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How do the different types of chromatography work? (No Audio)

By: HWC, Views: 5989

Chromatography is a term for a variety of techniques in which a mixture of dissolved components is fractionated as it moves through some type of porous matrix. A glass column is filled with beads of an inert matrix. The mixture of proteins to be purified is dissolved in a solution and passed ...

Stimulus (introduction)

By: HWC, Views: 6326

• Blood pressure determines the flow of blood to and from capillaries. • Low blood pressure results in reduced blood flow. • High blood pressure can cause blood vessels to break. In humans, sensitivity is due to portions of the nervous system called receptors. Receptors are typicall...

Erythropoietin (EPO)

By: HWC, Views: 6215

■ Secreted by kidney cells when blood oxygen is low. ■ Targets cells in red bone marrow that will become red blood cells. ■ Promotes increased numbers of mature red blood cells. ■ More mature red blood cells carry more oxygen so blood oxygen level is restored to normal.

Blood Test Basics

By: Administrator, Views: 9497

How blood tests are performed by a professional nurse.

Negative Feedback Regulation of Blood Pressure

By: HWC, Views: 6657

stimulus • Blood pressure determines the flow of blood to and from capillaries. • Low blood pressure results in reduced blood flow. • High blood pressure can cause blood vessels to break. Baroreceptors • The aortic arch carries blood to the body. • The common carotids ca...

Glucose Evaluation Procedure

By: Administrator, Views: 9862

Hb A1C Test Blood test used to: diagnose diabetes identify people at risk of developing diabetes monitor how well blood sugar levels are being controlled by the diabetic patient Fasting Blood Sugar (FBS) Test performed on blood to determine the level of sugar in the bloodstream. Also ref...

Structures that affect circulation - kidneys, blood volume and venous tone

By: HWC, Views: 6640

• Kidneys regulate blood volume and blood osmolarity via salt and water reabsorption. • Increased reabsorption increases blood volume and venous return (and CO). • Decreased reabsorption increases urine production, which decreases blood volume and venous return (and CO). • Systemi...

Heart Chambers

By: Administrator, Views: 9727

Circulation of blood through the chambers of the heart Septum divides heart into the right and left heart. Each side contains an upper and lower chamber: Atria, or upper chambers, receive blood. Ventricles, or lower chambers, pump blood. Valves control intake and outflow of blood in chamber...

Acid-base imbalances - compensation of metabolic acidosis and alkalosis

By: HWC, Views: 6937

1. Metabolic acidosis: • Few HC03- ions are present so blood pH becomes acidic. • Compensation is increased respiratory rate and more CO2 is removed from the blood. • Blood pH returns to normal. 2. Metabolic alkalosis: • Many HC03- ions are present so blood pH becomes alkaline...