Shared Flashcard Set

Details

PEDS 200 Final
N/A
12
Physiology
Undergraduate 2
12/04/2009

Additional Physiology Flashcards

 


 

Cards

Term

 

 

 

 

Electromyography (EMG)

Definition

 

 

 

 

 

Reflects both the quality and quantity of electrical activity generated during a muscle contraction.

Term

 

 

 

 

Muscle Biopsy

Definition

 

 

 

  • removal and analysis of a small portion of whole muscle.
  • provides a direct measurment of muscle properties.
Term

 

 

 

 

Name All the fiber types.

Definition
  1. Type I (slow oxidative muscle fibers)
  2. Type IIA (Intermediate muscle Fibers)
  3. Type IIB (Fast twitch fibers)
  4. Type IID(x) (non staining)
Term

 

 

 

Name all the imaging devices used to asses neuromuscular responses.

Definition
  • ultra sound
  • CT scanning
  • MRI
  • Near-Infared scanning
Term

 

 

 

 

Define Muscle Fiber.

Definition

 

 

 

 

a single motor neuron and the # of fibers stimulated.

Term

 

 

 

 

 

What is the general fiber to Nerve ratio for gross and fine movement patterns?

Definition
  • Muscle involed in gross movments patterns have a high fiber to nerve ratio.
  • Muscle involved in fine motor movement have a low fiber to nerve ratio.
Term

 

 

 

 

Neuromuscular Junction

Definition

includes the interface between the motor neuron and the muscel fiber. it is the site of acetylcholine release: the chemical stimulus to change muscle fibers permeability to Na and K thus initiating depolarization.

Term

 

 

 

 

Name the Motor Unit Types.

Definition
  1. Slow Twitch- slow oxidative or slow fatigue resistant.
  2. Fast Twitch:

-Fast Fatigue Resistant (FR) or fast oxidative glycolitic

-fast fatiguable or Fast Glycolytic

Term

 

 

 

 

 

Relationship between MU to Muscle fiber Types.

Definition

Slow Twitch - Type I

 

Fast Twitch - Type IIA, Type IIB, Type IID (x)

Term

 

 

 

 

How does fiber type very?

(hint: 4 different ways)

Definition
  • within multi-function muscles.
  • between different muscles
  • between the same muscle of two different people.
  • due to the function of the muscle.
Term

 

 

 

 

Hermans Size Principle.

Definition

states that a small motor neuron will fire first before a large motor neuron.

Supporting users have an ad free experience!