circulatory and respiratory systems. the circulatory system
TRANSCRIPT
Circulatoryand
RespiratorySystems
TheCirculatory
System
Functions of the circulatory system
• Carries nutrients and oxygen to the body.
• Removes waste from body.• Carrier system for the body
– Hormones– Antibodies
Organs of the circulatory system
• Heart – pumps blood through the body.• Arteries – carry blood away from the heart.• Arterioles – connect arteries to capillaries.• Veins – carry blood back to the heart.• Venules – connect veins to capillaries.• Capillaries – structures where gasses (O2 and CO2), nutrients,
hormones and waste products are exchanged
Veins
Arteries
Circulatory System
How the circulatory system works
The Respiratory
System
Functions of the respiratory system
• Gas exchange.• Takes in oxygen• Removes carbon dioxide
Organs of the respiratory system
• Nose• Pharynx• Larynx – Voice Box
• Trachea• Lungs• Bronchus• Bronchioles• Alveoli
How the Respiratory
System Works
Airflow of Respiration• Air enters body through nasal cavity or
mouth.• It passes through the pharynx (throat), the
larynx (voice box), and into the trachea.• The trachea branches into two tubes
called the bronchi• Each bronchus branches many times into
smaller tubes.• The smallest tubes are called bronchioles• At the end of each tube is a cluster of
small sacs called alveoli.
Gas Exchange•Oxygen molecules pass from the alveoli to the capillaries.
•Capillaries release carbon dioxide (CO2) to the alveoli.