In both the pulmonary and systemic circuits, arteries carry blood away from the___________ and veins bring it toward the heart.
heart
100
Leukocytes are __________ blood cells that help fight disease.
white
100
________ factor is another antigen found on the surface of red blood cells.
Rh
100
Any of the ABO blood types can be positive or negative for the Rh _________.
factor
100
Outside the capillary, cells are at __________.
rest
200
Blood is considered a _______ connective tissue that functions to distribute substances critical to life to cells throughout the body
fluid
200
The remaining 45% consists of _______ blood cells called erythryocytes
red
200
There are ________ ABO blood types.
four
200
Individuals with Rh positive blood have that _______, those with Rh negative blood do not.
antigen
200
Capillaries deliver oxygen and _________ close enough to individual cells for the diffusion process to work.
nutrients
300
If you take a unit of blood and spin it in a centrifuge, it will separate into its basic ______________.
components
300
Platelets are cell fragments that circulate in the blood and promote ___________.
clotting
Double jeopardy. Double the points.
300
It's critical that the blood to be transfused be matched to the ____________ blood type.
recipient's
300
Each blood cell is estimated to hold about ____ hemoglobin molecules and each hemoglobin can bind up to four oxygen molecules.
280
300
Oxygen's partial pressure there (outside the capillary) is about 40 ________of mercury, only slightly lower than it is inside the capillary.
millimeters
400
At the top is a fluid called ___________that represents about 55% of our total blood volume.
plasma
400
A mature red blood cell is a package of oxygen carrying ____________ molecules and respiratory proteins.
hemoglobin
400
Blood ___________ are often needed to treat patients whose red blood cells or volume of blood have dropped too low.
transfusions
400
If the blood to be transfused isn't matched to an individual's Rh factor and ABO blood types, ____________ can bind to and destroy the transfused red blood cells creating a potentially life-threatening situation.
antibodies
400
____________ is the term used to describe hemoglin's ability to bind oxygen.
Affinity
500
Next, is a thin whitish layer called the _____________.
buffy coat
500
When the wall of a blood vessel is injured, __________ adhere to exposed collagen fibers.
platelets
500
Plasma, the liquid portion of blood, transports blood cells, __________ and enzymes to sites where they are needed.
proteins
500
Red blood cells are packed with hemoglobin, an _______ containing protein molecules that transport oxygen.
iron
Double jeopardy. Double the points.
500
Once one molecule of oxygen is ________ it's easier to for hemoglobin to bind others.