NSC Exam 4 | Verified Exam Questions and Answers | Latest Updated
Study Material 2026
Question:
Movements
Answer:
are simple reflexes with brief muscle activation
(eyeblink, hiccup, finger twitch)
Question:
Acts (action patterns)
Answer:
-complex, sequential movements
Question:
-(honking your car horn, writing your name, playing lead guitar)
Motor plan (motor program)
Answer:
set of muscle commands established
before the action occurs
Question:
open-loop control
Answer:
-maximizes speed
Question:
-no guiding external feedback
-ballistic movements
ballistic movements
Answer:
-rapid; completed no matter what sensory
feedback is received
,Question:
-all or none
-cough
Closed-loop control
Answer:
-maximizes accuracy- information from
what is being controlled flows back to the controlling device
Question:
-ramp movements
Ramp movements (smooth movements)
Answer:
slower, sustained
motions guided by feedback; touching your nose
Question:
a cough is a
Answer:
ballistic (open loop) movement
Question:
antagonists
Answer:
-muscles that contract when others extent
Question:
-biceps and triceps
synergists
Answer:
muscles that act together
Question:
tremor
,Answer:
alternation of flexor-extensor contraction normally
present, but if poorly regulated it is debilitating
Question:
myosin
Answer:
thick filament
Question:
actin
Answer:
thin filament
Question:
neuromuscular junction
Answer:
where motor neuron terminal and muscle
fiber meet
Question:
motor unit
Answer:
one motoneuron's axon and all its target fibers
Question:
proprioception
Answer:
-collection of information about body movements
and position
Question:
-muscle spindles and Golgi tendon organs
muscle spindles
, Answer:
-responsive to muscle stretch
Question:
-afferent nerve impulses inform spinal cord of stretch
Golgi tendon organs
Answer:
- respond to muscle contraction, less to
stretch
Question:
-stimulation inhibits motoneurons, relaxes extreme tension and prevents damage
-attaches muscle to bone
-fires when force is high
steroids effect on tendons
Answer:
muscle increases, but tendons remain
the same--> use of muscle makes tears on tendon
Question:
stretch reflex circut
Answer:
1. muscle is stretched
Question:
2. excitation of muscle spindle afferents
3. excitation of motoneurons
4. agonist muscle stimulated to oppose stretch (bicep)
5. antagonist muscle is inhibited (tricep)
why don't you fall over when you extend your arm?
Answer:
brain shifts
center of graity
Study Material 2026
Question:
Movements
Answer:
are simple reflexes with brief muscle activation
(eyeblink, hiccup, finger twitch)
Question:
Acts (action patterns)
Answer:
-complex, sequential movements
Question:
-(honking your car horn, writing your name, playing lead guitar)
Motor plan (motor program)
Answer:
set of muscle commands established
before the action occurs
Question:
open-loop control
Answer:
-maximizes speed
Question:
-no guiding external feedback
-ballistic movements
ballistic movements
Answer:
-rapid; completed no matter what sensory
feedback is received
,Question:
-all or none
-cough
Closed-loop control
Answer:
-maximizes accuracy- information from
what is being controlled flows back to the controlling device
Question:
-ramp movements
Ramp movements (smooth movements)
Answer:
slower, sustained
motions guided by feedback; touching your nose
Question:
a cough is a
Answer:
ballistic (open loop) movement
Question:
antagonists
Answer:
-muscles that contract when others extent
Question:
-biceps and triceps
synergists
Answer:
muscles that act together
Question:
tremor
,Answer:
alternation of flexor-extensor contraction normally
present, but if poorly regulated it is debilitating
Question:
myosin
Answer:
thick filament
Question:
actin
Answer:
thin filament
Question:
neuromuscular junction
Answer:
where motor neuron terminal and muscle
fiber meet
Question:
motor unit
Answer:
one motoneuron's axon and all its target fibers
Question:
proprioception
Answer:
-collection of information about body movements
and position
Question:
-muscle spindles and Golgi tendon organs
muscle spindles
, Answer:
-responsive to muscle stretch
Question:
-afferent nerve impulses inform spinal cord of stretch
Golgi tendon organs
Answer:
- respond to muscle contraction, less to
stretch
Question:
-stimulation inhibits motoneurons, relaxes extreme tension and prevents damage
-attaches muscle to bone
-fires when force is high
steroids effect on tendons
Answer:
muscle increases, but tendons remain
the same--> use of muscle makes tears on tendon
Question:
stretch reflex circut
Answer:
1. muscle is stretched
Question:
2. excitation of muscle spindle afferents
3. excitation of motoneurons
4. agonist muscle stimulated to oppose stretch (bicep)
5. antagonist muscle is inhibited (tricep)
why don't you fall over when you extend your arm?
Answer:
brain shifts
center of graity
