BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 45, Problem 5U
Motor neurons stimulate muscle contraction via the release of
a. Ca2+.
b. ATP.
c. acetylcholine.
d. hormones.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The neurotransmitter that initiates events leading to skeletal muscle contraction is A. creatine kinase. B. creatinine. C. norepinephrine. D. acetylcholine
A bacterial toxin is known to block the release of ACh at the motor end plate of skeletal muscle. Consequently, a. the skeletal muscle contracts with increasing force. b. the skeletal muscle contracts with increasing frequency. c. the ability to stimulate the muscle is impaired. d. other neurotransmitters would stimulate the muscle.
The contractile response in skeletal muscle
A. produces more work when the muscle contracts isometrically than the muscle contracts isotonically.
B. does not last as long as the action potential.
C. produces more tension when the muscle contracts isometrically than when the muscle contracts isotonically.
D. starts after the action potential is over.
E. decreases in magnitude with repeated stimulation.
Chapter 45 Solutions
BIOLOGY
Ch. 45.1 - Compare hydrostatic skeletons, exoskeletons, and...Ch. 45.1 - Explain how animals with hydrostatic skeletons...Ch. 45.2 - Prob. 1LOCh. 45.2 - Prob. 2LOCh. 45.2 - Prob. 3LOCh. 45.3 - Prob. 1LOCh. 45.4 - Prob. 1LOCh. 45.4 - Prob. 2LOCh. 45.4 - Prob. 3LOCh. 45.5 - Prob. 1LO
Ch. 45.5 - Describe how friction and gravity affect...Ch. 45.5 - Prob. 3LOCh. 45 - Prob. 1IQCh. 45 - Exoskeletons and endoskeletons differ in that a....Ch. 45 - Worms use a hydrostatic skeleton to generate...Ch. 45 - Bone develops by one of two mechanisms depending...Ch. 45 - Which of the following statements best describes...Ch. 45 - Motor neurons stimulate muscle contraction via the...Ch. 45 - Prob. 6UCh. 45 - If you wanted to study the use of ATP during a...Ch. 45 - Place the following events in the correct order....Ch. 45 - You take X-rays of two individuals. Ray has been a...Ch. 45 - You have identified a calcium storage disease in...Ch. 45 - How do the muscles move your hand through space?...Ch. 45 - How can osteocytes remain alive within bone? a....Ch. 45 - Swimming underwater using forelimbs for propulsion...Ch. 45 - If a drug inhibits the release of ACh, what will...Ch. 45 - Prob. 1SCh. 45 - Prob. 2SCh. 45 - The nerve gas methylphosphonofluoridic acid...Ch. 45 - If natural selection favors the evolution of wings...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The cross bridges of the sarcomere in skeletal muscle are made up of A. myelin. B. tropomyosin. C. myosin. D. actin. E. myoglobulin. F. troponin.arrow_forwardThe action potential of skeletal muscle A. is not essential for contraction. B. is longer than the action potential of cardiac muscle. C. has a prolonged plateau phase. D. causes the immediate uptake of calcium ions into the lateral sacs of the sarcoplasmic reticulum. E. spreads inward to all parts of the muscle via the T tubules.arrow_forwardThe muscle relaxes if no new nerve signal arrives. However the neurotransmitter from the previous stimulation is still present in the synapse. The activity of ________ helps to remove this neurotransmitter. a. myosin b. action potential c. tropomyosin d. acetylcholinesterasearrow_forward
- The fast fatigable motor units are used predominantly for which of the following activities? a. The action potentials fired by alpha motor neurons become slower. b. Slow twitch muscle fibers show increased myosin ATPase. c. Fast fatigable motor units are recruited before slow twitch motor units. d. None of the answers. e.All of the answers.arrow_forwardWhich of the following sentences is NOT correct? A. White fibers make up fast-twitch muscle B. Muscle spindle is a type of receptor that detects muscle length C. Exocrine gland secretes its product directly into the bloodstream D. When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stimulated to contractarrow_forwardWhich of these statements concerning aging and skeletal muscle iscorrect?a. A loss of muscle fibers occurs with aging.b. Slow-twitch muscle fibers decrease in number faster than fast-twitchmuscle fibers.c. The loss of strength and speed is due mainly to loss of neuromuscular junctions.d. The density of capillaries in skeletal muscle increases.e. The number of motor neurons remains constant.arrow_forward
- Muscle tone is: a. the result of voluntary shortening of the muscle. b. the result of a small amount of involuntary activation of motor units by the nervous system. c. abnormal—a person’s muscles should be relaxed normally. d. present only where there is damage to the nervous system.arrow_forwardWhen a higher voltage is applied to the skeletal muscle, the force of contraction _____ and recruitment of more motor units occurs called ________ summation. A. increases, spatial B. increases, temporal C. decreases, temporal D. decreases, spatialarrow_forwardThe series-elastic component of muscle contraction is responsible for a.increased muscle shortening to successive twitches. b.a time delay between contraction and shortening. c.the lengthening of muscle after contraction has ceased. d.all of these.arrow_forward
- While initial control of skeletal muscles occurs with the motor cortex, a successful movement also requires efferent feedback from joint, tendon and other proprio- ception sensors. Ultimately, complete control and coordination of motor movements requires the operation of: a. The cerebellum b. The hippocampus c. The vestibular apparatus d. The lateral ventriclesarrow_forwardWhich of the following is true? A. Muscle fibers either will contract with all the force possible under existing conditions or will not contract at all. B. Skeletal muscles can contract with varying degrees of strength given different circumstances. C. Muscle length does not have an effect on contractile strength. D. Metabolic condition of the myocyte does not have an effect on contractile strength.arrow_forwardBotulism toxin inhibits the release of acetylcholine at the neuromuscular junctions. What effect does this have on the muscle activity? a. Muscles will contract continuously. b. Muscles will contract sporadically, without conscious control. c. Muscles will not contract because they will not receive nerve stimulation. d. There will be no effect on muscle activityarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & 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 & Company
Laboratory 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
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
GCSE PE - ANTAGONISTIC MUSCLE ACTION - Anatomy and Physiology (Skeletal and Muscular System - 1.5); Author: igpe_complete;https://www.youtube.com/watch?v=6hm_9jQRoO4;License: Standard Youtube License