Circulatory and Respiratory Ch. 30 pg. 653

Blood Types - Review Different marker proteins A has A markers, B antibodies B has B markers, A antibodies AB has both markers, no antibodies O has no markers

Blood Vessels Tubes that carry blood Arteries – carry blood away from the heart Veins – carry blood towards the heart Capillaries – tiny thin-walled vessels that allow gas exchange through their walls Valve Muscle

Main Functions of Circ and Resp Transport gases and food.  RBC’s Fight disease.  WBC’s Help maintain homeostasis.

Functions of Circulatory cont. Red Blood Cells – Erythrocytes –Contain hemoglobin – protein which carries oxygen and carbon dioxide –Sensors near the heart test the blood for too much CO 2, regulates breathing

Other Blood Cells Platelets(cell-like) – Thrombocytes  Clotting White blood cells Leukocytes – fight disease

Draw this heart Sketch this heart then we will label it.  Left and right atrium Left and right ventricles Aorta, vena cava Pulmonary artery Pulmonary vein

Heart

Circ. & Resp. Interaction O 2 and CO2 dissolve across thin epithelial layer in alveoli. Water, other substances, evaporate as well.

Cardiovascular disease causes a buildup of plaque in the arteries Coronary arteries are the arteries that give the cardiac muscle oxygen Why would the heart need oxygen? Plaque Blood Flow

When plaque blocks a coronary artery the heart muscle is not able to make enough energy and you have a heart attack What do you think the causes the plaque to buildup? Cardiovascular disease has been linked to smoking & high cholesterol

In heart bypass surgery the blockage in the coronary artery is bypassed A vein taken from the leg is connected to the aorta and then to a place beyond the blockage.

Hypertension High Blood Pressure – vessels lose flexibility Causes strain on the heart and larger vessels.

Respiratory  Drawing a breath Diaphragm flexes  can be voluntary or involuntary Air enters mouth and nose, warmed and moistened Through Pharynx and Larynx (voicebox)  Goes down trachea  Trachea branches into Bronchi and Bronchioles  Bronchioles end in Alveoli (air sacs)

Asthma - respiratory disease in which certain airways in the lungs become constricted Bronchitis – mucous accumulates in the bronchioles and does not allow as much air to pass through Emphysema – the alveoli lose their elasticity Pneumonia – the alveoli fill with liquid (pus, mucous etc)

Respiratory Circulatory and Respiratory systems interact in which part of the lungs? Capillaries Alveoli Trachea Bronchioles