Which of the following is the most important normal hip movement, one that is primarily limited by the surrounding muscles?
A) extension
B) abduction
C) adduction
D) rotation
E) flexion
E) flexion
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Several hormones control the remodeling of bones. Which two respond to changing blood calcium levels?
What will be an ideal response?
Which statement best describes the importance of the biconcave shape of erythrocytes?
A) It conforms to the molecular shape of hemoglobin. B) It allows for the movement of erythrocytes out of the capillaries. C) It makes the erythrocyte small and flexible. D) It provides a large surface area for the exchange of gases. E) It allows for phagocytosis of foreign particles.
Cells that require a lot of energy will have more folds in the inner membrane of which type of organelle?
a. lysosome b. mitochondrion c. Golgi d. centriole
Output from higher brain centers can bypass both the DRG and VRG and go directly to ________, which controls the accessory muscles of respiration.
A. spinal integration centers B. the vagus nerve C. the cerebral cortex D. the diaphragm