Review

Circulatory System

Pumps blood to the body

Veins

Deoxygenated blood

Pulmonary vein

Vena cava

Inferior

Blood from the top part of the body

Superior

Blood from the lower part of the body

Coronary veins

Arteries

Move oxygenated blood

Pulmonary artery

Coronary Arteries

Deliver oxygen to the heart

Capillaries

Small branchings

Heart

Righ side

Right atrium

Right ventricle

Left side

Left atrium

Left ventricle

Valves

Tricuspid

Pulmonary

Mitral (Bicuspid) Valve

Aortic Valve

Cardiac Cycle

Vena cava → Right atrium → Tricuspid valve → Right ventricle → Pulmonary valve → Pulmonary artery → Lungs (blood leaves the CO2 and gets oxygenated) → Pulmonary vein → Left atrium → Mitral/Bicuspid valve → Left ventricle → Aortic valve → Aorta → Body → Repeat

Respiratory System

Carries out Gas Exchange

Lungs

Oxygenate blood

Expells carbon dioxide

Right lung

3 lobes (sections)

Slightly bigger than the left lung

Left lung

2 lobes (sections)

Cardiac notch to fit the heart

Oral/Nasal cavity

Pharynx

Larynx

Trachea

Has protective cartilage rings

Primary bronchi

Secondary bronchi

Tertiary bronchi

Bronchioles

Respiratory bronchioles

Alveolar ducts

Alveolar sacs

Alveoli

Muscular system (helps in the contraction and expansion of the thoracic cavity)

Diapragm

Abdominal muscles

Intercostal muscles

Skeletal system

Ribs that protect the lungs and heart

Nervous system

Detects when blood turns slightly more acidic because of rising CO2 levels (H+), after detection, it sends the order to exhale to make acidity normal again.

Have thicker walls than atria's