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chapter 10
circulatory and respiratory
21
Science
7th Grade
04/30/2008

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Term

what is the function of the cardiovascular system?

Definition

to move nutrients and oxygen to the cells

to remove waste products

Term
What are the parts of the circulatory system?
Definition
heart, blood, blood vessels
Term
Types of circulation and functions
Definition

Coronary-blood flow to and through the heart

Pulmonary-blood flow to the lungs

Systemic-blood flow to the rest of the body

Term
what kind of circulatory system do humans have?
Definition
closed double-loop
Term
red blood cells
Definition
carry oxygen with a protein called hemoglobin – most abundant blood cell
Term
white blood cells
Definition
engulf pathogens
Term
platelets
Definition
help clot blood by releasing chemicles and forming a plug
Term
Arteries
Definition
carry blood away from the heart
Term
veins
Definition
carry blood back to the heart
Term
Capillaries
Definition
tiny blood vessels
Term
location of the heart
Definition

behind sternum

between lungs

Term

how many chambers are in the heart?

what are they called?

Definition

4

right atrium

right ventricle

left atrium

left ventricle

Term
Septum
Definition
wall of muscle that seperates the left and right side of the heart
Term
how does the heart pump/contract?
Definition
atria contract then ventricles contract
Term

what side of the heart has oxygen poor blood?

oxygen rich blood?

Definition

right-oxygen poor

left-oxygen rich

Term
which way does the blood flow
Definition
from atria to ventricles
Term
what keeps blood from flowing the wrong way
Definition
valves
Term
blood pressure
Definition
pressure exerted against the artery walls
Term
what does CPR stand for
Definition
cardio-pulmonary recuscitation
Term
functions of the respiratory system
Definition
to exchange oxygen and carbon dioxide
Term

when does the diaphram contract and move down?

relax and move up?

Definition

inhale-moves down

axhale-moves up

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