Brain and Behavior

Stretch reflexes are a dynamic response to a rapid __ inc or dec?__ in muscle length. The response includes excitation of ___ afferent fibers after receptor stimulation.

The biceps brachii reflex tests the ______ nerve at the ___ level of the CNS.

The triceps brachii reflex tests the ______ nerve at the ___ level of the CNS.

The brachioradialis reflex tests the ______ nerve at the ___ level of the CNS.

The knee/quadriceps reflex tests the ______ nerve at the ___ level of the CNS.

The ankle reflex tests the ______ nerve at the ___ level of the CNS.

The Jaw Jerk reflex tests the ______ nerve at the ___ level of the CNS.

Absence of the pupillary light reflex and oculomotor components of the VOR indicate a lesion of the ___.

Absence of the corneal reflex and jaw jerk reflex indicate a lesion in the ___.

Absence of the gag reflex and entire vestibulOcular reflex indicates a lesion in the level of the ___.

EARLY signs of lower motor neuron injury include:
(4)

What does flaccid paralysis mean?

True or False
A patient will have decreased muscle mass with an acute lower motor neuron injury.
True False

What is the one symptom that is specific for an acute lower motor neuron dysfunction?

A patient with a late lower motor neuron injury will have what symptoms? (5)

The main difference in symptoms between an acute and late LMN injury is that acute will have ___ while late has ____ and ____. The other symptoms are similar.

Isolated afferent fiber injury will result in decreased muscle tone and reflexes but not___ ___.

A unilateral lesion of an afferent limb of the trigeminal nerve on the right will result in loss of the direct and consensual response on the ____ _____ but the direct and consensual responses will be present on the ___.

An acute unilateral lesion to the afferent fibers of the vestibulo-ocular reflex will result in ____ of both eyeballs during head movement. This will also happen at rest in the acute phase.