Respiration & Circulation Accel Bio 2005 Respiration Self-review Topics Location & Function of structures of human respiratory system –diaphragm, alveoli,

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Presentation transcript:

Respiration & Circulation Accel Bio 2005

Respiration Self-review Topics Location & Function of structures of human respiratory system –diaphragm, alveoli, lungs, bronchioles, bronchi, trachea, larynx, epiglottis, pharynx, nasal cavity, mouth, cilia, mucus, mucous membrane Mechanical control of breathing –role of diaphragm and rib cage

Respiration topics for discussion Chemical control of breathing –Role of CO 2 levels in blood –Blood chemistry & pH Oxygen delivery by Hemoglobin & the Bohr effect Adaptations to breathing at altitude Dangers of carbon monoxide, altitude sickness, & smoking

Chemical control of breathing is controlled by CO 2 levels in blood

The medulla controls the breathing rate by monitoring blood pH

Oxygen Delivery by Hemoglobin & the Bohr Effect

Altitiude Adaptations: Hb O 2 saturation in different species

Circulation & Blood Self-review Topics Evolution of vertebrate circulatory systems –comparative anatomy of fish & mammal heart/ circulation hearts with 2 & 4 chambers respectively single circuit blood flow v. dual circuit blood flow (pulmonary & systemic) respectively Location & Function of structures of human circulatory system –Heart structure (chambers, valves & blood vessels) and path by which blood flows through it (deox. & oxygenated blood) –Cardiac cycle (systole/diastole, how happens, role of SA node, AV node, Bundle of His) –Systemic & Pulmonary circulation –Blood vessel structure & function (arteries, veins, capillaries)

Circulation topics for discussion Blood pressure & velocity Cardiovascular disease (types & causes) Blood makeup & function ABO Blood typing If time: Fetal circulation

Blood Pressure in Various Vessels, Blood Vessel Area & Blood Velocity

Types of Cardiovascular Disease CV Disease Risk Factors: – Examples of CV disease: –Hypertension –Atherosclerosis –Angina pectoris –Coronary thrombosis –Stroke

CV Disease: Atherosclerosis What is it? –A good definition & description of arteriosclerosis & atherosclerosis: Occlusion (blockage) Remaining opening

Other Manifestations of CV Disease Angina pectoris Coronary thrombosis Stroke

Treatment of Atherosclerosis in Coronary Arteries Angioplasty Angioplasty with Stent insertion By-pass surgery

Blood Makeup 1 2 3

ABO Blood Typing

Type A Type B Type AB Type O

Fetal Circulation

Image Sources Mammalian Circ & Heart1: Respiration (various): Block artery: Athero.jpg: atherosclerosis_1x.jpg: athero comparison: us/support/topic.asp?hwid=hw139808http:// us/support/topic.asp?hwid=hw Angina: Angina Man in snow: Angina ManPuking: Angina symptoms: Angioplasty: Stent in hand: _media/stent2.jpg Angioplasty with Stenting: Stenting phases: Blood type, Preg Rh neg blood, blood donor: Fetal Circulation:

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