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Introduction to Muscles and Muscle Tissue quiz #6

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  • What is the function of muscle tissue in the movement of the shoulders?
    Skeletal muscle moves the shoulders for arm movement and stability.
  • How does muscle tissue contribute to the movement of the arms?
    Skeletal muscle contracts to move the arms in various directions.
  • What is the function of muscle tissue in the movement of the hands?
    Skeletal muscle enables fine motor movements and grip in the hands.
  • How does muscle tissue contribute to the movement of the fingers?
    Skeletal muscle contracts to flex, extend, and move the fingers.
  • What is the function of muscle tissue in the movement of the legs?
    Skeletal muscle contracts to move the legs for walking, running, and other activities.
  • How does muscle tissue contribute to the movement of the feet?
    Skeletal muscle moves the feet for balance, walking, and running.
  • What is the function of muscle tissue in the movement of the toes?
    Skeletal muscle moves the toes for balance and walking.
  • What are the four key properties shared by all muscle tissue?
    The four key properties are contractility, extensibility, elasticity, and excitability. These allow muscles to shorten with force, stretch, return to original size, and transmit stimuli.
  • How do the three types of muscle tissue differ in terms of location and voluntary control?
    Skeletal muscle is attached to bones and is voluntary, cardiac muscle is found in the heart and is involuntary, and smooth muscle is in hollow organs and is also involuntary.
  • What structural differences exist between skeletal, cardiac, and smooth muscle cells?
    Skeletal muscle cells are striated with many nuclei, cardiac muscle cells are striated with one nucleus and a branching pattern, and smooth muscle cells are non-striated, spindle-shaped, and have one nucleus.
  • What property allows slow-twitch muscle fibers to have a high resistance to fatigue?
    Slow-twitch muscle fibers have a high resistance to fatigue due to their ability to sustain contractions for long periods, which is related to their contractility and efficient energy use.
  • Which nerve innervates all fibers of the trapezius muscle?
    All fibers of the trapezius muscle are innervated by the accessory nerve (cranial nerve XI).
  • What is the term for the tearing of a muscle fiber or tendon?
    The tearing of a muscle fiber or tendon is called a strain.
  • What is the fibrous band that connects muscle to bone called?
    The fibrous band that connects muscle to bone is called a tendon.
  • What structure attaches muscle to bone?
    A tendon attaches muscle to bone.
  • Where is the pectoralis major muscle located in the human body?
    The pectoralis major muscle is located in the chest region.
  • What does extensibility refer to in muscle tissue?
    Extensibility refers to the ability of a muscle to stretch when pulled.
  • What stimulates skeletal muscle to contract?
    Skeletal muscle is stimulated to contract by action potentials transmitted from the nervous system.
  • What do muscle cells contain a lot of to support their function?
    Muscle cells contain a lot of nuclei (especially skeletal muscle cells) and mitochondria to support their energy needs for contraction.
  • What structure connects a muscle to a bone?
    A tendon connects a muscle to a bone.
  • What is the largest muscle in the human body?
    The largest muscle in the human body is the gluteus maximus.
  • Approximately what percent of body weight is made up of muscle tissue?
    Muscle tissue makes up approximately 40-50% of total body weight.