b. 2. sensory neuron. What statement is true regarding reflexes? There are three main types of neuron: sensory, motor and relay. The ventral root of the spinal nerve will contain motor fibers (axons) that innervate the skeletal muscles B. A) prevents a muscle from overstretching. B) The knee jerk reflex is an example of a superficial reflex. D) usually depends on cranial neurons. B. Dermatomes overlap at their edges by as much as 50%. b. it occurs in response to painful stimuli. C) moves a limb away from a painful stimulus. A. Thermoreceptor B. Nociceptor C. Chemoreceptor D. Mechanorececptor Question 6 What statement is false regarding . E) is an example of a monosynaptic reflex. Examples of monosynaptic reflex arcs in humans include the patellar reflex and the Achilles reflex. a.) . In a reflex arc, the _____ transmits afferent impulses to the CNS. (a) Both A and R are true and R is the correct explanation of A. 2) Flexor muscles withdraw the stimulated limb. The stretch reflex is a protective measure for the muscles, designed to prevent what? Impulses are carried to the spinal cord or brain by sensory neurons. The Jendrassik maneuver decreases the patellar reflex output by inhibiting descending tract input to the spinal reflex arc. (iii) Motor neurons carry signals from receptors to the spinal cord. a. Afferent fibres enter the spinal cord through the ventral root. Some simple reflexes have only sensory and motor neurons. a. stretch reflex. A reflex arc consists of the following components. The knee jerk reflex is an example of a stretch reflex . True or False: The white matter of the spinal cord is surrounded by its grey matter. The autonomic and somatic nervous systems are two separate systems that work totally independent of each other and lack any functional overlap. The knee jerk reflex is an example of a stretch reflex. Reflexes, or reflex actions, are involuntary, almost instantaneous movements in response to a specific stimulus. A) integration center B) sensory neuron C) receptor The first step in a reflex arc is stim- ulation of a. the motor neuron. C. Incoming impulses are usually processed in the hypothalamus. visceral reflex arcs are always processed within the CNS True or false? CSF can be found in the subarachnoid space. Reflex arcs are evolved for functioning in the absence of true thought processes. E. Reason: Reflex Arc works in case of those animals who donot have thinking process. A reflex action is an automatic . **crossed extensor reflex d. crossed extensor reflex 79. Dendrite Cell Body Interneuron Gray matter Sensory neuron axon Synapse White matter Spinal nerve Motor neuron axon 3 2 From receptor 8. Press F11. (ii). False Question 36 What statement is true regarding reflexes? What statement is true regarding reflexes? Neurons are found in both the central and peripheral nervous systems The axon of the neuron contains the nucleus All neurons have myelin sheaths Dendrites. Anatomy and Physiology. c. the sensory . The knee jerk reflex is an example of a stretch reflex . Answers: A. 28. Which statement is true regarding neurons? (C) Some of its pathways are referred to as reflex arcs. Reflex arcs that contain only two neurons, a sensory and a motor neuron, are considered monosynaptic. False statement regarding the Tendon Reflex. d. They are in response to a specific stimulus. 5 . The dorsal and ventral roots at each level of the spinal cord join to . What statement is false regarding the sympathetic nervous system? 31. These nuclei are located in the lateral horns and innervate smooth muscle, cardiac muscle, and glands. Which statement about a visceral reflex arc is FALSE? Which statement regarding reflex arcs is FALSE? Which of the following statements about the meninges is FALSE? Reflex arcs are efficient quick responses. The sensory neuron activates an inhibitory interneuron that synapses with a motor neuron. c.) The inhibitory neurotransmitter inhibits the motor neuron, which then generates fewer nerve impulses. Spinal reflexes originate from the spine and bypass the brain entirely. (B) Its pathways are usually voluntary. Reflex Arc Using the terms provided, label the following illustration of a reflex arc. The entire process of involuntary response to a peripheral nervous stimulation is called reflex action. C) The flexor reflex is initiated by painful stimuli. These different types of neurons work together in a reflex action. autonomic motor nuclei. 6) The dorsal root of a spinal nerve contains. Sudden jerky withdrawal of hand or leg when . The reflex arc consists of 5 components: 1. sensory receptor. (c) A is true but R is false. All of the above are true statements regarding a visceral reflex arc. tearing flexion reflex involves several synaptic links 1) Stimulation of pain sensory neurons stimulates flexor muscles. 4. motor neuron. Withdrawal reflexes are lost following cervical section of the spinal cord. Reflex arc Reflex actions. Reflex arcs A) are capable of receiving a stimulus and yielding a response B) are the basic structural units of the nervous system C) occur primarily in the cerebral cortex of the brain D) involve inhibitory neurons E) do not involve the spinal cord Select menu option View > Enter Fullscreen. Visceral reflex arcs are always processed within the CNS. 30. (D) Its pathways always involve more than two neurons. A The Babinski's test is testing a specific reflex of the lower motor neurons The deep tendon reflex is commonly initiated with a reflex hammer in a neurological examination B The sensory neuron of a reflex arc transmit efferent impulses to the spinal cord Neural integration (processing) of all reflexes occurs in the brain Question 47 1 Point Damage . The pia mater is firmly bound to the neural tissue of the spinal cord and brain. Withdrawal reflexes are lost following cervical section of the spinal cord. a. it is a polysynaptic reflex. Which is not true with respect to the Withdrawal reflex? A. c. They are planned. The examination reveals a weakness (hemiplegia) and a loss of vibratory sensation and discriminative touch all on the left lower extremity, and a loss of pain and thermal sensations on the right lower extremity. Which of the following is a monosynaptic reflex? (A) Its pathways innervate skeletal muscle. Each spinal nerve is associated with a specific dermatome C. All 31 spinal nerves contain thousands of individual nerve fibers (axons) carrying information to and from the spinal cord D. Spinal nerves only innervate the skin . The other option is to use this sensory information to initiate a pre-programmed reflex. This problem has been solved! (iii). c. the crossed extensor response is extension of the ipsilateral limb in response . What statement is true regarding reflexes? What statement is true regarding reflexes? C. arc BE = 180° -32° = 148° The sensory neuron of a reflex arc transmit efferent impulses to the spinal cord. Analog to digital conversion Step 1 in data acquisition The raw input is usually in the form of an analog voltage (± 10 V). The ventral root of the spinal nerve will contain motor fibers (axons) that innervate the skeletal muscles. Answers: A. Neural integration (processing) of all reflexes occurs in the brain B. B. Reflexes are fast, predictable and automatic. We know BD is a diameter, so arc BD measures 180°. . Class 11 >> Biology >> Neural Control and Coordination >> Reflex Action Prepares the body for "fight or flight" activities/responses B. The reflex arc is a pathway along which the information about the stimulus is carried to the spinal cord and the information regarding the response is carried to the effector organ. Transcribed Image Text. False. A visceral reflex arc must contain a receptor. A reflex action, also known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus. What statement is true regarding reflexes? A visceral reflex arc must contain a receptor. Reflex arcs are a neural pathway that controls reflex actions. the entire upper limb) to a specific spinal nerve. The sensory neuron of a reflex arc will transmit efferent impulses to the spinal cord C. The Babinski's test is testing a specific reflex of the upper motor neurons D. The primary components of the reflex arc are the sensory neurons (or receptors) that receive stimulation and in turn connect to other nerve cells that activate muscle cells (or effectors), which perform the reflex action. A. Which statement is true about lymph nodes? reflex arc, neurological and sensory mechanism that controls a reflex, an immediate response to a particular stimulus. View Notes - Anatomy Final CH3.docx from BSC 2346 at Rasmussen College. Raw input - analog 2. 44. Reflex arcs that contain only two neurons, a sensory and a motor neuron, are considered monosynaptic. The simplest arrangement of a reflex arc consists of . B. Fatty acids and glycerides are absorbed across the epithelial membranes of the villi bydiffusion. (i) Sudden action in response to something in the environment is called as a reflex action. Visceral reflex arcs are always processed within the CNS. c. brain stem reflexes. The sensory neuron of a reflex arc transmit efferent impulses to the spinal cord The deep tendon reflex is commonly initiated with a reflex hammer in a neurological examination Neural integration (processing) of all reflexes occurs in the brain D) The Babinski's test is testing a specific reflex of the . A 41-year-old man is brought to the emergency department after an accident at a construction site. C. Polysynaptic reflexes are faster than monosynaptic reflexes. C) moves a limb away from a painful stimulus. . What statement is true regarding reflexes? reflexes . to the painful stimulus. REFLEXES AND REACTIONS QUIZ C __1. The statement of the Assertion is false but the Reason is true. Reflex arcs A) are capable of receiving a stimulus and yielding a response B) are the basic structural units of the nervous system C) occur primarily in the cerebral cortex of the brain D) involve inhibitory neurons E) do not involve the spinal cord It is convenient to start by finding the measures of the arcs around the circle. The sensory neuron of a reflex arc transmit efferent impulses to the spinal cord The deep tendon reflex is commonly initiated with a reflex hammer in a neurological examination Neural integration (processing) of all reflexes occurs in the brain D) The Babinski's test is testing a specific reflex of the lower motor neurons Question 2 Wolff's law of . A reflex arc may not involve a signal passing through the brain. View Notes - Anatomy Final CH3.docx from BSC 2346 at Rasmussen College. C. All 31 spinal nerves contain thousands of individual nerve fibers (axons) carrying information to and from the spinal cord. A monosynaptic reflex arc involves one or more interneurons b. All visceral reflex arcs are polysynaptic. Consider the steps of a reflex arc. (i). Receptor. Assertion: Reflex Arc works faster than thinking process of brain. d. Lymphatic sinuses are located in the cortex of a lymph node only. A. 3. integration center. D) Stretch reflexes are hyperactive in comatose patients. The sensory neuron of a reflex arc transmit afferent impulses to the spinal cord Question 8 Which major nerve is associated or represents the largest and thickest nerve in the body and almost innervates the entire lower limb? 3) Antagonistic muscles in the same limb are inhibited. The Babinski's test is testing a specific reflex of the upper motor neurons Damage If you have any query regarding CBSE Class 10 Science Chapter 7 Control and Coordination Multiple Choice . Which step follows information processing? Step 2 in data acquisition The Babinski's test is testing a specific reflex of the upper motor neurons Damage Furthermore, what are some examples of reflexes? Sample Question. C) The flexor reflex is initiated by painful stimuli. There are three main types of neuron: sensory, motor and relay. Interneurons in the spinal cord relay information from sensory neurons to motor neurons. 6. Which statement about a visceral reflex arc is FALSE? Answers: Neural integration (processing) of all reflexes occurs in the brain. D. Reflexes may involve skeletal muscles, smooth muscles, the heart and glands. The medulla of a lymph node contains lymphatic nodules. A reflex action is an automatic . (iv) The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc. c. Interneurons are the final common path for all reflexesd. Each spinal nerve is associated with a specific dermatome. b. the effector organ. A monosynaptic reflex arc involves one or more interneurons b. Which statement is false regarding nutrient absorption in the small intestines? Which of the following statements is correct about reflex arc? a. Cancerous lymph nodes are swollen and tender to the touch. arc BC = (2/3)(180°) = 120° arc CD = (1/3)(180°) = 60° Arc BE is the supplement to arc ED, so is . d. they are prepotent. 30. Impulses are carried to the effector via motor neurons. All of the above are true statements regarding a visceral reflex arc. Reflexes, or reflex actions, are involuntary, almost instantaneous movements in response to a specific stimulus. . c. Interneurons are the final common path for all reflexesd. The conduction pathway of a reflex arc is: receptor, sensory neuron, integrating center, motor neuron, effector. (select all that are not true of a reflex arc) Action potentials in a reflex arc happen more quickly than action potentials in other nervous system pathways. Which of the following statements concerning the somatic division of the peripheral nervous system is INCORRECT? The nerve pathway followed by a reflex action is called . b. withdrawal reflex. Choose the incorrect statement regarding the Golgi tendon organ. Q&A. A few examples of reflex action are: When light acts as a stimulus, the pupil of the eye changes in size. The knee jerk reflex is an example of a stretch reflex. c. Lymph enters the lymph node through afferent lymphatic vessels. Examples of monosynaptic reflex arcs in humans include the patellar reflex and the Achilles reflex. B) sympathetic stimulation. True. It is the first component of the reflex arc. They are a motor response. Reflex arc Reflex actions. B. b.) Albuterol (Ventolin) binds to β2 receptors and is used by asthma patients to dilate the bronchioles of the lungs and ease breathing. (ii) Sensory neurons carry signals from the spinal cord to muscles. b. The (ii) statement is false as sensory neurons carry signals from receptors to spinal cord. C. Dermatomes are not used to assess spinal nerve damage. Answers: A. (iv) The path through which signals are transmitted from a receptor to a muscle or a gland is called as reflex arc. Each dermatome provides sensory input from a broad area of the skin (e.g. Which statement concerning the spinal cord is NOT correct? True or False? Nervous System Solutions. (b) Both A and R are true but R is not the correct explanation of A. That is, the signal has amplitude that varies continuously over time. Which of the following statements is true regarding dermatomes? A reflex is an unlearned, rapid, involuntary and predictable response. non-invasive blood pressure Steps in data acquisition 1. These different types of neurons work together in a reflex action. Answers: Rod and cone cells are the only two types of gustatory cells Sensory hair cells of the olfactory bulb bind molecules within the nose that ultimately allow for the sense of smell The cochlea within the inner ear allows for the sense of equilibrium The pupil is responsible for refracting incoming light Question 2 27. Answers: A. Point C divides it into parts with the ratio 2:1, so . To skeletal muscle effector 5 Spinal cord 6. The postganglionic fibers are all very short in length when compared to the postganglionic fibers of the parasympathetic nervous system C. Nervous System I (Exam 1) Review (SP22) No teams 1 team 2 teams 3 teams 4 teams 5 teams 6 teams 7 teams 8 teams 9 teams 10 teams Custom. b . A reflex arc is a neural pathway involved in a reflex. A reflex arc is a neural pathway that controls reflex action. D. The sensory neuron of a reflex arc transmit afferent impulses to the spinal cord Question 8 Which major nerve is associated or represents the largest and thickest nerve in the body and almost innervates the entire lower limb? All visceral reflex arcs are polysynaptic. Signal conditioning 3. A. Monosaccharides and amino acids are absorbed into capillaries through the epithelium of the villi by facilitated diffusion. Q&A. The Babinski's test is testing a specific reflex of the lower motor neurons b . They are involuntary. 2. Nerve impulse reaches the spinal cord by motor neuron. What does NIBP stand for? Question: Which of the following statements about the reflex arc is false? It follows this general sequence and does not involve the brain: stimulus → receptor → sensory neurone → relay neurone → motor neurone → effector → response. Reflex arcs are relatively slow in comparison to other nervous system functions. See the answer This is called the patellar reflex and is an example of a spinal reflex. Reflex arc is formed by (a) muscle → brain → receptor (b) muscle → spinal cord → receptor . d.) Assertion: Reflex Arc works faster than thinking process of brain. . Which of the following statements regarding reflexes is NOT true? B. <br> (B)Information regarding . Question: Which of the following statements about a reflex arc isſare) false? B) prevents a muscle from generating damaging tension. Answers: A. Sacral nerve B. Ulnar nerve C. Axillary nerve D. Sciatic nerve Question 9 In sum, there are _____ pairs of spinal nerves. (d) A is false but R is true.