What are bone markings? Explain the difference between depressions, openings, and projections as related to bone markings
What will be an ideal response?
Bone markings are surface features, such as depressions, openings, and projections. Depressions allow blood vessels and nerves to travel along a bone, or provide a place where two bones can articulate (form a joint). Openings enclose delicate structures and allow them to travel through bones. Projections provide sites where bones articulate or to which ligaments and tendons attach.
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During muscle contraction, all of the following occur, except
A) ATP is hydrolyzed. B) Myosin heads bind to actin. C) The H band becomes shorter. D) Calcium concentration in the sarcomere increases. E) Hemoglobin concentration in muscle fibers increases.
Body weight is borne by the two largest tarsal bones: ________ and ________
A) navicular, calcaneus B) talus, calcaneus C) navicular, cuneiform D) talus, navicular
Elongation of the polypeptide continues as long as a new tRNA molecule situates in the:
A) M site of the ribosome. B) A site of the ribosome. C) P site of the ribosome. D) E site of the ribosome.
Which of these has the highest H+ concentration?
A) Saliva, pH = 6.6 B) Tomato juice, pH = 4.7 C) Red wine, pH = 3.2 D) Household ammonia, pH = 10.8 E) Lemon juice, pH = 2.3