Label G represents which structure(s)?
A) larynx
B) trachea
C) pharynx
D) bronchus
E) bronchioles
B) trachea
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Which muscles are important in sitting cross-legged, as one might sit around a campfire?
What will be an ideal response?
The electron transport system:
a. occurs in the mitochondria b. follows the citric acid cycle c. follows glycolysis d. both A and B above
Which muscle closes the eye?
A. Zygomaticus minor B. Orbicularis oculi C. Levator palpebrae D. Depressor anguli oris E. Orbicularis oris
Describe the pyramids of the medulla oblongata and a decussation
A) The pyramids contains tracts of sensory fibers that originate at the cerebral cortex. Some of the sensory fibers cross to the opposite sides of the medulla oblongata and that crossing over is called a decussation. B) The pyramids contains tracts of sensory fibers that originate at the spinal cord. Some of the sensory fibers cross to the opposite sides of the medulla oblongata and that crossing over is called a decussation. C) The pyramids contains tracts of motor fibers that originate at the cerebral cortex. Some of the motor fibers cross to the opposite sides of the medulla oblongata and that crossing over is called a decussation. D) The pyramids contains tracts of motor fibers that originate at the spinal cord. Some of the motor fibers cross to the opposite sides of the medulla oblongata and that crossing over is called a decussation. E) The pyramids contains tracts of motor fibers that originate at the spinal cord. All of the motor fibers stay on the same side of the medulla oblongata and that is called a decussation.