ANIMAL PHYSIOLOGY
NERVOUS SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Conditioned
|
|
|
Learned
|
|
|
Reflex
|
|
|
Voluntary
|
Detailed explanation-1: -When the lower motor neurons cannot receive signals from the upper motor neurons, it can cause muscle stiffness (spasticity) and overactive reflexes. This can make voluntary movements slow and difficult. Over time, individuals with MNDs may lose the ability to walk or control other movements.
Detailed explanation-2: -For example, if you step on something sharp, the nerves in your foot send a pain signal up your spinal cord to your brain. When your brain recognizes the danger, it sends another signal down your spinal cord to the nerves in your leg and foot muscles, telling them to pull away from the object.
Detailed explanation-3: -A reflex action is an involuntary and nearly instantaneous movement in response to a stimulus.
Detailed explanation-4: -So, the correct answer is ‘Receptors-Sensory neuron-Spinal cord-Motor neuron-Muscle’