Download The Circulatory System

The Circulatory System
• https://www.youtube.com/watch?v=AIcAF34
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Function Of Circulatory System
- Heart pumps blood into blood vessels (arteries,
veins, capillaries)
- Blood vessels transport blood throughout body
- Blood carries Oxygen and nutrients to the cells and
wastes away from the cells
_________________ Carries
blood Away from the heart
_________________ Carries
blood To the heart
___________________ 2 of
them; carries blood from
heart to the brain
___________________ 3 of
them; returns blood to the
heart from the neck and face
Heart: has a “septum” that divides it into 2
halves with 2 chambers each.
____________ Upper chambers through which
blood enters the heart
____________ Lower chambers through which
blood leaves the heart
The Right Atrium is larger than the Left Atrium.
Why? Blood comes to the Right Atrium from
EVERYWHERE. It comes to the Left Atrium ONLY
from lungs.
1.
2.
3.
4.
5.
6.
Circulation Of Blood
Blood with CO2 is brought into the Rt Atrium
by the Superior and Inferior Vena Cava
(largest vessels in the body)
To the Rt Ventricle and pumped into the
Pulmonary Artery
Pulmonary Artery takes it to the lungs to
exchange CO2 for O2
Blood with O2 returns to the heart through
Pulmonary Vein
Pulmonary Vein gives blood to Left Atrium
Transferred to Left Ventricle and pumped to
body through Aorta (Aortic Arch=“Big Arch”)
Blood: Delivers hormones, O2, and
nutrients to cells and takes wastes
away; 55% of blood is___________
the fluid portion of blood, or lymph,
in which RBCs, WBCs, and platelets are suspended
(92% water)
_________________ - Carry oxygen in blood
_________________ - Protein rich in iron; binds with
O2 in lungs, releases it to the body tissues; gives
blood red color
_________________- Prevent/fight infection; larger
than RBCs but far fewer in number; during infection
the number increases (RBCs decrease)
_________________ - Smallest type of blood cell;
causes clotting (scabs)
Care/Problems: Most problems of the heart are
under our control (smoking; weight management)
1.________________- pressure on the inner walls
of the arteries; exerted by the blood
2.________________ - high blood pressure;
smoking, obesity, poor diet
3.________________ - anything that occurs at
birth; innate (ex. - congenital heart defect)
4._________________ - low levels of hemoglobin;
cells don’t get enough O2 (Low # of RBCs); pale
skin, weakness, breathlessness
5._________________ - cancer of the bone
marrow; abnormal number of WBCs
6._________________ - genetic disorder, more
common in males, in which the blood does not clot,
lack of platelets