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

CO2, 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• O2 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 tracheaTrachea branches into Bronchi and

BronchiolesBronchioles 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