exam #3 (m.b) Flashcards
which of the following best relates to the following descriptive terms - grasping, sucking, primitive, and survival?
reflexes
the compensation period might apply to high-school aged youth
true
crawling and creeping would occur during the reflexive period
false
from a developmental perspective, creeping would occur before crawling
false
hopping and skipping would occur during the FMP period.
true
making adjustments in one’s movements due to age/or injury would occur in the context-specific period s
false
a main difference between skills and reflexes is that skills are learned and voluntary whereas reflexes are innate and involuntary
true
involved with sensory info from outside the body
exteroreceptors
involves how the brain controls movement of the body
motor control
receptors involved w/the eye
rods and cones
involved with sensory information from internal organs
interoreceptors
receptor at the distal end
sensory neuron
most prevalent type of neuron
interneuron
changes an environmental stimulus into electrical impulses
receptor
involved with sensory information about body movement
proprioreceptor
changes in motor behavior across the lifespan and the processes that underlie these changes
motor development
afference involves taking in sensory information and efference involves a motor output, such as the movement of a muscle
true
the integration of sensory information occurs in the PNS
false
sensory neurons are afferent and motor neurons are efferent
true
the amplitude of action potential decreases over the distance it travels
false
a motor neuron receives stimuli from other neurons attached to it
true
a stimulus acting upon a neuron may not generate an action potential.
true
minus 55mV is the threshold that must be reached for an action potential to be generated
true
graded potentials do not adhere to the ALL OR NONE LAW
true
a postsynaptic neuron’s electrical impulse travels away from a synapse
true
there are more synapses in the brain than neurons
true
higher diameter myelinated axons have a higher speed of conduction compared to lower diameter myelinated axons
true
which of the following would best apply to the sensory information involved with the amount and movement of a dancer during a routine?
proprioreceptor
which of the following would best apply to the sensory information involved with shoulder joint range of motion for a upper-body flexibility routine?
proprioreceptor
a nocieceptor would respond to a heat source that causes a burning sensation
true
intensity coding refers to how the response of a receptor to a constant stimulus
false
sensitivity refers to the ability of a receptor to detect a stimulus
true
large receptor fields involve more accurate stimuli detection
false
a stimulus may involve multiple receptors
true
for the withdrawal reflex arc, the efferent motor neuron has a slower speed of transmission compared to the afferent sensory neuron.
false
low sensitivity means it takes a large stimulus to elicit a response from a receptor.
true
many receptors packed closely together, each with a small receptor field, enable more detailed discrimination of stimuli than fewer receptors with large receptor fields.
true
which of the following best explains why receptors are important for motor control?
motor control involves the brain’s role in coordinating physical movements and receptors take in sensory information that is processed by the brain and may result in a movement response.
