Textbook Question
Which of the following muscles attach to the hip bones?
a. Rectus abdominis
b. Rectus femoris
c. Vastus medialis
d. Vastus lateralis
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Which of the following muscles attach to the hip bones?
a. Rectus abdominis
b. Rectus femoris
c. Vastus medialis
d. Vastus lateralis
Doing the pincer grasp is an ________ movement.
a. Extending
b. Abducting
c. Adducting
d. Opposing
After ACh attaches to its receptors at the neuromuscular junction, what is the next step?
a. Sodium channels open
b. Calcium binds to regulatory proteins on the thin filaments
c. Cross bridges attach
d. ATP is hydrolyzed
Which are ways in which muscle names have been derived?
a. Attachments
b. Size
c. Function
d. Location
Compare these images of a relaxed skeletal muscle fiber and a fully contracted muscle fiber. Which would you see only in the relaxed fiber?
a. Z discs
b. Sarcomeres
c. I bands
d. A bands
e. H zones