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A & P Lecture
Chapter 12, 13, 14
| Question | Answer |
|---|---|
| Which of the following is an incorrect statement? a. there are 7 cervical nerve pairs b. there are 12 thoracic nerve pairs c. there are 5 lumbar nerve pairs | a. there are 7 cervical nerve pairs. |
| The spinal root that has a noticeable swelling is the: | c. dorsal root |
| The dorsal root ganglion contains: | a. sensory neuron cell bodies |
| The phrenic nerve innervates the: | b. diaphragm |
| The femoral nerve arises from the: | a. lumbar plexus |
| Somatic effectors are: | b. skeletal muscle |
| When the outer sole of the foot is stimulated, a normal infant will extend the great toe. This is called the: | a. Babinski reflex |
| Which is the neurotransmitter in a somatic motor pathway? | a. acetylcholine |
| Somatic motor and autonomic pathways share all of the following except: a. direction of impulse conduction. b. effectors located outside the CNS. c. number of neurons between the CNS and effector. d. acetylcholine as a possible neurotransmitter | c. number of neurons between the CNS and effector |
| Within the sympathetic chain ganglion, the preganglionic fiber may: a. synapse with a sympathetic postganlionic neuron. b. send an ascending branch through the sympathetic trunk. c. pass through chain and synapse in a collateral ganglion. d. all above | d. all of the above |
| Beta receptors bind with: | b. norepinephrine |
| Which of the following is not an example of sympathetic stimulation? | a. constriction of the bronchioles |
| "Fight or flight" physiologic changes include all of the following except: a. increased conversion of glycogen to glucose. b.constriction of respiratory airways. c. increased perspiration. d. dilation of blood vessels in skeletal muscles | b.constriction of respiratory airways |
| Dendrites and cell bodies of sympathetic preganglionic neurons are located in the: | c. gray matter of the thoracic and upper lumbar segments of the spinal cord |
| Which of the following is not correct? a. Sympathetic preganglionic neurons have their cell bodies located in the lateral grey column of vertain parts of spinal cord b. sympathetic preganglionic axons pass along the dorsal root of certain spinal nerves. | b. sympathetic preganglionic axons pass along the dorsal root of certain spinal nerves. |
| Another name for the parasympathetic nervous system is: | b. craniosacral |
| Which statement is not correct? c. Separate autonomic nerves distribute many sympathetic preganglionic axons to various internal organs d. Very few sympathetic preganglionic axon synapse with postganglionic neurons. | d. Very few sympathetic preganglionic axon synapse with postganglionic neurons |
| From superficial to deep, which is the correct order of location of the meninges? | a. dura mater, arachniod membrane, pia mater |
| The falx cerebri separates the: | c. two hemisheres of the cerebrum |
| The cerebrospinal fluid resides in the: | b. subarachnoid space |
| The layer of the meninges that serves as the inner periosteum of the cranial bones is the: | c. dura mater |
| Formation of the cerebrospinal fluid (CSF) occurs mainly in the: | c. choroid plexuses |
| The lateral ventricles are located within the: | a. cerebrum |
| CSF is absorbed into the venous blood via the: | d. arachnoid villus |
| CSF is not found in the: | d. subdural space |
| Which of the following is not a part of the brainstem? a. medulla oblangata. b. hypothalamus. c. pons. d. midbrain | b. hypothalamus |
| Which of the following is not a component of the midbrain? a. cerebral peduncles. b. corpora quadrigemina. c. superior colliculi. d. all of the above are parts of the midbrain | d. all of the above are parts of the midbrain |
| The internal white matter of the cerebellum is the: | a. abor vitae |
| The part of the brain that secretes releasing hormones is the: | b. hypothalamus |
| Regulation of the body's biological clock and production of melatonin is performed by the: | d. pineal body |
| The central sulcus divides the: | c. frontal lobe and parietal lobe |
| The part of the cerebrum integral to consciousness is: | b. the reticular activating system |
| The two cerebral hemispheres are connected by the: | a. corpus callosum |
| Emotions involve the functioning of the cerebrum's" | b. limbic system |
| The type of brain wave associated with deep sleep is: | a. delta |
| Which of the following is not a pathway that produces sensations of touch and presure? a. medial lemniscal system. b. spinothalamic pathway. c. rubrospinal tract | c. rubrospinal tract |
| Axons from the anterior gray horn of the spinal cord terminate in the: | c. skeletal muscle |
| Absence of reflexes is indicative of injury to: | a. lower motor neurons |
| The portion of the brain stem that joins the spinal cord to the brain is the: | e. medulla |
| Which one of the following is not a funciton of the brain stem? c. controls heartbeat, respiration, and blood vessel diameter. d. contains centers for speech and memory | d. contains centers for speech and memory |
| Which one of the following is not part of the diencephalon? a. cerebrum. b. thalamus. c. hypothalamus. d. pineal gland | a. cerebrum |
| Which one of the following parts of the brain helps in the association of sensations with emotions, as well as aiding in the arousal or alerting mechanism? a. pons. b. hypothalamus. c. cerebellum. d. thalamus. e. none of the above is correct | e. none of the above is correct |
| Which one of the following is not a function of the cerebrum? a. language. b. consciousness. c. memory. d. consciousness awareness of sensations. e. all of the above are functions of the cerebrum | e. all of the above are functions of the cerebrum |
| The area of the cerebrum responsible for the perception of sound lies in the _____ lobe. | b. temporal |
| Visual perception is located in the _____ lobe. | c. occipital lobe |
| Which one of the following is not a function of the cerebellum? | d. associates sensations with emotions |
| The largest section of the brain is the: | c. cerebrum |
| Which statement is false? c. The cardiac, vasomotor, and respiratory control centers are called the "vital centers". d. The meninges end at L1 in a tapered cone called the cauda equina | d. The meninges end at L1 in a tapered cone called the cauda equina |
| Which of the following is not a function of the hypothalamus? | c. plays an essential role in maintaining the waking state |
| Which of the following is/are classified as nerve fibers? a. axon. b. dendrites. c. both a and b. d. none of the above | c. both a and b (both axon and dendrites) |
| Which of the following conduct impulses towards the cell body? | a. axons |
| A neuron with one axon and several dendrites is a: | a. multipolar neuron |
| Which type of neuron lies entirely within the CNS? | c. interneuron |
| Which sequence best represents the course of an impulse over a reflex arc? | d. receptor, sensory neuron, interneuron, motor neuron, effector |
| A complete nerve, consisting of numerous fascicles and their blood supply, is held together by a fibrous coat called the: a. endoneurium. b. perineurium. c. epineurium. d. fascicles | ? |
| Small, distinct regions of grey matter within the CNS are usually called: | b. nuclei |
| Nerve that contain mostly efferent fibers are called: | b. motor nerves |
| Grey matter in the CNS consists of: | d. cell bodies |
| Most nerves in the human nervous system are: | a. sensory nerves |
| Compared with the inside of the cell, the outside of most cell membranes is: | a. positive |
| The difference in electrical charge across a plasma membrane is called: | a. depolarization |
| A neuron's resting membrane potential is: | b. -70 mV |
| Which of the following statements is true concerning the sodium-potassium pump? | a. Three sodium ions are pumped out of the neuron for every two potassium ions pumped into the neuron. |
| During a relative refractory period: | b. an action potential is possible only in response to a very strong stimuli |
| Voltage-gated channels are: | b. membrane channels that open in response to voltage fluctuations |
| When current leaps across an insulating myelin sheath from node of Ranvier to node of Tanvier, the type of impulse conduction is: | c. saltatory conduction |
| The larger the diameter of a nerve fiber: | b. the faster the speed of conduction |
| Which of the following structures is not a main component of a chemical synapse? a. synaptic knob. b. synaptic cleft. c. synaptic process. d. plasma membrane of postsynaptic neuron | c. synaptic process |
| A synaptic knob is located on the: | b. axon |
| Which of the following is true of spatial summation? | a. Neurotransmitters released simltaneously from several presynaptic knobs converge on one postsynaptic neuron |
| Neurotransmitters are released in a synapse and bind to: | d. receptors on the postsynaptic terminal |
| The main chemical classes of neurotransmitters include all of the following except: a. acetylcholine. b. norepinepherine. c. amino acids. d. amines | b. norepinephrine |
| Which of the following is not an example of an amine neurotransmitter? a. serotonin. b. histamine. c. glycine. d. dopamine | c. glycine |
| Severe depression can be caused by a deficit in which of the following neurotransmitters? | c. amines |
| Which of the following in not a catecholamine? a. epinepherine. b. norepinephrine. c. dopamine. d. serotonin | d. serotonin |
Created by:
Emaan