### substance | blood:

Blood type
* All blood types exist in almost all races.
* Some blood types are common, some rare, and others very rare
  - more rare than others
  - have peanuts
  - play important roles
* are as fundamental as creation itself
  - inherited and represent contributions from both parents
* is an easily accessible factor in patients' genetic makeup
  - example of codominance
  - determined by inherited antigens and antibodies
  - inherited, just like eye color
+ Blood transfusion, Problems
  * Not all people are able to donate blood to all other people. Blood types prevent that.

Blood typing
* are diagnosises.
* can give indications to food compatibility and related health issues.
* is especially important during pregnancy.
* very poor method to resolve important questions about paternity.

Bloodstream
* Most bloodstreams affect livers
  - are part of bodies
* Most bloodstreams carry carbon dioxide
  - trigger immune responses
* Some bloodstreams enter lungs.
* Some bloodstreams lead to diseases
  - liver diseases
* Some bloodstreams lead to threaten diseases
  - result in infection
* includes blood cells
  - cell membranes
  - cytoplasm
  - nuclei
  - plasma membranes
  - sections
  - vacuoles

Clean blood
* goes out of the kidney and back into the bloodstream through the vein.
* means a disease-free body.

Clotted blood
* has a particulate, hypoechoic appearance.
* takes up space in a closed system, increasing pressure on the brain.

Cold blood
* returns from feet.
* returns to hearts
  - mammalian hearts

### substance | blood:

Deoxygenated blood
* coming from the body enters the right atrium and passes to the right ventricle.
* enters the first chamber of the heart from the body.
  - via the vena cava and is pumped into the right ventricle
* flows from the body into the right atrium
  - to the lungs and oxygenated blood flows to the rest of the body
* is blood
  - heavy with carbon dioxide
* means that the blood has very little oxygen.
* returns via veins to the venae cavae, re-entering the heart's right atrium.
* travels to the s-shaped heart, which comprises two chambers.

Fetal blood
* is in direct contact with the mother' s blood via the placenta.
* leaves the placenta through veins leading back to the fetus.

Healthy blood
* carries lots of oxygen.
* flowing in helps proper digestion.
* is essential for life
  - needed to carry oxygen

### substance | blood:

Human blood
* All human blood runs red.
* Some human blood causes diseases.
* contains a red pigment called hemoglobin, which carries oxygen to the cells.
* is essential to the body's immune system
  - full of hormones
  - highly infectious
  - made of a fluid called plasma that carries red and white blood cells and platelets
  - preferred over other animals with ankles as a favorite bite area
  - red because it has a red pigment called hemoglobin which contains iron
  - the best available therapy for correcting the oxygern-carrying defect in anemia
  - their only source of nourishment
* very sacred thing.

Insect blood
* is greenish, yellowish, or colorless
  - normally green, although it can vary in different species
* is usually colorless or a watery green
  - greenish in color

### substance | blood:

Less blood
* can flow to the genitals.
* flows to the gastrointestinal tract, and digestion virtually stops.
* goes to the lungs , so the blood gets less oxygen.
* is needed to supply the organ with oxygen.
* leaves the heart, and the blood returning to the heart backs up.
+ Pulmonary hypertension, What goes wrong with the body: Cardiology :: Pulmonology :: Diseases
  * The heart can work so hard that it becomes sick. This is called heart failure. The sick heart cannot pump blood well. Less blood goes to the lungs, so the blood gets less oxygen. This makes it hard to breathe. This gets worse when exercising or working hard.