Nervous System
A specialized synapse where a motor neuron communicates with a muscle fiber using acetylcholine to trigger muscle contraction.
What is the neuromuscular junction?
Thick-walled blood vessels that carry oxygenated blood away from the heart
What are Arteries?
Occurs after VT2 when buffering H+ is no longer effective
what is the respiratory compensation point?
chemical messengers secreted by glands to regulate physiological functions
what are hormones?
This regulates involuntary physiological functions such as heart rate, blood pressure, digestion, and respiratory rate
What is the Autonomic Nervous System?
Decreases heart rate via acetylcholine release
What is parasympathetic?
amount of air ventilated per unit of O2 consumed
what is VE/VO2?
acts on the same cell that secreted it
what is autocrine?
A sustained muscle contraction due to high-frequency simulation leading to maximal force output.
What is Tetanus?
The resistance of the heart must overcome to eject blood
what is Afterload?
represents the relationship between PO2 and hemoglobin
what is the sigmoidal shape or s curve?
controls hormone release from the pituitary
what is the hypothalamus?
The electrical charge difference across a neuron's membrane at rest around -70mV due to the distribution of Na+ and K+ ions.
What is resting membrane potential?
Blood flow = pressure / resistance
What is Ohm's Law?
point where ventilation increases disproportionately to oxygen consumption
What is Ventilatory Threshold?
stimulates protein synthesis, fat metabolism and IGF-1 release
what is growth hormone?
Conducts signals faster due to saltatory conduction.
What are myelinated nerves?
Spread the impulse for ventricular contraction
What are Purkinje fibers?
blood moves too fast for full oxygen loading
what is exercised-induced arterial hypoxemia?
produces cortisol and aldosterone