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Circulation and Respiration
Atrium
Atrium definition: One of the two upper chambers of the heart, it receives blood from the body.
Related Terms
Alveolus
Artery
Asthma
Blood
Blood Pressure
Bronchus
Capillary
Cardiovascular System
Circulatory System
Diaphragm
Emphysema
Heart
Heart Attack
Hemoglobin
Hypertension
Larynx
Lung
Lymph
Lymphatic System
Lymph Node
Pharynx
Plasma
Platelet
Pulmonary Circulation
Red Blood Cell
Respiration
Respiratory System
Systemic Circulation
Trachea
Vein
Ventricle
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