When a walking person lifts one foot off of the ground, which of these happens?
A. The body leans so that the center of gravity shifts over the foot that is lifted off the ground.
B. The body only accelerates forward, so the center of gravity remains directy between the two feet.
C. The body accelerates forward, but the center of gravity shifts over the foot that is lifted off the ground.
D. The body leans so that the center of gravity shifts over the foot that is on the ground.
E. The center of mass is left behind by the acceleration of the body, so the body must lean forward to compensate.
D
You might also like to view...
Why do steroids take so long to generate change when they bind to intracellular receptors?
A) The intracellular receptors have very slow kinetics. B) The bound receptors affect gene transcription rates. C) The steroid receptor complex activates signal transduction pathways. D) The steroid receptor complex must then exit the cell to exert its effects.
What part of the retina lacks photoreceptors?
A. Posterior retina B. Macula lutea C. Fovea centralis D. Optic disc E. All of the choices are correct.
Binding of the first messenger to the receptor activates the ____________________, which is a membrane-bound intermediary
Fill in the blank(s) with correct word
Damage to the dorsal root of a spinal nerve results in
A) loss of motor control. B) loss of parasympathetic function. C) loss of sensory input. D) both A and B E) all of these