Muscle Metabolism

Question 0

Aerobic exercise

Answer 0

Absence of oxygen

Question 1

Sliding filament theory

Answer 1

Theory that thin filaments slide past thick ones during muscle contractions, overlap increases. Sacromere shortens and z discs move closer together

Question 2

Isotonic contraction

Answer 2

Muscle changes in length and moves the load

Question 3

Isometric contraction

Answer 3

Muscle does not shorten, load is too great to overcome

Question 4

Rigor Mortis

Answer 4

Cell membranes leak. Calcium is leaked out of SR into sarcoplasm. Myosin heads bind with actin. Cross bridges cannot be broken. Begins 3-4 hours after death, lasts 48-60 hours until enzymes digest bridges

Question 5

Fast twitch fibers

Answer 5

Contract quickly. Does not depend on oxygen. Fatigue easily. Thick. White

Question 6

Slow twitch fibers

Answer 6

Contract slowly. Depend on oxygen. Thin. Fatigue resistant. Red. High in myglobin

Question 7

Resistance exercise

Answer 7

Type of exercise used to increase muscle mass. Lifting, isometric exercise

Question 8

Cramp

Answer 8

Spasmodic muscle contraction without complete relaxation.

Question 9

Muscular dystrophy

Answer 9

Group of inherited muscle destroying diseases. Muscle degenerates. Appears in childhood usually.