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25 Cards in this Set
- Front
- Back
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Name the two metabolic or nutritional states of the human body.... |
Absorptive state (Anabolism predominates)
Post-absorptive state (catabolism predominates)
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Do blood glucose levels increase or decrease after feeding? |
Increase |
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Do blood amino acid levels increase or decrease after feeding? |
Increase |
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Do blood glucose levels increase or decrease during fasting? |
Decrease |
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Do blood amino acid levels increase or decrease during fasting? |
Decrease |
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Do blood insulin levels increase or decrease after feeing? |
Increase |
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Do blood glucagon levels increase or decrease after feeding? |
Decrease |
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Do blood insulin levels increase or decrease during fasting? |
Decrease |
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Do blood glucagon levels increase or decrease during fasting? |
Increase |
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The main metabolic fuel for cells and tissues is Glucose, Amino Acids or Fat? |
Glucose
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State three metabolic actions of insulin... |
The uptake of glucose by cells
Converts glucose to glycogen
Stimulates amino acid uptake (promoting protein synthesis) |
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Insulin stimulates cellular uptake of glucose, true or false? |
True |
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The brain can only use glucose as metabolic fuel, true or false? |
True |
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State the homeostatic set point for blood glucose.... |
5mmol/Litre (90mg/100ml) |
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Blood glucose levels below 3mmol per litre is known as? |
Hypoglycaemia |
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How much glucose is there in the total blood volume of an adult at 5mmolper litre? |
Approximately 4.5g |
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How long would that glucose last if it was not replaced? |
17 minutes |
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State the renal threshold for blood glucose to in the urine... |
10mmol/litre // 50mmol/5litres |
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The human liver can store approximately how much glycogen? 5g//20g//80g//500g |
80g |
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State three metabolic actions of glucagon... |
Breaking down of glycogen Converts glycogen to glucose Lipid breakdown ( fatty acids and glycerol) |
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State the two main secretory functions of the pancreas... |
*Endocrine islets of langerhans secrete hormones in aid of blood glucose
*Exocrine pancreas icini secrete alkaline juice + enzymes into pancreatic duct THEN to the duodenum.
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What do alpha cells in the pancreas secrete? |
Glucagon |
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What do beta cells in the pancreas secrete? |
Insulin |
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State the behavioural features of hypoglycaemia.. |
*Disorderly or irrational *Sweating *Pale complexion *Difficulty concentrating *Confusion *Shaking *Mistaken for drunkenness |
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TIP SHEET + or - in blood glucose concentration (Stimulus) Islets of langerhans in the pancreas (Sensor) Islets of Langerhans in the pancreas (Control centre) Liver, muscle, adipose tissue (Effectors) Blood glucose and hormones insulin/glucagon (Feedback) |
IF any of these are wrong PLEASE let me know. |
