Chapter 6

Question 1

What are the three sources of energy for muscle contraction?

Answer 1

1. Direct phosphorylation of ADP by creatine phosphate
2. Aerobic Respiration
3. Anaerobic glycolysis and lactic acid formation

Question 2

Direct Phosphorylation of ADP by Creatine Phosphate

Answer 2

Stored C.P. transfers phosphate to ADP to turn into ATP. Lasts for about 15 seconds with a 1:1 ratio

Question 3

Aerobic Respiration

Answer 3

Slower reaction in mitochondria where glucose is broken down to CO2 and H20, releasing energy. Long lasting with a 1:32 ratio

Question 4

Anaerobic Glycolysis and Lactic Acid formation

Answer 4

Glucose is broken down without O2 by breaking dow into pyretic acid to form 2 ATP. Not efficient but fast. Lasts about forty seconds

Question 5

Two Types of Muscle contractions

Answer 5

1. Isotonic (lifting a weight)

2. Isometric (pushing against a wall)

Question 6

Two Types of exercise

Answer 6

Aerobic (running, biking)
*creates endurance and stronger more flexible muscles
Resistance (weight lifting)
*stronger and bigger muscle