Starts with SA node located in right atrium of heart wich initiates electrical impulses that determine heart rate aka pacemaker

Then to the AV node- located in the wall of right atrium and directs impulses to wall of ventricals bundle of his

then out to the pukinkje fibers

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Atrium - superior chamber of heart that recieve blood from veins and forces it into ventricals

Ventricals - the inferior chamber then forces it ino the artieries

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THe amount of blood pumped out of the heart with each contraction

• The difference between Ventrical end diastolic volume and end- systolic volume

Heart Rate x stroke volume

• The overal performance of the heart

1. Red blood cells -carry oxygen form lungs throughout body
2. white blood cells - These help fight infection
3. platelets - help with clotting

55% of plasma

45% of red white and plateles

1. Transportation -o2, nutrients, waste, hormones, heat
2. Regulation -body temp and acid balance
3. Protection - excessive bleeding, immune cells to fight disease

Artieries - Transport blood away from heart

Capilleries - smallest blood vessels exchange of chemicals

Veins -transport blood to the heart

1. sternum
2. ribs
3. vertabrae

1. diaphragm
2. external intercostaals
3. Scalens
4. sternocleidomastoid
5. pectoralis minor

1. Internal intercostals
2. Abdominals

Conduction airways

and

Respiratory airway

Nasal cavity

oral cavity

Pharynx

Larynx

Trachea

Right and left bronchi

Bronchioles

Alveoli

Alveolar Sacs

The processs of getting oxygen from the environment to the tissues of the body

this is how oxygen gets from the outside environment to the tissues of the body

1. Inspiratory - (breathing in) is active
2. Expiratory - (exahale) can be passive and active