Muscular System: Types of Muscles
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Questions and Answers

What is the defining characteristic of a muscle?

  • Ability to contract (correct)
  • Ability to relax
  • Ability to elongate
  • Ability to expand

Which type of muscle is spindle-shaped, smooth, and generally found in two layers?

  • Skeletal muscle
  • Cardiac muscle
  • Voluntary muscle
  • Smooth muscle (correct)

Which type of nerve system controls smooth muscles?

  • Parasympathetic and sympathetic nervous system (correct)
  • Central nervous system
  • Peripheral nervous system
  • Somatic nervous system

Where are smooth muscles typically found in the body?

<p>In the wall of internal organs (D)</p> Signup and view all the answers

What shape do cardiac muscle fibers typically have?

<p>Rectangular (B)</p> Signup and view all the answers

Which type of muscle includes fibers that form the cardiac conducting system?

<p>Cardiac muscle (C)</p> Signup and view all the answers

What is the main difference between cardiac muscle and skeletal muscle?

<p>Whether it is voluntary or involuntary (D)</p> Signup and view all the answers

How are skeletal muscles different from smooth muscles?

<p>Skeletal muscles have central nuclei while smooth muscles have multiple nuclei (D)</p> Signup and view all the answers

What is the main function of skeletal muscles?

<p>Maintaining posture (D)</p> Signup and view all the answers

Why are skeletal muscles called 'striated'?

<p>It refers to the arrangement of muscle fibers showing longitudinal and transverse striations (C)</p> Signup and view all the answers

Where are skeletal muscles NOT typically found?

<p>Internal organs like the heart (D)</p> Signup and view all the answers

What differentiates the origin from the insertion of a skeletal muscle?

<p>Proximal vs distal attachment points (B)</p> Signup and view all the answers

What is the type of muscle that provides for a wide range of movements, like the deltoid muscles?

<p>Multipennate (A)</p> Signup and view all the answers

What is the function of the fleshy (belly) part of a muscle?

<p>Contractile part responsible for muscle movement (A)</p> Signup and view all the answers

Which of the following connective tissues attaches muscles to bones?

<p>Tendon (D)</p> Signup and view all the answers

What is the type of muscle that is broad at its origin and tapers to a narrower insertion, exemplified by the pectoralis major muscle?

<p>Convergent (A)</p> Signup and view all the answers

Myalgia is characterized by:

<p>Pain in the muscles (C)</p> Signup and view all the answers

How are the fibers arranged in muscles with oblique fibers?

<p>Obliquely to the line of pull (C)</p> Signup and view all the answers

Which type of muscle fiber arrangement resembles half a feather?

<p>Unipennate (B)</p> Signup and view all the answers

Which type of muscle is arranged in a circle and allows closure of the eyes and mouth?

<p>Circular (B)</p> Signup and view all the answers

What is the classification of the sternomastoid muscle based on its fiber orientation?

<p>Convergent (C)</p> Signup and view all the answers

The fixed part of a skeletal muscle is known as the:

<p>Origin (C)</p> Signup and view all the answers

Which type of muscle fiber arrangement has muscle fibers that slope from both sides into a central tendon?

<p>Bipennate (D)</p> Signup and view all the answers

Myasthenia gravis is characterized by:

<p>Weakness of the muscles (C)</p> Signup and view all the answers

What is the contractile and fleshy part of a skeletal muscle called?

<p>Belly (A)</p> Signup and view all the answers

Which muscle type is also known as striated muscles?

<p>Striated muscles (D)</p> Signup and view all the answers

Which muscle type attaches to the bone using a fibrous cord?

<p>Tendon (A)</p> Signup and view all the answers

In which muscle attachment pattern do fibers attach to both sides of a tendon?

<p>Bipennate (A)</p> Signup and view all the answers

Which muscle type is an example of the convergent type of muscles?

<p>Pectoralis major (A)</p> Signup and view all the answers

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