Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 47.1, Problem 3R
Summary Introduction
To review:
The reason behind the muscle stiffening after death that occurs first in those muscles, which have least glycogen content.
Introduction:
Rigor mortis is the situation, in which muscles get stiffed after death. The condition arises due to the inability of myosin to get detached from the actin filaments as a result, of which the muscles remain in the contracted state.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A skeletal muscle can be stimulated, under laboratory conditions, with a supramaximal stimulus. Is it possible for the muscle to respond with a supramaximal contraction? Explain
Characteristics of smooth muscles fibers
are:
spindle shaped, unbranched, unstriated,
uninucleate and involuntary
spindle shaped, unbranched, multistriated,
uninucleate and involuntary
cylinderical, unbranched, unstriated,
uninucleate and involuntary
Cylindrical, unbranched, striated,
multinucleate and involuntary
Fat cells are characterized by:
affected by starvation
present in adults
they are heat insulator
they have signet ring appearance
abundant mitochondria
Both the withdrawal reflex and the Golgi tendon reflex involve sensory signals that ultimately control the same type ofmotor neurons and both are protective. Explain how one reflex can cause muscle contraction while the other causes musclerelaxation.
Chapter 47 Solutions
Life: The Science of Biology
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
- Why do tetanic contractions indicate the frequency of the nerve impulses causing contractions?arrow_forwardWhat evidence supports a sliding filament-cross-bridge mechanism of contraction in smooth muscle?, what factors determine relaxation in smooth muscle? and what determines the rate of contraction in smooth muscles?arrow_forwardDescribe the anatomical organization and basic contraction physiology of smooth muscle and how this allows for this muscle type to contract even when stretched at an extreme length?arrow_forward
- The two types of smooth muscle are unitary and multi unit. Which type would you expect to find in the muscularis externa, and what characteristics make it well suited for this location?arrow_forwardWhy might stretching a cramping muscle INCREASE the cramping, as well as why would contracting the opposing muscle rapidly improve the situation?arrow_forwardExplain why visceral smooth muscle contracts as a singleunit.arrow_forward
- How lactic acid affects the muscle(s) that are being exposed to lactic acid?arrow_forwardA motor unit from a skeletal muscle contains 1500 muscle fibers. Would this muscle be involved in fine, delicate movements or in powerful, gross movements? Explain.arrow_forwardA skeletal muscle can often maintain a moderate level of active tension for long periods of time, even though many of its fibers become fatigued Explain.arrow_forward
- What is the optimum muscle activity to undertake for muscular hypertrophy? Explain deeply.arrow_forwardAs lactate and other substances accumulate in an active muscle, they stimulate pain receptors and the muscle may feel sore. How might the application of heat or substances that dilate blood vessels relieve such soreness?arrow_forwardRecently, it has been observed that several muscle diseases and disorders are linked to problems with triad structure and function.One such disorder is called malignant hyperthermia, a dire hypermetabolic response to certain inhaled anesthetics such as halothane. Muscles become very rigid due to excessive contraction (especially the masseter muscle), the body temperature spikes, andmuscles break down. Death is certain if not treated. Given the principal symptoms of malignant hyperthermia, what is its likely cause?Propose a theoretical mechanism for a treatment that would dampen the deleterious effects of this disorder.arrow_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 Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
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