Circulatory+System-+Period+2


 * Chelsey, Mike, Juan, Melissa, Penelope, Ryan **


 * In logical order complete all of the research points required for your body system.

MAJOR __FUNCTIONS__ OF THE CIRCULATORY SYSTEM. 1. to circulate blood throughout the body



vessles: hollow tubes that carry blood through out the body

3 types of vessles.

. arteries: carry blood away from the heart.

. veins: carry blood back to the heart.

. capillaries: connect the arteries to veins. capillaries are microscopic blood vessles with walls that are only ones cell thick. capillaries form a dense network which reaches virtually every cell in the body.

__provides 2 important vital health statistics pulse, blood, pressure__ ** **2. Heart

parts of the heart 2 atrias from the top of the heart

2 ventricles form the bottom of the heart 4 cavities

2 cavities called atria

2 called ventricles 2 ventricles meet at the bottom of the heart to form a pointed base. **

Venae Cavae: sends oxygen-poor blood to the right atrium from the head and body Aorta: largest blood vessel in the body

Pulmonary circulation is the movement of blood from the heart to the lungs and back to the heart while Systemic circulation supplies nourishment to all of the tissue located throughout the body except for the heart and lungs.

Blood pressure is the force of blood pushing against the walls of the arteries. Blood pressure increases when yourheart beats faster.

RED BLOOD CELLS **media type="youtube" key="fQNrW8O9I10" height="344" width="425" RED BLOOD CELLS TRANSPORT OXYGEN AND SOME CARBON DIOXIDE DOES NOT HAVE A NUCLEUS CONTAINS HEMOGLOBIN. RED BLOOD CELLS MAKE UP 44% OF THE TOTAL VOLUME OF BLOOD. RED BLOOD CELLS ARE EQUIPPED WITH AN IRON CONTAINING PROTEIN MOLECULES CALLED HEMOGLOBIN.

BLOOD HAS AN IMPORTANT ROLE IN THE CIRCULATORY SYSTEM.

HEART RATE** HEART RATE IS CONTROLLED BY HORMONES CALLED ADRENALIN AND THE SYMPATHETIC NERVOUS SYSTEM.


 * BLOOD PRESSURE A.K.A SYSTOLIC PRESSURE THE FORCE OF ALL YOUR BLOOD RUSHING AGAINST THE WALLS OF ALL YOUR ARTERIES. MANY THINGS CAN RAISE OR LOWER BLOOD PRESSURE SUCH AS SALT, CHOLESTERAL AND EMOTIONS SUCH AS ANGER. THE LOWEST PRESSURE OCCURS JUST BEFORE VENTRICLES CONTRACT AGAIN AND IS CALLED DIASTOLIC PRESSURE.**

MY SYSTEM MIGHT BE INVOLVED IN ROBIN'S INJURY REASON: BLOOD HAS IN IMPORTANT ROLE IN THE CIRCULATORY SYSTEM.

INFO ABOUT ROBIN'S INJURY :


 * SURVIVED AT LEAST 2 HOURS
 * INTERNAL BLEEDING
 * NOT STAYING AWAKE
 * COLD
 * LOST LARGE AMOUNTS OF BLOOD
 * SHOT IN TORSO NOT THE HEART