Search Results

Homeostasis (range of body conditions, normal limits, mild stresses & severe stresses)

By: HWC, Views: 8585

Homeostasis: • Provides relative stability of the internal environment. • Results from constant adjustments. • Regulated by regulatory processes. • Requires system interplay. • Normal limits. • Temporary stresses. • Disruptions requiring medical intervention. • D...

Erythropoietin (EPO)

By: HWC, Views: 8193

■ 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: 11561

How blood tests are performed by a professional nurse.

Labor and Delivery - Placenta Cord

By: Administrator, Views: 369

Soon after a baby is conceived, a support system, comprised of the placenta and umbilical cord, begins to develop. These two structures are essential for sustaining a healthy pregnancy, explains Donald Davis, an obstetrician in Medicine Hat, Alta., and past president of the Society of Obstetricia...

Glucose Evaluation Procedure

By: Administrator, Views: 11832

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: 8599

• 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...

Muscle Twitch and Muscle Tension - Motor unit size and force

By: HWC, Views: 8917

• A motor unit is a group of muscle cells controlled by a single neuron. • A stimulus of sufficient intensity will cause all the cells in the motor unit to contract. • A single contraction, caused by a single action potential, is called a muscle twitch. • Latent period: A brief per...

Acid-base imbalances - compensation of metabolic acidosis and alkalosis

By: HWC, Views: 8894

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...

Proteins Defined, Hierarchy & Composition of Cells

By: HWC, Views: 8127

Proteins are long chains of amino acids linked together by peptide bonds. Together with the other three biological macromolecules—carbohydrates, lipids, and nucleic acids—proteins are the building blocks of cells. Proteins are the most complex and abundant biological macromolecules in cel...