The negative pressure allows the lungs to It is conducted through blood vessels
passively fill with air as they relax. (arteries and veins).
The left and right lungs are slightly It is made up of red blood cells, white
different in size and shape due to the heart blood cells, platelets, and liquid plasma.
pointing to the left side of the body.
The left lung is therefore slightly smaller Blood types of parents and their children
than the right lung and is made up of 2 Parents’ Blood Types Possible Children
lobes while the right lung has 3 lobes. A&A A, O
The interior of the lungs is made up of A&B A, B, AB, O
spongy tissues containing many capillaries A & AB A, B, AB
A&O A, O
and around 30 million tiny sacs known as B&B B, O
alveoli. B & AB A, B, AB
The alveoli are cup-shaped structures B&O B, O
found at the end of the terminal AB &AB A, B, AB
AB & O A, B
bronchioles and surrounded by
O&O O
capillaries.
CIRCULATORY SYSTEM or Cardio- Red Blood Cells (RBCs) or Erythrocytes
vascular System
These are used to carry oxygen to all parts
It is a network of organs and vessels that is of the body and to bring carbon dioxide to
responsible for the flow of blood, the lungs.
nutrients, hormones, oxygen and other
RBCs have a lifetime of about 120 days.
gases to and from cells.
The haemoglobin in the red blood cell is
It contains the heart, blood and blood the carrier for oxygen and carbon dioxide.
vessels.
One RBC contains about 280 haemoglobin
It includes the pulmonary circulation, a molecule.
"loop" through the lungs where blood is
In the process of being formed they go
oxygenated; and the systemic circulation,
through a unipotent stem cell stage. They
a "loop" through the rest of the body to
have the job alongside the white blood
provide oxygenated blood.
cells of protecting the healthy cells.
The systemic circulation can also be seen
to function in two parts–a White Blood Cells (WBCs) or Leukocytes
macrocirculation and a microcirculation.
An average adult contains five to six These are responsible for fighting
quarts (roughly 4.7 to 5.7 liters) of blood. infection by identifying, engulfing, and
destroying foreign organisms.
Blood They are active in the immune response by
producing antibodies to foreign organisms.
It is a constantly circulating fluid
Granulocytes or neutrophils, eosinophils,
providing the body with nutrition, oxygen,
basophils, monocytes, and lymphocytes
and waste removal.
are the 5 different types of WBCs.
It is mostly liquid, with numerous cells
Neutrophils are the most abundant of all
and proteins suspended in it, making blood
the WBCs.
"thicker" than pure water.
It transports nutrients, proteins needed for
blood clotting, and waste products.
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