothelial cells prevent adhesion by releasing nitric oxide and prostaglandin I2 which increases platelet cGMP and cAMP -> decrease in activation of platelets.
antibodies at birth
maternal IgG: will be gone around 10 months
small amounts of fetal IgA and IgM
antibodies at 6 months of age
fetal IgG, IgA, IgM
declining maternal IgG