During the first 15 seconds of intense exercise, such as sprinting or power lifting, most of the energy is provided by ___________.
A) ATP in muscle fiber.
B) ATP in muscle fiber and phosphocreatine.
C) carbohydrate oxidation.
D) phosphocreatine.
E) fat oxidation.
B) ATP in muscle fiber and phosphocreatine.
Anatomy & Physiology
You might also like to view...
Erection is caused by muscle contraction in the penis.
Answer the following statement true (T) or false (F)
Anatomy & Physiology
By binding to the Ca2+ channel proteins, drugs known as calcium channel blockers have two main effects. Name them. Why are some cells unaffected by these drugs?
What will be an ideal response?
Anatomy & Physiology
A ____ epithelium has several layers of epithelial cells thick
a. simple b. stratified c. pseudostratified d. columnar
Anatomy & Physiology
Which of these body regions is located on the posterior body surface?
A) antebrachial B) umbilical C) gluteal D) plantar E) pubic
Anatomy & Physiology