Which of the below answers is NOT correct concerning a preganglionic neuron? Select one: a. Its cell body is in the brain or spinal cord. b. It forms a gap junction with the postganglionic neuron. c. It forms the first part of an autonomic motor pathway. d. Its axon exits the CNS with a cranial or spinal nerve. 2. The formation of a blood clot is known as which of the following? Select one: a. Leukocytosis b. Erythropoiesis c. Hemostasis d. Coagulation 3. A person with A+ blood group has the following antigens on his red blood cells. Select one: a. Has A antigen but lacks B antigen and Rh antigen. b. Has A antigen but lacks Rh antigen. c. Has A antigen and Rh antigen. d. Has A antigen, B antigen, and Rh antigen. 4. Which one of the following is made up primarily of fibers producing epinephrine? Select one: a. Preganglionic neurons of the sympathetic division b. Postganglionic neurons of the sympathetic division c. Postganglionic neurons of the parasympathetic division d. All motor fibers of the somatic motor system 5. Motor neurons of the Enteric nervous system monitor: Select one: a. The secretion of gastric cells b. The blood pressure c. The heart rate d. The contraction of the abdominal skeletal muscles 6. Which of the following is associated with the "flight-or-fight" reaction? Select one: a. Increased gastric motility b. Reduced urinary output c. Glycogen synthesis d. Pupillary constriction 7. Which of these actions is not a flight-or-flight response? Select one: a. Constricting blood vessels b. Dilatation of the pupil of the eyes c. Stimulation of lacrimation d. Increasing blood glucose level 8. The gap between two adjacent myelin segments along an axon is called the: Select one: a. Axonal cleft b. Node of Ranvier c. Leakage d. Synaptic cleft
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b. It forms a gap junction with the postganglionic neuron. (This is not correct, as preganglionic neurons do not form gap junctions with postganglionic neurons.) Show more…
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REVIEW QUESTIONS 1. Which of the following connect the CNS from superior to inferior? a) Anterior commissure, b) Longitudinal fasciculi, c) Projection fibers, d) Arcuate fibers 2. Myelinated fibers in the CNS are called? a) Nerves, b) Ganglia, c) Tracts, d) Pathways 3. The musculocutaneous nerve comes out of the _______. a) Cervical plexus, b) Brachial plexus, c) Lumbar plexus, d) Sacral plexus 4. The _______ nerve comes out of the _______. a) Femoral, lumbar plexus, b) Radial, sacral plexus, c) Sciatic, brachial plexus, d) Tibial, lumbar plexus 5. The dorsal root ganglia contain _______ a) Arcuate fibers, b) Efferent neurons, c) Afferent neurons, d) Longitudinal fibers 6. Which of the following provides innervation to the arms? a) Brachial plexus, b) Sacral plexus, c) Lumbar plexus, d) Cervical plexus 7. Which of the following communicates the brain from frontal lobe to occipital lobe? a) Longitudinal fasciculi, b) Arcuate fibers, c) Projection fibers, d) Anterior commissure 8. The _______ holds the spinal cord by anchoring it to the lateral walls. a) Conus medularis, b) Cauda equina, c) Filum terminale, d) Denticulate ligament 9. The _______ gives of the _______ a) Sacral plexus, median nerve, b) Lumbar plexus, sciatic nerve, c) Cervical plexus, phrenic nerve, d) Brachial plexus, common peroneal nerve 10. What is the name of the liquid portion inside of axon? a) Axolemma, b) Sarcoplasm, c) Axoplasm, d) Perikaryon 11. What is the name of the organelle that synthesizes protein in the neuron? a) Golgi body, b) Sarcoplasmic reticulum, c) Endoplasmic reticulum, d) Nissl bodies 12. Which of the following cells myelinates more than one axon in the nervous system? a) Schwann cells, b) Myocytes, c) Oligodendrocytes, d) Osteocytes 13. A fascicle is a collection of _______? Answer: ______________________ 14. Which of the following is the correct flow of information? a) Effector>CNS>PNS>CNS>Receptor, b) Effector>PNS>CNS>PNS>receptor, c) Receptor>PNS>CNS>PNS>effector, d) Receptor>CNS>PNS>CNS>Effector 15. This layer is called _______ and the cell depicted is found in the _______? Answer: ______________________
Josee P.
1. What is the principal function of the thalamus? Group of answer choices a. It controls voluntary movement b. It modifies all motor movement c. It is the critical area for control of autonomic function d. It is the site where all somatosensory information is relayed to the cortex. 2. A doctor takes a hammer and stimulates the knee-jerk reflex. Your quadriceps contract and your hamstrings relax. If only one motor neuron innervated each muscle, how many neurons had to fire to produce this reflex? Don't forget to count the sensory part of the reflex. Group of answer choices a. 1 b. 2 c. 4 d. 3 3. You touch a hot pan. How many neurons must fire to reach the cortex and feel the pain? Group of answer choices a. 3 b. 1 c. 2 d. 4 4. In the spinal cord are two areas termed "enlargements" one in the cervical cord, one in the lumbar cord. Why are these areas enlarged? Group of answer choices a. They are swollen because they are easily damaged b. The areas have more myelin c. Neurons, axons, and glia in those areas are bigger d. They contain neurons that serve the limbs and axons on their way to or from the brain 5. What brain region produces automatic behaviors necessary for survival, controls sleep, and regulates endocrine function? Group of answer choices a. Hypothalamus b. Cerebrum (cerebral cortex) c. Brainstem d. Thalamus e. Cerebellum 6. The peripheral nervous system must communicate with the central nervous system. What structures link the peripheral and central nervous systems? Group of answer choices a. Cranial and spinal nerves b. Cerebellum c. Cerebrum (cerebral cortex) d. Hypothalamus e. Peripheral ganglia 7. What part of a neuron receives synaptic input and transmits postsynaptic potentials to the cell body? Group of answer choices a. Dendrites b. Myelin c. Axon terminal d. Axon initial segment
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Choose the correct statement: a. Neurotransmitters diffuse across the myelin sheath. b. An inhibitory neurotransmitter makes it less likely that an action potential will be generated in the presynaptic (before the synapse) neuron. c. Neurotransmitters are stored in synaptic vesicles. d. Most interneurons are found in the peripheral nervous system.
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