Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 10, Problem 8RQ
Summary Introduction
To determine:
The first ion released into cytoplasm of a muscle cell in response to electrical impulse that initiates the contraction of muscle.
Introduction:
Muscle contraction is initiated by an electrical impulse. It involves the sliding movement of myosin head groups across the actin filaments. The muscle cells are stimulated for contraction by the innervated nerve cells. These nerve cells trigger the generation of electrical impulse in the muscle cell through the release of neurotransmitter at the neuromuscular junction.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In skeletal muscle, the sarcolemma is directly covered by:
a) epimysium.
b) perimysium.
c) endomysium.
Which of the following causes ( the state of ) rigor in skeletal muscle ?a) lack of atp
b) decrease of intracellular ca2plus
c) increase in intracellular ca2+
d) lack of action potential in motor neurons
The transverse tubular system:A)speeds the transmission of an action potential down the length of a fiber.B)activates only one myofibril at a time.C)allows the deeper myofibrils to receive the effects of action potentials quickly. D)enables the rapid transport of lactic acid away from the muscle. E)allows for individual sarcomeres to contract independently Of the other.
Chapter 10 Solutions
Human Anatomy
Ch. 10 - What structural similarities are shared by all...Ch. 10 - Prob. 2CYUCh. 10 - Prob. 3CYUCh. 10 - What are the functional definitions of the origin...Ch. 10 - Place the following structures in order from...Ch. 10 - Which myofilaments are found only in the A band?Ch. 10 - Prob. 7CYUCh. 10 - Prob. 8CYUCh. 10 - Prob. 9CYUCh. 10 - Prob. 10CYU
Ch. 10 - Prob. 11CYUCh. 10 - Prob. 12CYUCh. 10 - Prob. 13CYUCh. 10 - Prob. 14CYUCh. 10 - The connective tissue that lies just outside the...Ch. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQCh. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Define motor unit.Ch. 10 - List the structural differences between the three...Ch. 10 - Cindy Wong was a good anatomy student, but she...Ch. 10 - Prob. 16RQCh. 10 - Prob. 17RQCh. 10 - Where is titin located, and what are its...Ch. 10 - What is the general distribution of skeletal...Ch. 10 - Prob. 1CRCAQCh. 10 - Prob. 2CRCAQCh. 10 - Chickens are capable of only brief bursts of...Ch. 10 - Takashi, an osteopathic physician, saw that Mrs....Ch. 10 - Why are muscle infections relatively rare...Ch. 10 - As a sprinter, Lateesha knew that the best way to...Ch. 10 - Prob. 7CRCAQCh. 10 - Prob. 8CRCAQCh. 10 - Prob. 9CRCAQ
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
- How does a muscle fiber incur an oxygen debt?arrow_forward31) which of the following are included in a triad found in skeletal muscle? a) actin, myosin and calcium b) an axon terminal, synaptic cleft and sarcolemma c) A T tubule and two adjacent terminal cisterns d) Larry, moe and curlyarrow_forward2 a) What does calcium do in a skeletal muscle cell and where in the cell does it come from? b) John’s Stetson (his hat) blew off his head in a strong wind and he sprinted down the hill to retrieve it. Where did his ATP come from in the first 6 seconds and the next 8 seconds of his run?arrow_forward
- If a muscle cell had very short T-tubules, how much tension would the muscle fiber create, relative to a normal muscle fiber? Assume sarcoplasmic reticulum can still react to activity at the neuromuscular junction. a)Less tension would be created. b) No difference in tension creation. c) More tension would be created. d) No tension would be created.arrow_forwardThe three key ions in muscular contractions are .... A) sodium, calcium, chloride B) calcium, sodium, phosphate C) calcium, chloride, potassium D) sodium, potassium, calciumarrow_forwardWhich of the following is found on the outside of skeletal muscles? a). Myofibrilsb). Sheathc). Bundlesd). Sarcomerearrow_forward
- Fast twitch muscle fibers are characterized by all of the following EXCEPT: a) fatigue resistant O b) direct relationship to the anaerobic energy system O c) rapid contraction O d) used in sprintingarrow_forwardWhich if the following statements are true? (Select all that apply.) a) Electromyography measures the number of motor units active in a muscle. b) Electromyography measures the frequency of muscle fibers in a muscle. c)Electromyography is a recording of the voltage produced by the skeletal muscle contractions. d) Electromyography is a measurement of all motor units in a muscle.arrow_forwardIn muscle cells, magnesium ions compete with calcium ions for binding sites on troponin molecules. If a person has too high a concentration of magnesium ions in the blood, magnesium ions can prevent calcium ions from binding troponin. A) What effect would this have on muscle contraction (strengthen, weaken, or no effect)? B) Use your knowledge of how muscle fibers contract to explain your answer in part A.arrow_forward
- A) Assuming that each individual muscle fiber generates the same amount of tension, which of the following skeletal muscles will produce the greatest amount of overall tension when fully stimulated? Muscle Total Number of Muscle Fibers in Muscle A 150 B 1000 C 600 Group of answer choices Muscle A Muscle B Muscle C B)The following list of events take place during a muscle contraction. Place the events in chronological order as they relate to a muscle contraction. Calcium is released from the sarcoplasmic reticulum. Myosin heads bind to actin. An action potential arrives at the axon terminal of a motor neuron. Calcium binds to troponin, displacing tropomyosin and exposing myosin head binding sites on actin. Myosin heads undergo power stroke and actin slides over myosin towards M line of sarcomere. Acetylcholine is released at the neuromuscular junction.arrow_forward14) after a muscle fiber has contracted, the calcium a) is secreted by the Golgi apparatus b) is chemically bound to the myofilaments c) renters the sarcoplasmic reticulum d) is destroyedarrow_forward20) which of following is true regarding skeletal muscle cells? a) All of these are properties of skeletal muscle cells b) they are striated c) they have many mitochondria d) they contain multiple nucleiarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Types of Human Body Tissue; Author: MooMooMath and Science;https://www.youtube.com/watch?v=O0ZvbPak4ck;License: Standard YouTube License, CC-BY