Chambers, Valves, Great vesseks

RIGHT ATRIUM

Location:

Function:

Send blood to:

Facts:

Pressure:

Location: Top right chamber

Function: Receives Blood From

• Superior vena cava (upper body)

• Inferior vena cava (lower body)

• Coronary sinus (heart muscle)

  Sends Blood To

  • Right ventricle

Blood Type

• Deoxygenated (low oxygen)

Important Facts

• First chamber blood enters from the body

• Thin wall because it only pushes blood to the RV

Pressure:0-33mmHg

Triscupid valves

Location

Function

Connected To

Location

Between:

• Right atrium

• Right ventricle

Function

• Opens during filling

• Closes during contraction

• Prevents blood from flowing back into the RA

Connected To

• RA

• RV

Right ventricle (RV)

Location

• Lower right chamber

• Anterior (most forward) chamber

Receives Blood From

• Right atrium

Sends Blood To

• Pulmonary artery

Connected By

• Pulmonary valve

Blood Type

• Deoxygenated

Important Facts

• Pumps blood to the lungs

• Wall thicker than RA but thinner than LV

Left Atrium

Location

Upper left chamber

Receives Blood From

• Four pulmonary veins

Sends Blood To

• Left ventricle

Connected By

• Mitral valve

Blood Type

• Oxygenated

Important Facts

• Receives freshly oxygenated blood from lungs

• Posterior chamber (toward the back)

Mitral valve.

Location

Between:

• Left atrium

• Left ventricle

Function

• Allows blood into LV

• Prevents blood from flowing back into LA

Important Fact

⭐ Only valve with 2 leaflets.

Left ventricle

Location

Lower left chamber

Receives Blood From

• Left atrium

Sends Blood To

• Aorta

Connected By

• Aortic valve

Blood Type

• Oxygenated

Important Facts

⭐ Thickest wall in the heart.
⭐ Pumps blood to the entire body.
⭐ Highest pressure chamber.

Aortic valve

Location

Between:

• Left ventricle

• Aorta

Function

• Opens during systole

• Prevents blood from returning to LV

Aorta

Location

Largest artery leaving the heart.

Connected To

• Aortic valve

• Entire body

Blood Type

• Oxygenated

Important Facts

Largest artery in the body.

Main sections:

1. Ascending aorta

2. Aortic arch

3. Descending thoracic aorta

4. Abdominal aorta

Pulmonary veins

Location

Travel from lungs to heart

Connected To

• Lungs

• Left atrium

Blood Type

• Oxygenated

Important Fact

⭐ Only veins carrying oxygenated blood.

Lungs

Function

• Oxygen enters blood

• Carbon dioxide leaves blood

Blood becomes:

• Oxygenated

Pulmonary artery

Location

Leaves the right ventricle.

Connected To

• Pulmonary valve

• Right and left pulmonary arteries

• Lungs

Blood Type

• Deoxygenated

Important Fact

⭐ Only artery carrying deoxygenated blood

Pulmonary valve

Location

Between:

• Right ventricle

• Pulmonary artery

Function

• Opens to allow blood into pulmonary artery

• Prevents blood from returning to RV