Nervous System Questions and Answers

The lateral horns of the spinal cord contain O Fiber tracts of visceral sensory neurons O Cell bodies of somatic sensory neurons O Cell bodies of autonomic motor neurons O Cell bodies of somatic motor neurons

dentify the structures involved with cutaneous sensation Part A Drag the labels onto the diagram to identify the structures free nerve ending tactile corpuscle bulbous corpuscle hair follicle receptor lamellar corpuscle Reset

This one statement is true Somatic neurons are usually adrnergic Parasympathetic neuron fibers cause vasoconstriction Preganglionic neuron fibers are cholinergic Post ganglionic neuron fibers in the sympathetic nervous system are usuall cholinergic

Rods are sensitive to low levels of light due to their pigment rhodopsin What happens to rhodopsin in the dark O Rhodopsin dissociates during periods of dark Rhodopsin will detect blue wavelengths Retinal adopts the trans conformation and dissociates from opsin Vitamin A causes rhodopsin to desensitize Rhodopsin adopts the cis conformation and associates with opsin

What is the function of a gamma motor neuron O To stimulate the ends of the muscle spindle increasing their sensitivity to stretch O To stimulate skeletal muscle contraction O To terminate muscle contraction O To provide information about the tension put on a muscle To inhibit muscle contraction

Acetylcholine receptors gated channels are found on the muscle fibers cells c070b09 1 sarcoplasmic reticulum 2 sarcomere S transverse tubules T tubules 4 sarcolemma of skeleta

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

Identify C the fold here that is collapsed in this image but usually separates the left and right sides of this organ A B D

If the frequency of muscle stimulation is faster than 100 times per second and the waves of contraction are so close together that they fuse into one smooth wave it is called Unfused tetany Hyperplasia

What is the fluid called within the semicircular canals

Metabolic pathways are sequences of enzymatically catalyzed chemical reactions in a cell Metabolic pathways are determined by enzymes Substrates Enzyme 1 Intermediate Substrates HO NH Enzyme 2 D NH Enzyme 3 O HO HO H N H 5 DeMain COOH COOH

Question 12 1 point View the image of a peripheral nerve Letter A is pointing to a connective tissue called the c080b25 A

Which of the following best describes the effect of GABA on a post synaptic neuron GABA causes an action potential in a post synaptic neuron GABA causes a small depolarizing graded potential in a post synaptic neuron GABA causes a small inhibitory graded potential in a post synaptic neuron OGABA causes a large depolarizing graded potential in a post synaptic neuron

What travels along the sarcolemma and down the transverse tubules into the interior of the muscle An action potential O Calcium ions O Acetylcholine Motor units Troponin

This division of the nervous system is responsible for causing saliva production and increasing intestinal motility movement Parasympathetic Somatic motor Somatic sensory Sympathetic

Which of the following NOT paired correctly A Murmur sound produced when blood leaks back through an AV valve into the atria B Syncytium a mass of merging cells that act as a unit Systole contraction Myocardial infarction caused by a blood clot obstructing a coronary artery or one of its branches E Arrhythmias abnormal relaxation of heart muscle

Name any one molecule that could be detected by a chemoreceptor in the body

The is are located at the origin and insertion of skeletal muscle fibers within tendons and detect the amount of tension on a muscle to prevent excessive muscle contraction O extrafusal gamma neuron cross extensor myofibrils muscle spindle golgi tendon organs withdrawal reflex

Heart rate stinal motility Sensor spiration rate grative center Effectors Too low measures Blood pressure Not enough fluid in blood compares blood pressure to set point finds that blood pressure is 7 Effectors increase blood volume by increasing fluid content AND Increase blood flow by increasing Pearson Reset Help

The sensory impulse from hearing a sound is perceives in which lobe of the brain

hich statement below best describes why action potentials travel in only one direction The all or none principle explains this O They have a refractory period The diameter of the axon explains this Only sodium and potassium gated channels are found on the axon O They have myelinated avons

g the image below identify the given phase or process that is occurring and explain the ion movement occurring to duce the changes in membrane potential shown here Do this for the A range B range C range and D range A B C 30 0 55 70

Where is the motor end plate located O Throughout the axon of an alpha motor neuron At the axon terminal of the presynaptic cell O At the beginning of every motor unit O On the muscle membrane of the postsynaptic cell Within thick myosin filaments

Microglial cell Astrocyte Ependymal cells Neuron Schwann cells Satellite cells Oligodendrocyte SPO Alpacapa

Match the term in one column with the most appropriate definition description explanation in the opposite column thalamus hypothalamus midbrain arachnoid villi pons septum pellucidum corpus callosum Choose Choose a thin membrane separating the lateral ventricles a network of blood vesses lining the ventricles from which CSF is produced a stalk of axons connecting the hypothalamus to the pituitary gland structure responsible for reabsorbing CSF into venous blood four paired masses responisble for voluntary motor coordination motivation and decision making includes structures that regulate auditory and visual reflexes the largest tract of white matter connecting the two cerebral hemispheres the major relay center of the brain through which most incoming sensory information passes before continuing to the cerebral con the major regulator of homeostasis responsible for many activities of the autonomic nervous system contains the pontine respiratory group which controls the rate of breathing Choose Choose Choose

Place each of the following labels in the proper position on the curve where each of the indicated items would occur At threshold voltage gated Na channels open quickly Voltage regulated K channels open Nat arrive at the axon hillock and depolarize the membrane at that point 55 mV Potential across the membrane is becoming less negative Resting membrane potential 70 mV Hyperpolarization C A B D

are called Processes that carry nerve impulses away from the cell body dendrites axons synapses O myelin sheaths

What is a type of impairment A Alcohol and drug impairment B Mental and physical impairment C Impairment caused by sleepiness or draw D All of the above

Summation of subthreshold stimuli occurs becuase of the accumulation of depolarizing Cat Na Mg the cytoplasm of the axon hillock of a neuron

Choose all that are correct During the refractory period of an action potential 0 V gated Na channels V gated Cat channels V gated K channels Ligand gated K channels 0 are open

Which of the following voltages would most likely be measured during the relative refractory period O 30 mV 0 mV 45 mV 90 my

Which of the following is probably going to propagate an action potential fastest O a thin unmyelinated axon O a thin myelinated axon O a thick unmyelinated axon O a thick myelinated axon

arry parasympathetic impulses to the enteric nervous system Sympathetic NS innervation of the digestive tract is via fibers preganglionic

What does a ligand gated channel require in order to open increase in concentration of Nations Obinding of a neurotransmitter increase in concentration of K ions O depolarization of the membrane

Which of the following refers to signals from the brain stem that spread through the cerebral cortex to cause arousal waking up limbic system Reticular formation basal nuclei O Reticular activating system

B Peripheral vision C Pupillary reaction D Distance vision Question 14 ents During a health assessment how might the nurse quickly test the client s gross hearing ab

Stimulus Absolute actory period polarization vo refractory period Plateau Rapid olarization 30 mv 90 100 Time msec 200 300

A On the soft palate B On the tongue In the buccal cheek In the mucosal gutter under the tongue Question 6 What would the nurse test to determine if the uvula is normal A Perform the confrontation test B Have client say ah and see if it rises with phonation Check the gag reflex D Have client wiggle their tongue and see if the uvula alco win

Internal carotid Anterior cerebral Posterior cerebral Ophthalmic Middle cerebral Cerebellar J Pituitary gland

Which statement is true regarding action potentials nerve impulses A Neuroglia are solely responsible for creating action potentials B Is typically only generated in the dendrite portion of a neuron C An action potential moves from the axon to the soma of a neuron D When action potentials reach the axon terminal they cause the release of neurotransmitter

Which of the following are important ions in neurobiology that help create electric currents 1 2 3 4 2 Ca CI all the previous K

Opening of potassium channels in the axon membrane causes 1 depolarization 2 hyperpolarization 3 repolarization 4 increased negative charge inside the membrane

MICROSCOPE CONT Rotate noseplece Light Ocular lenses Coarse focus Fine focus Stage horizontal Which of the following best describes your observation of nervous tissue Large irregularly shaped cells with multiple thin cellular extensions surrounded by several smaller cells with circular nuclei Large irregularly shaped cells covered with multiple round cells on their surface Multiple round cells packed closely together forming a thick layer of cells Large irregularly shaped cells with a single cellular extension Submit PHASE 1 Focus m tissue Complete Click pow turn on lin Adjust lig Focus at Adjust oc Adjust the the field o Focus usin Put 10X ob Focus usine

The following structure is innervated by the sympathetic nervous system but NOT the parasympathetic nervous system heart stomach OOC Oblood vessels iris

Put the steps of signal transduction in order for a rod in the dark Hyperpolarization in the ganglion cell closes voltage gated Ca2 channels inhibiting neurotransmitter release CGMP gated channels are open allowing cations to enter the cell The photoreceptor depolarizes No action potentials occur along the optic nerve The neurotransmitter causes IPSPs in the bipolar cell which causes hyperpolarization Voltage gated Ca2 channels open in the synaptic terminals of the photoreceptor No EPSPs occur in the ganglion cell Neurotransmitter glutamate is continuously released

Which of the following is a response from the sympathetic division O Constricted pupils O Increased heart rate O Lower blood pressure O High gastrointestintal tract activity

Most nociceptors are tonic receptors True O False

The parasympathetic division has postganglionic fibers preganglionic fibers and postganglionic fibers The sympathetic division has preganglionic fibers and

Match the cranial nerve with its correct function Olfactory Optic Oculomotor Trochlear Trigeminal Abducens Facial Vestibulocochlear Glossopharyngeal Vagus Accessory Hypoglossal 4 A Provides motor function to part of the tongue for swallowing and conveys sensory impulses from the posterior part of the tongue B Sense of vision C Supplies motor functon for facial expression and conveys sensory impulses for the anterior 2 3 of the tongue D Supplies somatic motor fibers to the superior oblique muscle E Provides parasympathetic motor innervation to the heart lungs and abdominal viscera Transmits sensory impulses from the thoracic and abdominal viscera F Supplies motor fibers to the lateral rectus muscle G Motor fibers to four of the extrinsic eye muscles H Provides motor fibers to muscles of the tongue and controls tongue movements involved with manipulating food while chewing swallowing and speaking 1 Provide motor fibers to the trapezius and sternocleidomastoid muscles J Conveys sensory impulses from the face and supplies motor fibers to muscles for mastication K Sense of smell L Transmits impulses for the sense of equilibrium and hearing

uter ear pinna and ear canal describe s a region of the ear that include s the describe s a region of the ear that include s the describe s a region of the ear that include s the describe s a region of the ear that include s the middle ear describe s a region of the ear that include s the cochlea housing spiral organ oval window direct s sound waves In the air directly to the convert s sound waves into local vibrations and transmit s them to the transmit s vibrations to the inner ear at the change s the pressure of the fluid in the spiral shaped tympanic membrane contain s hair cells that convert mechanical energy into inner ear