The impulse over a motor neuron will lead to
a. an interneuron.
b. the spinal cord.
c. a receptor.
d. an effector.
Introduction: Motor control can be defined as the systematic control of movement in organisms which contain a nervous system. The primary motor cortex (M1) is the main area of the brain that is involved in the motor function. M1 is present in the frontal lobe of the brain.
Answer to Problem 1PL
Correct answer:
The correct answer is the option (d). Effector.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d). Effector. A motor neuron cell body is present in the motor cortex, brainstem or the spinal cord. Its axon or fiber projects to the spinal cord or its outside. A motor neuron can directly or indirectly control the effector organs, chiefly the glands and muscles. A nerve cell is (motor neuron) which transmits the impulses from the central nervous system to effectors in order to cause a physiological response to the modifications in the environment. Hence, the option (d) is correct.
Explanation for the incorrect answer:
Option (a) An interneuron. It is a neuron that transmits the impulses between other neurons, particularly as a part of a reflex arc. Hence, the option (a) is incorrect.
Option (b) The spinal cord. The spinal cord can be defined as the cylindrical bundle of the nerve fibers and connected tissue. It is surrounded in the spinal region and joins approximately all the body parts to the brain. It forms the central nervous system with the brain. Hence, the option (b) is incorrect.
Option (c) A receptor. A receptor is a protein that binds to a definite molecule known as ligand. A ligand might be a molecule such as hormones, inorganic minerals, proteins, and neurotransmitters. The ligand bound to the ligand-binding spot on the receptor protein. Hence, the option (c) is incorrect.
A nerve cell is (motor neuron) which transmits the impulses from the central nervous system to effectors in order to cause a physiological response to the modifications in the environment. Hence, the option (d) is correct.
Want to see more full solutions like this?
Chapter 29 Solutions
Laboratory Manual For Human Anatomy & Physiology
- . Neurotransmitter substances are stored in vesicles located in specialized portions of thea. neuron cell body. c. dendrite.b. axon. d. postsynaptic membrane.arrow_forwardsurrounds a bundle of nerve fibers A. Neurium B. Perineurium C. Epineurium D. Endoneurium E. None of the abovearrow_forwardwhich of the following does not describe the somatic nervous system? A. motor neurons that innervate glands, cardiac and skeletal muscle B. a system of motor neurons that innervate all muscle cells c. voluntary nervous system d. general sensory for skin and joints.arrow_forward
- A structure or cell that collects sensory information is aa. motor neuron.b. receptor.c. neurolemmocyte.d. ganglion.arrow_forward28) Most motor neurons are a. unipolar.b. bipolar.c. multipolar. 29) Nonconducting cells in the nervous system area. neurons.b. white matter.c. glial cells.d. none of the above.arrow_forwardWhich of the following is not a part of the periphrial nervous system (PNS)? a.somatic nervous system b.autonomic nervous system c.sensory neurons d. motor neurons e. spinal cordarrow_forward
- Describe the passage of information through the nervous system using a specific example.Be sure to include in detail: A.The collection of stimuli at the sense organ and receptors involved as well as graded potential. B.The passing of the impulse along ascending pathways. C.Location in the brain that processes the information. D.Sending out motor information from brain. E.The passing of the impulse down descending pathways. F.Response by a skeletal muscle.arrow_forwardDescribe the passage of information through the nervous system using a specific example. Be sure to include in detail: A. The collection of stimuli at the sense organ and receptors involved as well as graded potential. B. The passing of the impulse along ascending pathways C. Location in the brain that processes the information D. Sending out motor information from brain E. The passing of the impulse down descending pathways F. Response by a skeletal musclearrow_forwardMost motor neurons are a. unipolar. b. bipolar. c. multipolar.arrow_forward
- A patient with poliomyelitis (which characterized by spinal cord damage) has disorder of skeletal muscles function. What neurons were destructed in this disorder? a. Pseudounipolar b. Pseudounipolar and associative (interneurons) c. Associative (interneurons) d. Motor neurons e. Interneurons and motorarrow_forwardAll of the following are true regarding the descending motor tracts EXCEPT which one? A. They originate in either the cerebral cortex or brainstem. B. The pathways are generally made of a two-neuron system. C. The upper motor neuron fibers target lower motor neurons of the spinal cord or cranial nerves. D. They are involved in assisting with voluntary movement.arrow_forwardThe subdivision of the brain that does not initiate somatic motor movements, but rather coordinates and fine-tunes those movements, is the a. medulla oblongata. b. cerebrum. c. cerebellum. d. diencephalon.arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education