Question

15-23

15) The sympathetic and parasympathetic nervous systems differ A) one has a two-neuron chain from the CNS to the effector organs, while the other has a singe 15) efferent neuron. B) in the body location of their ganglia C) in that the pre-ganglionar neuron of one systen is inside the CNS, while that of the other system is outside the CNS D) one has only myelinated axons, while the other only has unmyelinated axons 16) Collections of nerve cell bodies with dendrites inside the central nervous system that perform a 16) common function are called A) nuclei anglia C) nerves D) tracts 17) Which of the following statements is not true? 17) A) Sympathetic has extensive branching of pregangli nic fibers' parasympathetic has mi imal B) Sympathetic division has short preganglionic and long postganglionic axons; C) Sympathetic ganglia are within a few centimeters of the CNS: parasympathetic ganglia are D) Sympathetic origin is craniosacral; parasympathetic is thoracolumbar branching of preganglionic fibers. parasympathetic has long preganglionic and short postganglionic axons close to visceral organs served. 18) The surface of the cerebellum, named cortex, is and it contains 18) A) smooth; gray matter C convoluted; white matter B) convoluted; gray matter D) smooth: white matter 19) Which area is NOT normally considered to be an autonomic control center? 19) A) cerebellum O medulla oblongata B) pons D) hypothalamus 20) The white matter contains 20) A) myelinated nerve fibers only 8) myelinated and unmyelinated nerve fibers C) unmyelinated nerve fibers only D) neuron cell bodies and dendrites 21) The brain area(s) that has/have a cortex is/are the al hemispheres and cerebellum A) medulla oblongata and pons ) diencephalon pons and spinal cord 22) Schwann cells are functionally similar to A) oligodendrocytes ) microglia D) ependymal cells 23) Which of these effectors is not directly controlled by the autonomic nervous system? A) skeletal muscle B) most glands C) cardiac muscle D) smooth muscle

Answer 1

15). the sympathetic and parasympathetic nervous system differ in the body location of their ganglia.

Parasympathetic ganglia are near or in the organ they innervate and sympathetic ganglia are close to spinal cord on either side forming a long chain.

Both systems have myelinated as well as unmyelinated axons.

16). Collection of nerve cell bodies with dendrites inside the central nervous system that perform a common function are called ganglia.

17). The statement which is not true is the fourth statement because sympathetic origin is thoracolumbar and parasympathetic origin is craniosacral. The sympathetic has neural origin in thoracic and upper lumbar spinal cord. The parasympathetic has neural origin in cranium and sacral part.

18). The surface of cerebellum named cortex is convoluted and it contains grey matter.