Answered: Predict the consequence if presynaptic…

Predict the consequence if presynaptic action potentials in an axonrelease insufficient acetylcholine to depolarize a skeletal muscle fiber tothreshold.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter8: Muscle Physiology

Section: Chapter Questions

Problem 16UC

See similar textbooks

Related questions

Q: which decreases cytoplasmic calcium ion concentration The relaxation of skeletal muscle relies on…

Q: In your own words, describe the main events occurring between the arrivalof an action potential at a…

A: The chemical synapse that favors the transmission of the signal from the motor neurons to the muscle…

Q: Explain in detail: 1) how an action potential occurs in a lower motor neuron, 2) how the motor…

A: Action Potential --- Propagation of information in the nervous system from central nervous system…

Q: In what ways does the neural control of smooth muscle activitydiffer from that of skeletal muscle?

A: Muscles are contractile tissues grouped and coordinated in function. Three groups of muscles present…

Q: Describe the general anatomical design of a muscle spindle and discuss its physiological function.

A: Muscle spindles are a special type of sensory receptors (proprioceptors) present inside the muscle…

Q: h) Depolarization of the T tubule membrane activates the sarcoplasmic reticulum via a) muscarinic…

A: INTRODUCTION In the membrane structure T - tubule membrane is mainly associated with a…

Q: Describe the function of acetylcholinesterase and discuss its physiological significance.

A: Enzymes are the biological catalyst and they speed the rate of chemical reaction within the cells.…

Q: .The poison ouabain (wah-BAY-in), or arrow poison, blocks the Na+ K+pump. What effect would this…

A: Ouabain is also called the g-strophanthin. It is a toxic substance derived from a plant that was…

Q: Match the word/term with the appropriate characteristic fast fibers/ Type Ilb or Ilx fibers fast to…

A: Introduction :- Individual muscle fibres make up skeletal muscles. Muscle fibres, like muscles…

Q: The region where a motor nerve fiber meets a skeletal muscle fiber is called a/an _____.

A: Muscles are the connective tissue that helps in producing movement in the body. There are three…

Q: Describe the structural features of a neuromuscular junction andthe role of acetylcholine in…

A: Introduction Complex organisms such as Multicellular organisms needs control and coordination…

Q: Acetylcholine is necessary for the depolarization of skeletal muscle cells. Which of the following…

A: * Acetylcholine is an chemical that functions in brain and body as neurotransmitter. *It is an…

Q: Explain the types of exercise that require more fast-twitchversus slow-twitch muscle fibers.

A: Skeletal muscles are made up of different types of muscle fibers (cylindrical muscle cell) which…

Q: Caffeine prolongs the life span of acetylcholine molecules in the motor junctions. Explain how this…

A: Caffeine is naturally present in tea, coffee and it stimulates the the brain and central nervous…

Q: Give an account of signalling at a neuromuscular junction through the nicotinic acetylcholine…

A: The nicotinic acetylcholine receptor is a transmembrane allosteric protein that opens an inherent…

Q: Describe the functions of gamma motor neurons and explain why they are stimulated at the same time…

A: The gamma motor neurons innervate the muscle spindle at every finish. they permit contraction of the…

Q: Explain reciprocal innervation of skeletal muscles.

A: The principle of reciprocal innervation—the contraction of one muscle or group of muscles with the…

Q: Describe motor control in terms of the conceptual motor control hierarchy. Use the following terms:…

A: The axon terminals of the many neurons junction on a motor neuron at intervals in the brain stem or…

Q: Explain the specific role of acetylcholine (ACh) instimulating a muscle fiber to contract.

A: Acetylcholine (ACh) is a neurotransmitter that is secreted by the nerve terminals into the synapse.…

Q: Describe the length-tension relationship in skeletal muscle fibers.

A: The skeleton muscle varies in shape, size, and arrangement of fibers. These range from small strands…

Q: Discharge from muscle spindles could be increased by all the following, except :-a- increased…

A: Muscle tissue is soft tissues that provide ability to contract. Cardiac muscle, skeletal muscle, and…

Q: Explain the key steps in the contraction of a skeletal muscle fiber beginning at the neuromuscular…

A: Tendons attach skeletal muscles to the bone. Numerous bundles which make up the skeletal muscle are…

Q: Describe in relation to the functions of the muscular system. Excitable or Irritable.

A: The muscular system is one of the important systems in the body that helps in movement. This system…

Q: If ligand-gated K+ channels were to open in an unstimulated muscle fiber,how would this affect the…

A: The ligand-gated channels are those channels that open in response to the ligand which could be…

Q: Label different areas of an individual muscle unit known as a sarcomere below: Actin A Band Mline Z…

A: The sarcomere is the contraction unit in the skeletal muscles that are under the control of motor…

Q: Describe the physical state of muscle fiber in rigor mortis and the conditions that produce this…

A: According to the question, we have to mention the physical state of muscle fiber in rigor mortis and…

Q: Fill in the blank: The P wave corresponds to depolarization of the muscle fibers of the…

A: A human heart is 4 chambered mascular organ. Its present inside chest and its similar to a fist in…

Q: Fasciculations of lower motor neuron lesions :-a- are caused by injury currents initiated in the…

A: The brain is the most important part of the body that controls every action in our body. It is a…

Q: What would happen if the refractory period of a skeletal muscle fiber were abnormally prolonged well…

A: Refractory periods are period of time taken for an excitable membrane following an action potential…

Q: Explain the movement of ions into, out of, and within the muscle fber after Acetylcholine (ACh)…

A: The sarcolemma is the plasma membrane of the muscle cell that is surrounded by a basement membrane…

Q: Both the withdrawal reflex and the Golgi tendon reflex involve sensory signals that ultimately…

A: The reflex arcs can be of two types called the somatic reflex arc and the autonomic reflex arc. The…

Q: Which of the following can respond to increased stimulation with a graded response: a) motoraxon…

Q: Using pyramidal motor tract as a template, describe the voluntary control of skeletal muscles being…

A: Pyramidal tracts consist of the corticospinal tract and corticobulbar tract. The tracts are…

Q: ___________ crosses the synapse between a motor neuron and a muscle fiber and is responsibile for…

A: Muscle Contraction It stimulates when an action potential moves along the nerves to the muscles. It…

Q: List and describe the events that take place (and the structuresinvolved) between excitation of the…

A: Skeletal muscles require stimulus from motor neurons for contraction.

Q: D) If during the generation of an action potential in the skeletal muscle cell the membrane…

A: The important ions which generate or change the resting membrane potentials in nerve and muscle…

Q: One tretment for myasthenia gravis is a medication that blocks the activity of acetylcholinesterase.…

A: Myasthenia gravis: It is an autoimmune condition where the immune system attack between muscles and…

Q: Describe the ion dynamics of the muscle-contraction process.

A: Tension-generating regions within muscle cells are activated during muscular contraction. Muscular…

Q: Explain how more than one smooth muscle cell can be influenced by an action potential generated in…

A: Explain how more than one smooth muscle cell can be influenced by an action potential generated in…

Q: Describe the different potentials for regeneration of the three types of adult muscle after injury.

A: Muscle regeneration is a very dynamic process. This process usually starts during the first of 4–5…

Q: List and describe the structures associated with energy production within skeletal muscle fibers.

A: Respiration is biochemical process that is aimed at deriving energy from food. This can occur with…

Q: e What would happen if the refractory period of a skeletal muscle fiber were abnormally prolonged…

A: Introduction Refractoriness is the ability of any object of autowave nature (particularly excitable…

Q: Define the term Acetylcholine?

A: Synapse is the region where the conduction of nerve impulses from one neuron to another neuron…

Question

Predict the consequence if presynaptic action potentials in an axon
release insufficient acetylcholine to depolarize a skeletal muscle fiber to
threshold.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biochemistry and related others by exploring similar questions and additional content below.

Similar questions

The 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. myosin action potential tropomyosin acetylcholinesterase
Explain the specific role of acetylcholine (ACh) instimulating a muscle fiber to contract.
Provide a explantion of the Intracellular mechanism of smooth muscle relaxation via antagonists such as meypriame binding and blocking muscarinic receptors M3.
Provide a explantion and diagram of the Intracellular mechanism of smooth muscle relaxation via antagonists such as atropine binding and blocking muscarinic receptors M3. explain how Atropine blocks the acetylcholine receptors
Describe the effects of histamine and NO on smooth muscle activity.
Why is it important to remove acetylcholine from its binding to acetylcholine receptors once the neural stimulus ends? What can be the possible consequence of the non-removal of acetylcholine to the skeletal muscle fiber?
If a single twitch of a skeletal muscle fiber lasts 40 msec, what action potential stimulation frequency (in action potentials per second) must be exceeded to produce an unfused tetanus?