Chapter 3 Physiology of Exercise

What are the 2 divisions of the Human Nervous System?

CNS = brain

PNS = (skin, cardiovascular)

What does the ANS Parasympathetic deal with?

Rest and Digest. Increase (Digestion) and Decrease HR

What does the ANS Sympathetic deal with?

Increase in HR, Airway, O2 delivery and Blood glucose levels (Glucogenolysis)

In the PNS, what is the difference between efferent and afferent

Afferent = relay sensory information from receptors

Efferent = transmit information away from the brain

Explain the difference between Autonomic vs Somatic

Somatic: helps stimulate skeletal muscle activity

Autonomic : regulates visceral activity

Explain the Stretch Reflex

1\. muscle spindles respond to stretch

2\. Afferent nerve fibers carry sensory impulses from spindle to spinal cord

3\. Efferent spinal cord motor neurons activate stretched muscle fibers

What do GTO’s do ?

Detect differences in tension by the muscle.

What is Oxygen Deficit

represent Oxygen not being available until a energy transfer.

What is EPOC (Excess Post Oxygen Consumption)

Helps restore the body back into it’s normal condition.

What is produced from RQ/RER=

VCO2 & VO2

Explain Lactate Threshold

When blood lactate is being produced and begins to remove lactate.