Netlike region of interspersed gray and white matter extending throughout the brainstem.
Bulges of white matter on the anterior aspect of the medulla. Formed by the largest motor tracts that pass from the cerebrum to the spinal cord.
Decussation of Pyramids
Crossing of axons just superior to the junction of the medulla and the spinal cord.
In the medulla, regulates rate and force of heartbeat and diameter of blood vessels.
In the medulla, controls proprioception and sensation of fine touch in the upper body.
Band of white matter composed of ascending sensory axons; extends through the medulla, pons and midbrain.
Nerves that control muscles during swallowing and tastebuds of posterior 1/3 of tongue.
Nerves that recieve signals from viscera, control cardiac and smooth muscle of visceral organs, controls secretion of digestive fluids.
Nerves whose cranial portion arise in the medulla; controls skeletal muscles of soft palate.
Part of brain located directly superior to the medulla and anterior to the cerebellum. Bridge that connects parts of the brain with one another.
Large synaptic relay station consisting of scattered gray centers; forms the ventral region of the pons.
Pneumotaxic and Apneustic
Areas of the pons that control inhaling, exhaling, and rhythm of breathing.
Motor part of these nerves goes to facial muscles, salivary glands, tear ducts, and nasal mucus sinuses. Sensory part controls anterior 2/3 of taste buds.
Pair of tracts in the anterior part if the midbrain. Contain corticospinal, corticobulbar, and corticopontine motor neurons which conduct nerve impulses from the cerebrum to the spinal cord. Also contain axons of sensory neurons that extend from the medulla to the thalamus.
Two superior elevations of the tectum; coordinates eye movements with visual stimuli.
Two inferior elevations of the tectum; coordinates head movement response to auditory stimuli.
Left and right nuclei in the midbrain that function with the cerebellum to coordinate muscle movement.
Only nucleus in the CNS that is not a synaptic relay station between neurons. Contains cell bodies of snesory neurons carrying proprioceptive signals from skeletal muscles of the head.
Motor part of these nerves controls movement of eyeballs and constriction of pupils and shape of lens. Goes to intrinsic and extrinsic eye muscles.