When actively contracting, skeletal muscles catabolize glucose, but at rest they rely on which of the following?
A) proteins
B) glycogen
C) nucleic acids
D) fatty acids
E) amino acids
D) fatty acids
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Receptors classified as __________ respond to heat and cold.
Fill in the blank(s) with the appropriate word(s).
The muscles in your fingers have a predominance of fast-glycolytic fibers, whereas the muscles of your feet have a predominance of slow-oxidative fibers. Which of the following statements accurately describes their differences?
A. Muscle fibers of the hands can generate greater tension than muscle fibers of the feet. B. Muscle fibers of the feet have a greater abundance of myoglobin than do muscle fibers of the hands. C. Muscle fibers in both locations are innervated by alpha motor neurons of the same diameter. D. More oxidative phosphorylation occurs in the hands than the feet. E. The muscle fibers of the feet have a greater abundance of glycogen than do the muscle fibers of the hands.
If the load on a muscle is increased, eventually a load will be reached at which the velocity of shortening becomes zero. At this point, the muscle contraction is referred to as
a. concentric. b. eccentric. c. isotonic. d. isokinetic. e. isometric.
The dural sinuses form between which two layers of the cranial dura mater?
A) pia and arachnoid layers B) periosteal and endosteal layers C) meningeal and cranial layers D) periosteal and meningeal layers E) superior and inferior sagittal layers