The vertebral arteries enter the cranium at the foramen magnum, where they fuse along the ventral surface of the medulla oblongata to form the ________.
Fill in the blank(s) with the appropriate word(s).
basilar artery
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Matching
A) Slow (oxidative), fatigue-resistant fibers B) Fast (oxidative or glycolytic), fatigable fibers C) Fast (oxidative or glycolytic), fatigable fibers 11) Depends on oxygen delivery and aerobic mechanisms. 12) Have very fast-acting myosin ATPases and depend upon anaerobic metabolism during contraction. 13) Red fibers, the smallest of the fiber types. 14) Contain abundant amounts of glycogen. 15) Abundant in muscles used to maintain posture. 16) A relatively high percentage are found in successful marathon runners.
The pancreas appears long, white, and pale
Indicate whether the statement is true or false
Describe a hypothetical situation in which two isolated human populations evolve very different muscle fiber composition. In other words, what environmental conditions or food-gathering strategies might cause a prevalence of one fiber type (fast-twitch versus slow-twitch) to be more adaptive than another?
What will be an ideal response?
The triangular regions of the kidneys that are striped in appearance and separated by the renal columns are the ________
A) renal cortex B) renal fascia C) renal (medullary) pyramids D) renal pelvis E) calyces