Section I

Question 1

Acute Response

Answer 1

response after one bout of exercise

Question 2

Chronic physiological adaptations

Answer 2

how body responds over time to stress of repeated exercise bouts

Question 3

Homeostasis

Answer 3

maintenance of a constant, unchanging internal environment by the physiological systems; normally only at rest; typically negative feedback

Question 4

Steady State

Answer 4

constant internal environment that may be different than rest

Question 5

Homeostasis vs. Steady State

Answer 5

Steady state can be restricted to describing specific mechanisms while homeostasis describes entire internal environment

Question 6

Longitudinal Research

Answer 6

tests the sam subjects and compares results over time (more accurate)

Question 7

Cross-Sectional research

Answer 7

collects data from diverse population and compares the data for each group to that population

Question 8

Myofibrils

Answer 8

contractile “threads” that run the length of the muscle fibers; made up of sarcomeres;

Question 9

Sarcomeres

Answer 9

Composed of myosin and actin

Question 10

Tropomyosin

Answer 10

covers myosin binding sites at rest

Question 11

Troponin

Answer 11

Ca2+ binding site

Question 12

Actin

Answer 12

myosin binding site

Question 13

an __________, with signals from the brain or spinal cord, releases the neurotransmitter ________ at the neuromuscular junction

Answer 13

alpha motoneuron, acetycholine (ACh)

Question 14

Excitation/Contraction Coupling summary

Answer 14

SLIDE chpt 1

Question 15

Sliding filament theory

Answer 15

Slide chpt 1

Question 16

Tools exercise physiologist has to study skeletal muscle function

Answer 16

animal models, cell culture, muscle biopsy