Chapter 08: Nervous System Flashcards
Study and just try your best all these are too much (23 cards)
The enteric nervous system is located in the–.
digestive tract
Indicate whether each statement is true or false
The human central nervous system consists of the brain, spinal cord, and nerves: FALSE
The peripheral nervous system consists of all the nervous tissue external to the CNS: TRUE
The CNS has two functional subdivisions, the sensory division and the motor division: FALSE
The ANS and the SNS are part of the motor division of the PNS: TRUE
Check all that are true statements regarding the sensory and motor nervous systems
-The sensory nervous system contain both PNS and CNS components
-The somatic nervous system component of the motor nervous system conducts impulses from the CNS to skeletal muscles
-The motor nervous system contains both CNS and PNS components
Which of the following statements regarding neuroglia is false
Neuroglia produce action potentials for skeletal muscles
Which of the following is mismatched?
Somatic nervous system–Sensory division of PNS
The peripheral nervous system includes the—.
cranial nerves
Label the parts of the nervous system
see image
Which of the following is the correct sequence of structures in a reflex arc
Sensory receptor, sensory neuron, interneuron, motor neuron, effector neuron
Check all that are true statements regarding
-The sensory contains both
-The somatic nervous system component of the motor nervous
-The motor nervous system contains both
The nervous system is involved in most body functions. Match the following definitions or examples with the correct term.
see image ( its correct)
The nervous system–.
all of these are correct
Check all of the items below that pertain to functions of the nervous system
-receives sensory input
-integration of information
-controlling muscles and glands
-maintaining homeostasis
-establishing and maintaining mental activity
-immune system regulation
check all the factors necessary for an action potential to occur
-voltage gated sodium channels open
-threshold is met
-chemically gated sodium channels remain closed
-chemically gated chloride channels open
-depolarization
Correctly label parts of a chemical synapse
see image
drag each label to the appropriate anatomical structure in this myelinated axon
see image
Curare blocks acetylcholine receptors at the motor end plate. This will– muscle contraction.
inhibit
Which of the following would increase conduction velocity of an action potential in an axon?
Wrap axon in Schwann cells
Match the term with the correct definition or example
*Action potential frequency: DIRECTLY PROPORTIONAL TO STIMULUS STRENGTH AND TO SIZE
*Subthreshold stimulus: ANY STIMULUS NOT STRONG ENOUGH
*Threshold stimulus: PRODUCES A GRADED POTENTIAL JUST STRONG ENOUGH TO REACH THRESHOLD AND CAUSES
*Maximal stimulus: STIMULUS THAT IS JUST STRONG ENOUGH TO PRODUCE MAXIMUM FREQUENCY OF ACTION
*Submaximal stimulus: ALL STIMULI BETWEEN THRESHOLD THRESHOLD AND A STIMULUS JUS STRONG ENOUGH TO PRODUCE
*Supramaximal stimulus: ANY STIMULUS STRONGER THAN ONE THAT IS JUST STRONG ENOUGH TO PRODUCE
Identify the components of a typical neuron
see image
TTX is a toxin that blocks Na+ channels from opening. What effect would this have on the function of neurons (specifically the action potential)?
The neurons would be unable to depolarize
Why is the resting membrane potential negative?
The membrane is more permeable to potassium ions than to sodium ions at rest
Correctly identify and label the structures associated with a spinal nerve and the spinal cord
see image on ipad ( still Q 22)
Drag each label to the appropriate anatomical structure
