A skateboarder falls and lands directly on his buttocks and lower back. He does not feel much pain and continues skating. After a couple of days he begins experiencing right hip pain and notices his right foot and leg are rotated to the right
A doctor diagnoses a muscle spasm. Which of the following muscles is most likely causing the leg and foot rotation?
A) Adductor longus
B) Piriformis
C) Quadratus lumborum
D) Tibialis posterior
E) Sacrospinalis
B
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The lower the pH, the higher the hydrogen ion concentration
Indicate whether the statement is true or false
Describe calcium's role in the contraction of the sarcomere in skeletal and cardiac muscle tissues. Include the following in your answer : sarcomere, myosin, actin, myosin-binding sites, cross bridge, sarcoplasmic reticulum, ATP, ADP and Pi, troponin, tropomyosin, and Ca2+ channels
What will be an ideal response?
Which structure CANNOT be seen by looking at someone's eye with an ophthalmoscope?
A) optic chiasm B) macula lutea C) fovea D) optic disc
The primary regulator of plasma Na+ concentration is ________.
A. insulin B. aldosterone C. renin D. antidiuretic hormone (ADH) E. atrial natriuretic hormone