The electroencephalogram (EEG) is a recording of ________
A) electrical activity of muscles of the skull
B) summed electrical activity of many neurons in the brain
C) electrical potentials in the skin of the scalp
Answer: B
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Sperm enter the cervical canal through the external
A) isthmus. B) ampulla. C) fimbra. D) os. E) commissure.
Which of the following statements is TRUE with regard to the motor control hierarchy?
A. The highest level of the hierarchy of motor control includes the frontal lobe cortex, the primary motor cortex, muscle sensory receptors, and the basal nuclei. B. The highest level of the hierarchy of motor control is composed entirely of areas of cerebral cortex, and its main purpose is to create a conscious plan to move that depends on the initial position of the parts of the body in space. C. Neurons of the middle level of the hierarchy integrate afferent information with signals from higher center command neurons to create a motor program--a pattern of neural activity required to properly perform a desired movement. D. The local level of the motor control hierarchy includes the premotor and primary motor regions of the cerebral cortex, as well as the alpha motor neurons and muscle fibers themselves. E. Reflexes that include local-level receptors and muscle fibers cannot occur without input from the higher centers of the motor control hierarchy.
Which of the following is true of the foramen magnum?
A) It is the second largest foramen in the cranium. B) It is located between the parietal and occipital bones. C) It is located in the inferior surface of the occipital bone. D) It allows passage of the carotid arteries into the head. E) None of the answers are correct.
The division of the autonomic nervous system that prepares the body for intense levels of activity and stress is the
A) somatomotor division. B) intramural division. C) craniosacral division. D) sympathetic division. E) parasympathetic division.