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Chapter 10: Muscular System
Types, Functions & characteristics
15
Biology
Undergraduate 1
12/12/2007

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Cards

Term
Which types of muscles have striated appearances?
Definition
  • Skeletal & Cardiac
Term
Which type of muscle has a spindle shape appearance?
Definition
  • Smooth
Term
What does skeletal muscle attach to?
Definition
  • bone, skin or fascia
Term
Where can you find smooth muscle?
Definition
  • hair follicles in skin
  • in walls of hollow organs -- blood vessels & GI
Term
Which types of muscles are involuntary?
Definition
  • Cardiac & smooth
Term
What is the prime function of muscle?
Definition
  • changing chemical energy into mechanical energy to perform work
Term
What are the 4 important functions of muscles?
Definition
  1. Producing body movements
  2. Moving substances within the body & regulating organ volumes
  3. Stabilizing body positions (maintaing postures)
  4. Producing heat
Term
How does muscle produce heat?
Definition
  • involuntary contractions of skeletal muscle (shivering)
Term
What are bands of smooth muscles called? And what do they do?
Definition
  • sphincters
  • they regulate organ volumes
Term
What is excitability?
Definition
  • the ability to respond to a stimuli by producing action potentials (nerve impulse, chemicals released from nerve cells)
Term
What is the one property of muscle tissue that can transmit electrical signals over membrane?
Definition
  • conductivity
Term
What is contractility?
Definition
  • the ability to shorten and generate force
Term
What are the properties of muscle tissue?
Definition
  • conductivity
  • contractility
  • excitability
  • elasticity
  • extensibility
Term
What is the one property of muscle tissue that can return to its original shape after being stretched?
Definition
  • elasticity
Term
What is the one property of muscle tissue that can be stretched without damaging the tissue?
Definition
  • extensibility
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