Nervous System Questions and Answers

Opiates is a naturally occurring compound found in the______ plant. Poppy plant Cacao pods Peppermint Cinnamon

Depolarization of the sarcolemma means _________. the inside of the membrane has become less negative as sodium ions accumulate the outside of the membrane has become less negative as sodium ions accumulate the inside of the membrane has become more negative as sodium ions accumulate the sarcolemma has completely lost any electrical charge

According to the Nernst equation, if Na+ was the only ion to influence membrane potential, it would set the membrane potential at 0 mV -70 mV +30 mV -100 mV +500 mV

Which of the following axons would have the fastest rate of action potential propagation? Unmyelinated, 10 um diameter Myelinated, 10 um diameter Unmyelinated, 500 um diameter Myelinated, 500 um diameter Action potentials travel at the same rate in all axons

Conditions involving physical complaints or disabilities that occur in the absence of any physical pathology that could account for them are hypochondriacal disorders anxiety disorders dissociative disorders somatic symptom disorders

John sees Martha; the pupils of his eyes dilate. It is "love at first sight. What division(s) of the ANS is(are) involved? Select one: a. sympathetic division b. parasympathetic division c. somatic motor division d. neither sympathetic division nor parasympathetic division e. both sympathetic division and parasympathetic division

Efferent neurons of the Select one: a. somatic motor nerves innervate smooth muscle. b. ANS innervate skeletal muscle. c. somatic motor nerves connect skeletal muscles to the chain ganglia of the spinal cord. d. ANS utilize one neuron to connect the CNS to the effector organ. e. ANS utilize two neurons in series to connect the CNS to the effector.

Henry has a thrombus just beyond where the vertebral arteries join on the base of the pons. Which vessel is affected? Select one: a. dural sinuses b. basilar artery c. cranial artery d. None of the choices are correct.

Which of the following is true? Select one: a. Unmyelinated axons rest in invaginations of Schwann cells or oligodendrocytes.. b. Myelination will not influence the speed of conduction of action potentials. c.The myelin sheath inhibits the flow of electrical charges at nodes. d. The myelin sheath is a protein wrapping. e. The myelin sheath does not electrically insulate the axons from one another.

The pain a person experiences with acute appendicitis results from stimulating nerve endings called Select one: a. painreceptors. b. internoreceptors. c. visceroreceptors d. proprioceptors. e. appendoreceptors.

Which statement is true regarding the spinal nerve and cord? (A)Spinal nerves exit the spinal cord through the intervertebral foramen of the vertebrae (B) The dorsal root of the spinal nerves transmit (carry) information from the central nervous system out to the body (C)As a spinal nerve approaches the spinal cord, it separates into lateral and medial roots (D) A spinal nerve a single sensory axon and single motor axon

Justin has been arrested for stealing from a convenience store. His penalty is to complete 40 hours of community service at an animal shelter. Failure to complete this will result in jail time for him. After Justin completes the 40 hours of community service, he decides that he wants to continue it eventually helping at the same animal shelter for fun. Although his motivation was initially changed into a motivation when he decided to volunteer at the animal shelter. Intrinsic; extrinsic Extrinsic; intrinsic Intruistic; extruistic Extruistic; intruistic

What is the first step in T Cell activation? T cell activation. Antigenic fragments are displayed on the antigen presenting cell cell membrane, bound to proteins that are part of the major histocompatibility complex or human leukocyte antigens (HLA). When specific T cell encounters an APC displaying antigenic fragments bound to MHC proteins, it can now recognize antigen as foreign. Antigen presenting cell phagocytizes antigen then digests it.

Which of the following is not a plexus of the spinal nerves the choroid plexus the brachial plexus the lumbar plexus the cervical plexus the sacral plexus

Most body organs are innervated by: both divisions of the ANS the central nervous system (CNS) the parasympathetic division of the autonomic nervous system (ANS) the sympathetic division of the ANS

The cranial nerve with the greatest distribution is: the vagus nerve the accessory nerve the trigeminal nerve the abducens nerve

The sympathetic division of the ANS does not: dilate the bronchial tubes arise from the thoracolumbar levels summon energy during an emergency stimulate bile secretion from the gallbladder

You are observing a neurological exam. The patient has a positive pronator drift. This is a sign of ________. (A) Upper motor neuron dysfunction (B) Pituitary dysfunction (C)Cranial nerve dysfunction (D)Lumbar snine injury

If someone spills very hot coffee (200 °F) on their skin, they will likely perceive much pain. Which of the following receptor types is causing this sensation? chemoreceptors thermoreceptors nociceptors mechanoreceptors

Match each of the following components of a reflex arc with its description. Drag the terms on the left to the appropriate blanks on the right to complete the sentences. transmits message to the Receptor: effector receives the stimulus Effector: transmits message to the Motor neuron: CNS nerve impulse is processed Sensory neuron: carries out the motor Integration center: response

What connective tissue sheath wraps the axon of a neuron? fascicle endoneurium perineurium epineurium

After acetylcholine crosses the synaptic cleft and binds to the acetylcholine receptor, what is the very next step that occurs at the neuromuscular junction that leads to depolarization? Sodium pumps in the sarcolemma switch on and sodium rushes into the muscle cell, causing the interior of the sarcolemma to go from positive to negative Sodium channels in the sarcolemma open and sodium rushes into the muscle cell, causing the interior of the sarcolemma to go from negative to positive Calcium channels in the sarcolemma open up and calcium rushes into the muscle cell, causing the interior of the sarcolemma to go from negative to positive Calcium is released by the sarcoplasmic reticulum, calcium binds to troponin and the muscle contracts

This part of the central nervous system contains cell bodies of neurons that are responsible for motor control of visceral organs such as the heart, lungs, digestive organs etcetera. Ventral horns of the spinal cord Lateral horns of the spinal cord Primary motor cortex of the cerebrum Dorsal horns of the spinal cord

You reach into your book bag and feel around for your cell phone. You are using this specific part of the nervous system: Thalamus Dorsal column medial lemniscus pathway Sympathetic nervous system Anterolateral pathway

Which statement is true regarding the neuron synapse? (A) The presynaptic and postsynaptic neuron membranes are not physically separated (B) Binding of a neurotransmitter on the postsynaptic neuron membrane can generate an action potential in that neuron (C)The human body only uses one type of neurotransmitter in all of its synapses (D)The binding of a neurotransmitter always causes an excitatory effect on that cell, never inhibitory

The autonomic nervous system is responsible for which functions? The cell bodies of the preganglionic neurons of the sympathetic division are located within: Which pair of actions describes the effect of the sympathetic division of the ANS on the pupil of the eye and the G.I. tract? The sympathetic division of the ANS does not: Most body organs are innovated by: Which of the following is not a function of the ANS? A ganglion is an aggregate of nerve cell bodies in: A cranial nerve that affects eye movement is:

Which level of government is primarily responsible for carrying out elections? Federal government State and local government

Vitreous humor helps to hold the lens and retina in place. is located in the anterior chamber. is produced on a daily basis. is less viscous than aqueous humor. does not contribute to intraocular pressure.

People with body dysmorphic disorder overemphasize and show tremendous attention to information relating to attractiveness underemphasize and show little attention to information relating to attractiveness underemphasize and show little attention to information relating to height overemphasize and show tremendous attention to information relating to height

The spinal cord Select one: a. controls the reticular activating system. b. stores reflexive memory. c. forms memory engrams. d. links the peripheral nervous system to the brain. e. is characterized by conscious activity.

The relationship between energy and wavelength is: A. The amount of energy is directly proportional to the wavelength. B. The amount of energy is the same to the wavelength. C. The amount of energy is inversely proportional to the wavelength. D. Both b and c.

ich of the following neuronal components helps to insure a speedy nerve impulse transmission? Axon Cytoplasm Myelin sheath Nucleus

Paul cannot stop thinking about dressing in women's clothes, and a couple of times a week he does put on his wife's clothing. It has caused him a great deal of unhappiness, and he and his wife have terrible fights about his taking her clothing. The most appropriate DSM-5 diagnosis would be Multiple Choice transvestism. transvestic fetishism. transsexualism. transvestic disorder.

Part A You conduct a two point threshold experiment and interpret the results. Body Part A has a two point threshold of 8 mm. (Can detect 2 points if they are apart by 8 mm or more). Body Part B has a two point threshold of 6 mm. (Can detect 2 points if they are apart by 6 mm or more). Which body part has the higher density of touch receptors? Body Part A Body Part B Submit Part B Request Answer If you repeated the test with Body Part A and touched it with two pins that were 6 mm apart, what would be the expected result? You would detect two pins The two pins would feel like one pin Submit Request Answer

In this disease the basal nuclei in the brain get overactive due to the destruction of DOPAmine producing brain cells. It results in difficulty with motor control and speech. Multiple sclerosis Huntington's disease Epilepsy Parkinson's disease

Which statement is true regarding neurons? (A) Motor (efferent) neurons transmit information from one muscle to another muscle (B) Sensory (afferent) and Motor (efferent) neurons are considered part of the peripheral nervous system C) Sensory (afferent) neurons transmit information from the brain to muscles DInterneurons are found in both the central and peripheral nervous system

Which of the following is the best example of peer pressure using a reasoning tactic? A."Have a cigarette. Everyone in this group smokes." B."C'mon and take a sip. Don't be a bore." C."Act like your sister. She smoked pot and never got caught."

Which of the following disorders is typically characterized by feelings of anxiety and helplessness that are caused by a traumatic event? 1) acute stress disorder 2)dissociative identity disorder 3)bipolar disorder 4)somatoform disorder

You are playing nerdy "20 questions" on a long road trip and your friend says "I am thinking of the neurotransmitter associated with sex and drugs and other sorts of rewarding things". What neurotransmitter are they probably thinking of? a)acetylcholine b) dopamine c)GABA d)epinephrine

Which of the following statements about cerebrospinal fluid (CSF) is false? A). It provides a liquid cushion that helps protect the spinal cord and the brain. B). CSF does not circulate through the spinal cord. C).CSF circulates through the ventricles of the brain. D).CSF is made by choroid plexus. E). It removes wastes, such as those that are made by neurons.

If you bred a line of designer rats lacking vmPFCs, which of these do you think would be impaired/absent/different in these animals? a) a conditioned emotional response becoming extinct (no longer being afraid of bell) b)a fear response (freezing) being displayed c)motor responses d) a conditioned emotional response being learned (pairing of bell & shock)

Electrically stimulating the "hand area" in primary motor cortex causes what? a)one contraction of one muscle of one of the hands b)one movement of the contralateral hand c)one contraction of one muscle fiber of one of the hands d)one movement of the ipsilateral hand

What principle of how the auditory system is organized is the reason cochlear implants work? a)number of axons coding intensity information b)place coding of pitch information c)rate coding of intensity information d)rate coding of pitch information

After losing input from a body part that is damaged or amputated, touching other body parts might stimulate perception of touch from the missing area. This is most likely due to: A) loss of neurotrophins. B) collateral sprouting in motor pathways. C) reorganization of blood supply. D) collateral sprouting in somatosensory pathways.

Lucas is able to understand what relatives say to him. However, he cannot pronounce words clearly or speak fluently. His stroke most likely occurred in the A). left cerebellar hemisphere B). Wernicke's area C). Broca's area D). pons E). basal ganglia

Which of these is not a function of sleep? a)consolidation of non-declarative memories b)allowing all your neurons to completely stop firing so the brain can rest c)"housekeeping" or clearing waste products from your brain d)consolidation of declarative memories

All of the following statements about the classification of neurons is true except for: A). Bipolar neurons have two neuron processes. B). The retina of the eye contains bipolar neurons. C). The least abundant type of neuron in the body is the multipolar neuron. D). Unipolar neurons are found mainly in the peripheral nervous system. E.) A multipolar neuron contains more than two neuron processes.

Sensory input from the skin would follow the A). sympathetic nerve pathway. B). descending tracts of the spinal cord. C). ventral root of spinal nerves to the spinal cord. D). dorsal root of spinal nerves to the spinal cord. E). pathway of autonomic neurons.

Which of the following statements is false? A). Acromegaly can result in enlargement of hands, feet, and/or facial features. B). Acromegaly is due to the abnormal secretion of growth hormone in adults. C). Hypersecretion of growth hormone during childhood causes gigantism. D). In proportionate dwarfism, some parts of the body are small while other parts of the body are average or above average in size. E). Dwarfism can be treated by injections of synthetic growth hormone during childhood.

If a neurologist gives you a test similar to what happens during a suspected DUI (checking for balance, having you walk in a straight line, etc), which part of the nervous system do they suspect you might have problems with? a) cerebellum b)basal ganglia c)reticular formation d)spinal cord