QUESTION 73 What carries motor commands from the brain along the spinal cord? a. Spinal nerves b. Descending tracts c. Ascending tracts d. Both ascending and descending tracts e. None of the these. QUESTION 74 Which of the following statements is FALSE? a. Taste signals travel from the tongue through the facial and hypoglossal nerves. b. The middle ear consists of an air-filled chamber. c. Rods secrete glutamate from the base of the cell when NOT exposed to light. d. Peptide hormones are synthesized by the rough endoplasmic reticulum. e. None of the these. QUESTION 75 Neurosomas of the ventral root are located in the __, whereas neurosomas of the dorsal root are located in the ___ . a. posterior root ganglion; gray matter b. posterior root ganglion; white matter c. gray matter; posterior root ganglion d. posterior horn; anterior horn e. white matter; posterior root ganglion f. None of the these. QUESTION 76 In what region do the ventral rami of the spinal nerves NOT form nerve plexuses? a. the cervical region. b. the sacral region. c. the thoracic region. d. the lumbar region. e. the brachial region. f. None of the these. QUESTION 77 A neuron whose axon synapses in the adrenal medulla is a __ neuron, and releases the neurotransmitter ___ . a. somatic; norepinephrine (NE) b. preganglionic; acetylcholine (ACh) c. postganglionic; norepinephrine (NE) d. postganglionic; acetylcholine (ACh) e. preganglionic; norepinephrine (NE) f. None of the these. QUESTION 78 A major difference between smooth muscle fibers and skeletal muscle fibers in terms of calcium influx is that ____. a. calcium ions are stored in the sarcoplasm of skeletal muscle b. calcium ion influx occurs mostly from the extra cellular fluid in smooth muscle c. smooth muscle contraction does not involve calcium d. Both (i) calcium ions are stored in the sarcoplasm of skeletal muscle and (ii) calcium ion influx occurs mostly from the extra cellular fluid in smooth muscle. e. None of the these.
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Descending tracts For QUESTION 74, the FALSE statement is: Answer: a. Taste signals travel from the tongue through the facial and hypoglossal nerves. For QUESTION 75, neurosomas of the ventral root are located in the __, whereas neurosomas of the dorsal root 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. Which of the following is found only in the central nervous system? Group of answer choices: a. spinal nerves b. Pacinian (or lamellated) corpuscles c. Free nerve endings d. basal nuclei or basal ganglia 2. The meninges are connective tissue layers which protect nervous tissue. Which of the layers forms the outer covering of the brain and spinal cord? Group of answer choices: a. pia mater b. dura mater c. perineurium d. arachnoid e. epineurium 3. What do the subarachnoid space, the central canal of the spinal cord, and the ventricles have in common? Group of answer choices: a. they are the site where nerves enter/exit the central nervous system b. They provide the space where neurotransmitters are able to reach their receptors c. they contain cerebrospinal fluid d. they provide a way for waste products to leave the central nervous system 4. There are no neurons outside of the central nervous system. Group of answer choices: a. True b. False 5. How could you increase the strength of a synapse? Group of answer choices: a. Increase the speed of neurotransmitter degradation b. Increase the size of the cell body c. Decrease the number of synaptic vesicles d. Increase the number of receptors in the postsynaptic terminal 6. Which of the following brain functions require synaptic plasticity? Group of answer choices: a. All of the above b. Neural development c. Both neural development and recovery from injury d. Recovery from injury e. Firing action potentials 7. Referred pain is caused by many first-order pain-sensing neurons sending signals to the same set of second-order neurons in the dorsal horn. This can lead to pain signals from internal organs, like the heart, being perceived by the brain to come from skin areas like the upper arm. This instance of many axons sending signals to the same few neurons is an example of what kind of neural circuit organization? Group of answer choices: a. Parallel processing b. Convergence c. Divergence d. None of the above
Matthew S.
70. The structure of the CNS that serves to regulate heart rate and breathing rate is the: a) Cerebellum b) Pituitary gland c) Spinal cord d) medulla oblongata 71. In Deuterostomes, nutrient molecules are taken into the circulatory system of the small intestine by way of: a) Bones b) kidney tubules c) Alveolus d) Capillaries e) Veins. 72. The properties of the plasma membrane that are specialized in nerve cells include: a) Separation of the fluid environments inside and outside the cell. b) Regulation of molecules and ions that pass into and out of the cell. c) electrical impulses and chemical communication between different cells, d) Maintaining unequal Na+ and K+ concentrations on the two sides of the membrane, e) All of these are true 73. Olfaction (sense of smell) and taste are senses based on the detection of: a) chemicals b) light c) sound d) pressure e) movement 74. In humans, Cardiac muscle (the pacemaker center in the right atrium) is inhibited by ____ nerves: a) Adipose cells b) frontal lobe c) sympathetic d) parasympathetic 75. The evolution/development of the liver and kidney is most closely related to specialization of stem cells from the a) ectoderm b) the endodermal c) neurocytes d) original mesoderm e) all of these . 76. In vertebrates, large macromolecules are hydrolyzed to form monomers which can be used by all cells of the organism. The entire process involves which of the following: a) hydrolysis of molecules by enzymes b) active transport of monomers across cell membranes c) absorption of monomers into the capillaries d)"a", "b" and "c" are true e) none are true. 77. The part of neurons that collect information and bring it to the cell body are: a) electrons b) dendrites (receptors) c) axons d) terminal filaments e) synaptic vesicles 78. Which of the following glands would have the wide-reaching effect on integrating functions to insure homeostasis in an adult human by releasing molecules into the circulatory system? a) adrenal glands b) pituitary gland c) thyroid gland d) gonads e) all are true
Marlyn J.
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