Card Set Information
What are some examples of nutrient uses?
synthesis of support tissues
regulation and delivery of fuel supplies
storage of excess energy
What occurs in anabolic pathways?
What occurs in catabolic pathways?
Where do CHOs and proteins go?
small intestine to the liver
Where can glucose be stored?
in the liver or in the muscle (primarily muscle)
What can be made into proteins?
Where do lipids go?
packaged as lipoproteins and either go straight to fatty acids in the muscle or go through the lymphatic system first and then into adipose tissue
What are lipids made into?
What can be used by the CNS for energy?
only glucose, not fat
What can help restore the liver?
proteins from skeletal tissue
Where are different types of fuels stored?
glucose in the liver
lipids in adipose tissue
amino acids in skeletal muscle
Why is there a constant need for food?
ATP is not stored
How is ATP regenerated?
through Phosphorylation of ADP
Where does energy come from?
CHOs and fat stores
What can glucose be turned into?
glycogen, pyruvate or fatty acids
How does glucose get into the cell?
insulin from the pancreas opens a transporter to allow glucose into the cell
Where does anaerobic regeneration occur?
in the cytoplasm
Describe the PCr pathway.
only muscles use this pathway
brings in an instant supply but only lasts for about 15 seconds
1:1 ratio PC to ATP
more common in speed horses
changes glucose into pyruvate
uses glycogen to produce energy
regenerates more ATP than PCr
slow twitch muscles:
has lots of mitochondria
fast twitch muscles:
has few mitochondria
PCr and Glycolysis
by-product of glycolysis:
What's the difference between breaking down glycogen and adipose tissue?
it takes more oxygen to break down on molecule of fatty acid than glycogen
When heartrate is above 150:
horse is no longer burning fat and is now using anaerobic metabolism and burning muscle stores
What is the target heartrate to burn fat?
What turns fatty acids into ATP?
What is the primary source of energy from 0-80% intensity level?
What is the primary source of energy at more than 80% intensity?
What VFAs are made into fat?
What VFAs are made into glucose?