exam #3 (m.b)

Question 1

which of the following best relates to the following descriptive terms - grasping, sucking, primitive, and survival?

Answer 1

reflexes

Question 2

the compensation period might apply to high-school aged youth

Answer 2

true

Question 3

crawling and creeping would occur during the reflexive period

Answer 3

false

Question 4

from a developmental perspective, creeping would occur before crawling

Answer 4

false

Question 5

hopping and skipping would occur during the FMP period.

Answer 5

true

Question 6

making adjustments in one’s movements due to age/or injury would occur in the context-specific period s

Answer 6

false

Question 7

a main difference between skills and reflexes is that skills are learned and voluntary whereas reflexes are innate and involuntary

Answer 7

true

Question 8

involved with sensory info from outside the body

Answer 8

exteroreceptors

Question 9

involves how the brain controls movement of the body

Answer 9

motor control

Question 10

receptors involved w/the eye

Answer 10

rods and cones

Question 11

involved with sensory information from internal organs

Answer 11

interoreceptors

Question 12

receptor at the distal end

Answer 12

sensory neuron

Question 13

most prevalent type of neuron

Answer 13

interneuron

Question 14

changes an environmental stimulus into electrical impulses

Answer 14

receptor

Question 15

involved with sensory information about body movement

Answer 15

proprioreceptor

Question 16

changes in motor behavior across the lifespan and the processes that underlie these changes

Answer 16

motor development

Question 17

afference involves taking in sensory information and efference involves a motor output, such as the movement of a muscle

Answer 17

true

Question 18

the integration of sensory information occurs in the PNS

Answer 18

false

Question 19

sensory neurons are afferent and motor neurons are efferent

Answer 19

true

Question 20

the amplitude of action potential decreases over the distance it travels

Answer 20

false

Question 21

a motor neuron receives stimuli from other neurons attached to it

Answer 21

true

Question 22

a stimulus acting upon a neuron may not generate an action potential.

Answer 22

true

Question 23

minus 55mV is the threshold that must be reached for an action potential to be generated

Answer 23

true

Question 24

graded potentials do not adhere to the ALL OR NONE LAW

Answer 24

true

Question 25

a postsynaptic neuron’s electrical impulse travels away from a synapse

Answer 25

true

Question 26

there are more synapses in the brain than neurons

Answer 26

true

Question 27

higher diameter myelinated axons have a higher speed of conduction compared to lower diameter myelinated axons

Answer 27

true

Question 28

which of the following would best apply to the sensory information involved with the amount and movement of a dancer during a routine?

Answer 28

proprioreceptor

Question 29

which of the following would best apply to the sensory information involved with shoulder joint range of motion for a upper-body flexibility routine?

Answer 29

proprioreceptor

Question 30

a nocieceptor would respond to a heat source that causes a burning sensation

Answer 30

true

Question 31

intensity coding refers to how the response of a receptor to a constant stimulus

Answer 31

false

Question 32

sensitivity refers to the ability of a receptor to detect a stimulus

Answer 32

true

Question 33

large receptor fields involve more accurate stimuli detection

Answer 33

false

Question 34

a stimulus may involve multiple receptors

Answer 34

true

Question 35

for the withdrawal reflex arc, the efferent motor neuron has a slower speed of transmission compared to the afferent sensory neuron.

Answer 35

false

Question 36

low sensitivity means it takes a large stimulus to elicit a response from a receptor.

Answer 36

true

Question 37

many receptors packed closely together, each with a small receptor field, enable more detailed discrimination of stimuli than fewer receptors with large receptor fields.

Answer 37

true

Question 38

which of the following best explains why receptors are important for motor control?

Answer 38

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.