CIRCUITS AND THE CARDIAC CYCLE Pump It!. RECALL THE HEART A series of FOURS : 4 CHAMBERS: two ATRIA and two VENTRICLES 4 VALVES: two ATRIOVENTRICULAR.
RESPIRATORY SYSTEM. Pathway of inhaled air: nasal cavity pharynx larynx trachea bronchi bronchioles alveoli Nasal cavity –Hairs and mucus.
The Cardiovascular System SBI3U: Internal Systems.
