T-Body Systems A-Circulatory, Respiratory, and Lymphatic Notes L-none E-Lab tomorrow (wear sneakers)

Circulatory, Respiratory, and Lymphatic System Notes EQ: How do the circulatory, respiratory, and lymphatic systems work together to maintain homeostasis?

Circulatory System Function: --uses blood to carry oxygen and nutrients to and from your cells; transports waste (CO2, urea) as well

--red blood cells (carry O2) Organs Blood --plasma (fluid) --red blood cells (carry O2) --white blood cells (fight infections) --platelets (create clots to stop bleeding)

Note: this is still under organs Heart --four chamber pump --sends blood thru entire body --Exercise leads to an increase in heart rate

Blood Vessels Arteries --Carry blood away from heart --oxygen on red blood cells carried to body Veins --carry blood towards heart --carbon dioxide on red blood cells carried to lungs Capillaries --smallest --carry blood to all other cells --connection between veins and arteries

brings oxygen into the lungs Respiratory System brings oxygen into the lungs (the major respiratory organ) Blood absorbs oxygen and releases CO2 Nitrogen from air is not used by the body Diseases: asthma, emphysema, lung cancer

--air then flows in becomes 2 tubes— Organs Nose --Gases enter and exit here Pharynx (throat) --air then flows in becomes 2 tubes— trachea and esophagus Larynx (vocal chords) --vibrates to make sound from airflow Trachea (windpipe) --passageway between the larynx and the lungs --splits into tubes called bronchi

--split and enter lungs --branch out in the lungs into bronchioles --tiny sacs at the end called alveoli Alveoli --oxygen and carbon dioxide are exchanged Diaphragm --Involuntary muscle that allows ribs to move in breathing

Lymphatic System (Immune) uses white blood cells to fight disease/infection absorbs excess fluid into tissues

Organs If you get sick and go to the doctor, you’ll get examined to see if these are swollen Lymph Nodes --hold white blood cells --remove diseases and dead cells from lymph fluid Spleen --filters blood of dead cells --releases white blood cells Tonsils --uses white blood cells to fight infection --may become infected and need removal

Working Together circulatory system carries all materials (oxygen, nutrients waste) throughout the body. Unites systems that have to move stuff.