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BIOL 404-Growth 1
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what are the two reasons that humans must eats?
For calories
For building blocks used for growth and repair
Protein, carbohydrates and fat are readily interconverted (T/F)?
True
False
True, they are can be interconverted after being broken down into intermediates.
Protein, carbs and fat can be used for both____________ and ________________.
energy production and growth
absorptaive and postabsorpative states are under teh control of what hormones?
insulin
glucagon
epinephrine/norepinephrine
GH
sex-steroids
glucocorticoids
throxine
Which organ plays a strong role in determining the transition between absorptaive and postabsorptive states?
Pancreas
The pancreas's main role in metabolism
transition between absoptaive and postabsoptive states.
how many hours after a meal are the absobed nutrients distributed and stored?
4 hours
What two things are amino acids commonly used for?
protein synthesis and deaminated and used as fuel substrates
Amino acids leave the GI and distribute to what two areas?
Muscle and Liver
Sugars leave the GI and redistribute to what tissues?
Muscle, Liver, Adipose (Almost all tissues)
Triglycerides distribute to what tissues after absorption?
Adipose
When glucose arrives in the muscle it is converted into:
Glycogen
When glucose arrives in the adipose tissues it is converted into:
alpha-glycerol phosphate and fatty acids and then those are combined to form triglycerides
When glucose is used for energy what is it broken down into?
water, CO2 and energy
In the liver what three things can Glucose become?
alpha-glycerol phosphate
fatty acids
glycogen
Which amino acid breakdown product is used to make fatty acids and eventually triglycerides?
alpha-ketoacids
When amino acids reach the liver they can be broken down into what products?
alpha-ketoacids
NH3
Alph-ketoacids produced in the liver from AA can become what products?
energy (Co2 and water)
Fatty Acids
Tri glycerides produced in teh liver are stored where?
Adipose tissue
How many hours of fasting before nutrient stores are used?
4
What is the main emphasis of mobilizing stored nutrients?
maintaining glucose for the brain
What liver storage nutrients are can be used to make glucose?
Glycogen
Glycerol
alpha-ketoacids
Lactate
Pyruvate
Fatty acids use what intermediate to fuel tissues with energy?
ketones
what type of synthesis occurs during fasting?
Catabolism
What type of synthesis occurs during feasting?
anabolic
What fuel does the body use during feasting?
Glucose
What fuel does the body use during fasting?
Many different types
The body is concerned with make what type of molecules during feasting?
storage molecules
the body is concerned with what type of catabolism primarily during fasting?
Gluconeogenisis
What general types pf glandular cells does the pancreas contain?
exocrine and endocrine
Which general type of secretory cell is most prevalent in the pancreas?
exocrine acinar cells
What do exocrine acinar cells of the pancreas secrete?
proteases (and others) into teh small intestine.
What percent of the pancreatic mass does the islets of langerhans occupy?
1%
The islets of langerhans are what general type of secretory cell?
endocrine
A general description of the islets of langerhans is:
cluster of endocrine cells
How many types of secretory cells occupy teh pancreas?
4
what differntiates the four different types of secretory cells in the pancreas?
The peptides that they make
What are the four types of endocrine cells of the pancreas?
Alpha
Beta
Delta
F cells
What do F cells of the pancreas secrete?
pancreatic polypeptide
What do Delta cells of the pancreas secrete?
Somatostatin
What do Beta cells of the pancreas secrete?
Insulin
What do Alpha cells of the pancreas secrete?
Glucagon
Glucagon is secreted by what pancreatic cells?
Alpha cells
Insulin is secreted by what pancreatic cells?
Beta cells
Pancreatic Peptide is secreted by what pancreatic cells?
F cells
Somatostatin is secreted by what pancreatic cells?
Delta cells
What does plasma insulin cause in muscle?
Synthesis of glycogen and protein
Uptake of glucose and amino acids
What does insulin cause in the Adipose tissue?
Uptake of glucose
Synthesis of Triglycerides
What does insulin cause in the liver?
Uptake of Glucose
Synthesis of Triglycerides and glycogen
no ketone synthesis
When plasma insulin is low what is teh effect in the muscle?
Decreased uptake of Glucose
Catabolism of glycogen and protein
Relseaseof AA's
Uptake and use of Fatty acids
Decreased plasma insulin has what effect on Adipose tissue?
Decreased glucose uptake
net triglycerise catabolism
Release of glycerol and fatty acids
What effect does decreased insulin plasma concentration have on the liver?
Glucose release increases
Glycogen ctabolism
gluconeogenisis
Ketone synthesis and release
Author
kyleannkelsey
ID
210679
Card Set
BIOL 404-Growth 1
Description
BIOL 404 -Growth 1
Updated
2013-04-06T17:42:09Z
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