Pons Flashcards
(9 cards)
Posterior to pons
4th ventricle
Cerebellum
Anterior to pons
Pontine cistern
Clivus
Separates the medial motor
neurons from the lateral
sensory neurons
Sulcus limit as
Internal structure of pons 2 parts
Pons proper
Pontine Tegmentum
Ventral pons consist
•Transvers fibers
•Longitudinal fibers
•Pontine nuclei
Dorsal Part consists
- Cranial nerve nuclei
- Ascending, descending
tracts - Reticular formation
Cranial nerve nuclei in pons
●5(trigeminal nerve):
-Lower parts of mesencephalic nucleus (upper pons)
-Upper parts of spinal nucleus (lower pons)
-Sensory principle nucleus
- Motor nucleus (upper pons)
6 (abducens n.):
- Motor nucleus (lower pons)
7 (facial n.):
Superior salivatory nucleus (lower pons)
Motor nucleus (lower pons)
Solitary nucleus (lower pons)
8 (vestibulocochlear n.):
Sup. and lateral vestibular nuclei (lower pons)
- Ant. and post. cochlear nuclei (lower pons)”
There are two main areas in the pons for
control of respiration:
1-The pneumotaxic center - upper pons
2-The apneustic center - lower pons