Which movement results after the contraction of the serratus anterior muscle?
A. scapular protraction and rotation
B. abduction of the humerus
C. scapular elevation
D. scapular retraction
Answer: A. scapular protraction and rotation
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A reversible reaction is one where
A) there are large changes in the net free energy from substrate to product. B) there is no change in the net free energy from substrate to product. C) there are small changes in the net free energy from substrate to product. D) a reaction between products is unlikely due to the high activation energy.
The ventral branches or rami of spinal nerves do NOT join to form nerve plexuses in which of the following spinal cord areas?
A) cervical B) lumbar C) sacral D) thoracic
Which of the following is associated with vasoreflexes?
A) Elastic tissue in the tunica externa B) Smooth muscle in the tunica media C) Collagen and elastic tissue in the tunica media D) Endothelium in the tunica interna E) Fenestrations in the tunica externa
Like skeletal muscle cells, cardiac muscle cells have an absolute refractory period prior to repolarization.
Answer the following statement true (T) or false (F)