Circulatory and Respiratory Systems. The Circulatory System.

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Presentation transcript:

Circulatory and Respiratory Systems

The Circulatory 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 (O 2 and CO 2 ), 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 (CO 2 ) to the alveoli.

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