Circulatory vs. Respiratory Systems

8/13/2019 Circulatory vs. Respiratory Systems

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Plasma

Plasma is the li9uid part of the blood. 7pproximately half of your blood is made of

plasma. The plasma carries the blood cells and other components throughout the body.

3lasma is made in the liver.

Where are the blood cells made?

The 1ed $lood Cells, hite $lood Cells and 3latelets are made by the bone marrow. $one

marrow is a soft tissue inside of our bones that produces blood cells.

The Blood 'essels

In class we tal+ed about three types of blood (essels:

!. 7rteries

#. Capillaries

%. &eins

)rteries

)rteriesare blood vessels that carry oxygen rich blood 776 from the heart.

1emember, 7 7 7rteries 7way, 7 7 7rteries 7way, 7 7 7rteries 7way.

Ca*illaries

Ca*illariesare tiny blood vessels as thin as or thinner than the hairs on your head.

Capillaries connect arteries to veins. 2ood substances /nutrients0, oxygen and wastes

pass in and out of your blood through the capillary walls.

'ei%s

'ei%scarry blood bac+ toward your heart.

)+),-N$ .)CTS

(ne drop of bloodcontains a half a drop of plasma, +-//-ON1ed $lood Cells, 0"

Thousa%dhite $lood Cells and 1" Thousa%d3latelets.

6ou have thousands of miles of blood vessels in your body. ;$ill )ye the Science -uy;

claims that you could 2ra* your blood (essels arou%d the e3uator TW-CE4

eep your heart healthy...it*s going to have to beat about 5 B-//-ON times duri%6 your

lifetime4

1espiratory System:


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What is the res*iratory system?

6our respiratory systemis made up of the organs in

your body that help you to breathe. 1emember,

that 1espiration < $reathing. The goal of breathing is to

deliver oxygen to the body and to ta+e away carbon

dioxide.

Parts of the res*iratory system

/u%6s

The lungsare the main organs of the respiratory

system. In the lungs oxygen is ta+en into the body and

carbon dioxide is breathed out. The red blood cells are

responsible for pic+ing up the oxygen in the lungs and

carrying the oxygen to all the body cells that need it. The

red blood cells drop off the oxygen to the body cells, then

pic+ up the carbon dioxide which is a waste gas product

produced by our cells. The red blood cells transport the

carbon dioxide bac+ to the lungs and we breathe it out

when we exhale.

Trachea

The trachea/T176=+ee=uh> is sometimes called the windpipe. The trachea filters the air we

breathe and branches into the bronchi.

Bro%chi

The bronchi/$17")=+y0 are two air tubes that branch off of the trachea and carry air directly

into the lungs.

7ia*hra6m

$reathing starts with a dome=shaped muscle at the bottom of the lungs called

the diaphragm/46=uh=fram0. hen you breathe in, the diaphragm contracts. hen it contracts it

flattens out and pulls downward. This movement enlarges the space that the lungs are in. This

larger space pulls air into the lungs. hen you breathe out, the diaphragm expands reducing the

amount of space for the lungs and forcing air out. The diaphragm is the main muscle used in

breathing.


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Why 7o - 8a2%?

hen you are sleepy or drowsy the lungs do not ta+e enough oxygen from the air. This causes

a shortage of oxygen in our bodies. The brain senses this shortage of oxygen and sends a

message that causes you to ta+e a deep long breath===a 67).

Why 7o - S%ee9e?

Sneezing is li+e a cough in the upper breathing passages. It is the body*s way of removing an

irritant from the sensitive mucous membranes of the nose. ?any things can irritate the mucous

membranes. 4ust, pollen, pepper or even a cold blast of air are ust some of the many things that

may cause you to sneeze.

What Causes Hiccu*s?

"iccups are the sudden movements of the diaphragm. It is involuntary === you have no control

over hiccups, as you well +now. There are many causes of hiccups. The diaphragm may get

irritated, you may have eaten to fast, or maybe some substance in the blood could even have

brought on the hiccups.

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Circulatory vs. Respiratory Systems