Lecture 15 Brainstem Motor Nuclei and Functions

Brainstem motor nulclei consists of the _______ tract.

T/F: Eye movement is part of the braintem motor nuclei-controlled movements.

Which movements are included in the corticobulbar tract?

CN corresponding to jaw movement?

CN for facial expression

CN for speech and swallow

CN for tongue movements

CN for Cranial parasympathetic motor system

T/F: Branchial muscles are not striated.

T/F: Sternocleidomastoid is a somatomotor muscle.

The ganglion provides space for cell bodies of (preganglionic/ postganglionic) neuron.

Brainstem visceromotor neurons:
List out the 1) preganglionic nucleus (cb), 2) cell body location 3) postganglionic nucleus, 4) target viscera of:
CN III, CN VII, CN IX, CN X.

Brainstem somatic and branchial neurons:
list the 1) cell body (cb), 2) cb location, 3) target muscle

Pyramidal cells in lamina V in charge of the facial muscles leave the cortex and their axons travel in the 1)_______ of corona radiata, enter the 2) ______ of midbrain, and hit the pons where it decussates into bilateral 3) ________ nucleus. It then continues to descend into the caudal pons and synapses with motor neurons of the 4) ____ and 5) _____ face.

The ipsilateral path goes to only the motor nucleus of the (upper/lower) face.

The (ipsilateral/contralateral) motor neuron for corticobulbar tract is stronger.

The corticobulbar tract then continues to the medulla in the ____ and peels off to the hypoglossal and ambiguus nucleus

While entering the cervical cord, the bilateral projection synapses in the _______.

T/F: Ambiguus motor nucleus travels through rostral medulla only.

The accessory motor neucleus is located in the _______ and ______.

Draw an outline of all the corticobulbar tract, from cerebral cortex to nucleus.

Which branch of the trigeminal nerve has motor branch in it?

The _______ nucleus are most medial on the brainstem, with _____ nucleus in the middle and ____ most lateral.

Outline the relative location of somatic skeletal motor, brachiomeric skeletal motor, autonomic, visceral afferent, balance and hearing, and somatic afferent nucleii on the cross section of the medulla.

Locate the trigeminal main sensory nucleus of CN V and trigeminal motor nucleus of CN V on the crosssection picture. Which one is more medial?

Draw the trigeminal motor reflex of jaw jerk reflex.

T/F: The cell body of Ia afferent of muscle spindle on masseter lies in the trigeminal ganglion.

Reflex involves only ________ motor neurons.

T/F: Both jaw openers and jaw closers have muscle spindle in them.

ischemic stroke in the ____ artery affects mostly face.

T/F: The cingulate motor areas have a billateral projection to the upper facial motor neurons and contralateral to the lower facial motor neurons.

Locate the trigeminal motor, trigeminal main, facial motor, and abuducens nucleus on the crosssection pons.

Draw the circuit for cornial reflex.

Motor neucleus for eye blink reflex lies in the ________.

Free nerve endings in the cornea has cell body in the ______

Interneuron cb for cornea reflex lies in the _________.

Locate the hypoglossal nucleus, dorsal motor nucleus, solitary nucleus, solitary tract, trigeminal nucleus, and ambiguus nucleus in the rostral medulla.

Outline the nerves in the nucleus ambiguus and spinal accessory nucleus.

Accessory nucleus can be found in C__ - C __ of the cervical spinal cord. They sit more (lateral/medial) to the lateral motor pool.

Locate the Edinger-Westphal nucleus, superior/inferior salivary nuclei, intermediate and glossalpharyngeal nerve

'crying ganglion' is the _________