Shared Flashcard Set

Details

Lab Quiz 3
Reflexes, Skeletal Muscle Physiology, Frog Heart
29
Physiology
Undergraduate 2
04/16/2013

Additional Physiology Flashcards

 


 

Cards

Term
Ipsilateral
Definition
located on, or affecting the same side of the body
Term
Contralateral
Definition
located on, or affecting the opposite side of the body
Term
consensual reflex
Definition
when a stimulus on one side of the body creates a response on both sides of the body (pupil response)
Term

monosynaptic vs. polysynaptic reflex arc

 

Definition

mono: does not involve integration

poly: involves integration

Term
synaptic delay
Definition
time between the arrival of a presynaptic potential and the start of the post-synaptic potential
Term
interoceptor
Definition
sensory receptor that recieves stimulus from within the body, i.e. the gut and internal organs
Term
exteroceptor
Definition
external sensory receptors located on skin, eyes, oral cavity, ears, etc.
Term
proprioceptor
Definition
sensory nerve endings that provide information regarding body positioning
Term
sensory adaptation
Definition
the change in response to stimulus recieved by sensory receptors over time (decreased sensitivity)
Term
Latent Period
Definition
the time it takes for a muscle to react to a stimulus
Term
Motor Unit
Definition
made up of a motor neuron and the muscle fibers it innervates
Term
Treppe
Definition
the graduated, increasingly vigorous contractions that result from a series of identical stimuli (staircase effect)
Term
Tetanus
Definition
completely smooth sustained contraction, result of high frequency stimulation
Term
Wave or Temporal Summation
Definition
Potential summation occuring from repeated stimulation from a single presynaptic neuron
Term
Spatial Summation
Definition
Summation of stimuli from multiple presynaptic neurons on one postsynaptic neuron
Term
What factors contribute to muscle fatigue?
Definition
Reduction in the nerves ability to produce sustained stimuli, O2 depletion, ATP depletion, etc.
Term
isotonic/metric contractions
Definition

tonic: even force throughout contraction

metric: even length of muscle despite force

Term
Systole
Definition
contraction
Term
Diastole
Definition
relaxation
Term
Inotrope
Definition
changes force of contraction
Term
Chronotrope
Definition
Change in heart rate
Term
Extrasystole
Definition
premature cardiac contraction due to external stimuli
Term
automaticity/autorhythmicity
Definition
ability to perform repetitive tasks "automatically" without conscious effort, or in the case of the heart, the ability to beat rhythmically without external stimulation
Term
myogenic
Definition
taking place or functioning in ordered rhythmic fashion because of the inherent properties of cardiac muscle rather than specific neural stimuli
Term
Blood Pressure
Definition
systole /(over) diastole
Term
Pulse Pressure (PP)
Definition
Systole - Diastole = PP
Term
Mean Arterial Pressure (MAP)
Definition
Diastolic pressure + PP/3
Term
Stroke Volume (SV) "estimate"
Definition
PP x 1.7 = SV
Term
Cardiac Output (CO)
Definition
SV x HR = CO
Supporting users have an ad free experience!