a and p lab practical #2
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57 Terms
How do we know a blood sample is type A blood?
if we see clotting/agglutination when adding anti serum a to blood then that would signify it is tyoe a blood
How do we know a blood sample is type B blood?
if we see clotting/agglutination when adding anti serum b to blood then that would signify it is type b blood —— note: this is the same process of Rh
what is agglutination?
clotting of the blood — antibodies and antigens react together
what blood type is this?
type a
what blood type is this?
type b
would this sample be Rh positive or negative?
positive bc of clumping
how do we measure hematocrit?
RBCs divided by total amount multiplied by 100
what is hematocrit? (definition)
RBC’s concentration in blood
what is the normal hematocrit for a male?”
41-50%
what is the normal hematocrit for a women?
36-44%
what is the relationship between hematocrit, hemoglobin, and RBC count?
hematocrit measures RBC volume, so a low hematocrit typically indicates a low RBC count which means a lower hemoglobin level (indication of anemia). This would mean their relationship is directly proportional.
what is the pathway of electrical conduction through the heart?
SA node (pacemaker) — AV node (brief delay) —- bundle of his (branches down interventricular septum) —- purkinje fibers (up the ventricular walls)
what is this?
SA node
what is this?
AV node
what is this?
bundle of his
what is this?
bundle branches
what is this?
purkinje finbers
what are the basic parts of an EKG?
p wave, QRS complex, T wave
what is this?
P wave
what is this?
QRS complex
what is this?
t wave
what happens in the P wave?
atrial depolarization — atria contract
what happens in the QRS complex?
ventricular depolarization — ventricles contract, masking atrial repolarization (this is the relaxation)
what happens in the T wave
ventricle repolarization which is when the ventricles relax
do arteries carry blood to or away from the heart?
away
do veins carry blood to or away from the heart
they return blood back to the heart
do antibodies or antigens determine your blood type?
antigens — present on surface of your RBCs
what is an antibody?
like security guards — they defend against things that dont belong on body
how do we measure hematocrit?
you can use a ruler to divide RBC’s length by the total length (plasma and rbcs) then multiply by 100
lymphatic system function
lymphatic vessels act as a drainage system and collect tissue fluid that leaks out of blood capillaries and return it safely to the bloodstream
PR segment
brief electrical pause button in the heart
what is this
aortic arch
what is this?
brachial artery
cephalic vein
median cubital vein
basilic vein
radial artery
ulnar artery
femoral
inferior vena cava
abdominal aorta
common iliac vein
common iliac artery
femoral artery
popliteal artery
popliteal vein
posterior tibial artery
anterior tibial artery
common carotid artery
subclavian vein
internal jugular vein
brachiocephalic
superior vena cava
palatine tonsil
pharyngeal
tubal tonsil
lingual