Exam 1
This is the most common form of fat stored in the body with a glycerol backbone and three fatty acids.
What is a triglyceride?
This is the receiving end of a neuron.
What is a dendrite?
This feature serves as the primary pacemaker of the heart.
What is the SA Node?
This molecule is the first substrate use in glycolysis.
What is glucose?
When depolarized, the axon terminal stimulates the release of this substance across the synaptic cleft.
What is acetylcholine?
This hormone is released by the pancreas to transport glucose out of the blood.
What is insulin?
This is the threshold for an action potential in a neuron.
What is -55mV?
This protein allows for the storage of only 1 oxygen molecule each.
What is myoglobin?
This enzyme converts glucose to glucose-6-phosphate which is the first irreversible reaction of glycolysis.
What is Hexokinase?
In a muscle cell, depolarization travels down the membrane into this area WHICH ALSO causes Ca2+ to be released from this cellular organelle.
What is the T-Tubule and Sarcoplasmic reticulum?
This enzyme is responsible for breaking down adenosine triphosphate to release energy.
What is ATPase?
This area of the brain is required twice for muscle contraction and movement production.
What is the primary motor cortex?
This vessel is the only vessel in the body that carries oxygenated blood TO the heart.
Pulmonary Veins
Phosphofructokinase represents the enzyme controlling the rate limiting step of glycolysis. This is the product of the resulting reaction.
What is fructose 1,6-bisphosphate?
Within a sarcomere, this specific event must happen for myosin to be able to bind to actin.
What is Ca2+ binding to tropomyosin?
This byproduct is created when restoring ATP from the ATP-PCr system.
What is creatine?
A negative or supra-maximal bench press ALWAYS requires a spotter and is indicative of this type of contraction. It will also likely result in significant amounts of this.
What is eccentric contraction and DOMS?
This occurs between muscle cells and capillaries surrounding muscle cells.
What is diffusion of oxygen into the muscle and carbon dioxide into the capillaries?
There are 10 steps to glycolysis, however the final step is actually one of two separate fates for pyruvate. These steps depend on this substance, and result in these fates happening.
What is Oxygen and what is lactate production or pyruvate being used in the Kreb Cycle?
The BINDING of ATP to the myosin globular head results in this step of sliding filament theory.
What is the detachment of myosin from actin?
How many NET ATP are created from the ATP-PCr system, the glycolytic system (starting from glucose), and the aerobic respiration system respectively?
Fatigue in muscles is caused by an increase in H+ and individual phosphates. This results in a reduction of this.
This is the purpose of the bicarbonate buffer system.
To maintain the appropriate pH in the body.
These steps in glycolysis REQUIRE ATP and these steps PRODUCE ATP.
What are Steps 1 and 3?
What are Steps 6 and 9?
The release of this substance from the myosin globular head actually initiates the power stroke.
What is ADP?