Which transport process is the main mechanism for the movement of most macromolecules by body cells?
A) secondary active transport
B) receptor-mediated endocytosis
C) pinocytosis
D) phagocytosis
B
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What is the function of Golgi tendon organs?
A. They detect the angle of joints, and thus provide proprioceptive inputs about the position of the limbs in space. B. They detect stretch within tendons and inhibit the activation of alpha motor neurons to extrafusal muscle fibers in antagonistic muscles. C. They detect stretch within tendons and inhibit the activation of alpha motor neurons to extrafusal muscle fibers in the muscle attached to those tendons. D. They detect painful stimuli within tendons and inhibit gamma motor neurons to intrafusal muscle fibers in muscles attached to those tendons. E. They stimulate the ends of intrafusal muscle fibers, ensuring that sensory information about muscle length is provided, even when a muscle shortens rapidly.
For a person who starts running for exercise,
A) bone deposition is not related to bone resorption. B) bone deposition equals bone resorption. C) bone deposition is less than bone resorption. D) bone deposition exceeds bone resorption.
The force that drives fluid into lymphatic capillaries is
A. osmosis. B. diffusion of both water and solutes. C. endocytosis. D. exocytosis. E. hydrostatic pressure.
All of the following are functions of bones except
A) to protect certain internal organs.
B) to store inorganic salts.
C) to provide a set point for the control of blood pressure and body temperature.
D) to provide a source for red and white blood cells.