Shared Flashcard Set

Details

VPHY 3100 UGA Test
Chapters 9-12, 18
17
Physiology
Undergraduate 3
09/28/2010

Additional Physiology Flashcards

 


 

Cards

Term
autonomic motor nerves innervate organs whose fxns are
Definition
not usually under voluntary control
Term
What are the effectors that respond to the autonomic regulation?
Definition
Cardiac, smooth muscles, glands
Term
How do the involuntary effects of autonomic innervation contrast with the voluntary control of skeletal muscles?
Definition
Somatic Motor Neurons
Term
motor/efferent nuerons
Definition
neurons of the PNS that conduct impulses away from the CNS
Term
two major types of motor neurons
Definition
somatic and autonomic
Term
somatic neurons
Definition
-cell bodies in CNS
-send axons to skeletal muscles
-usually voluntary
-conduct impulses along a single axon spinal cord-->nueromuscular junction
Term
autonomic neurons
Definition
-invole two neurons in efferent pathway
Term
denervation hypersensitivity
Definition
increased sensitivity of smooth muscles to neural stimulation after their innervation has been blocked or removed for a period of time
Term
both sympathetic and parasympathetic divisions consists of
Definition
preganglionic neurons (cell bodies in CNS) and postganglionic neurons (cell bodies in the PNS)
Term
how do the sym and parasym divisions differ
Definition
1) origination of the preganglionic fibers 2) location of autonomic ganglia
3)rest/digest:para fight/flight:symp
Term
How are muscles attached to bones?
Definition
By tendons
Term
What are skeletal muscles composed of
Definition
seperate cells called fibers, that are attached in parallel to tendons
Term
individual muscle fibers are covered by
Definition
endomysium
Term
bundles of fibers (_________) are covered by ______________
Definition
fascicles; perimysium
Term
the entire muscle is coverd by
Definition
epimysium
Term
Describe the striation of muscle fibers
Definition
Dark bands=A bands Light=I bands Z bands=middle of each I band
Term
the contraction of muscle fibers in vivo is stimulated by
Definition
somatic motor neurons
Supporting users have an ad free experience!