What part of the spinal cord represents an increase in cell body mass for upper limb control?
cervical enlargement
The spinal cord has an obvious enlargement in the cervical region, called the cervical enlargement, where cell bodies controlling the upper limbs arise.
T/F
Cell bodies of somatic motor neurons are located in the ventral (anterior) horn of the spinal cord.
True
Cell bodies of sensory neurons are located in ________.
the dorsal root ganglia of the spinal cord
White matter of the spinal cord contains ________.
myelinated and unmyelinated nerve fibers
What region of the brain stem serves as a bridge between the brain stem and the cerebellum?
pons
The pons is the point at which all information entering or exiting the cerebellum is collected. Descending motor input and ascending sensory input that feed the cerebellum and all cerebellar output enter or exit the cerebellum through several cerebel
Nuclei of cranial nerves V (trigeminal), VI (abducens), and VII (facial) are found in the _________.
pons
The brain stem consists of the ______________.
midbrain, medulla, and pons
Vital centers for the control of heart rate, respiration, and blood pressure are located in the ________.
medulla oblongata
Degeneration of the dopamine-releasing neurons of the _______ is the ultimate cause of Parkinson's disease.
substantia nigra
The two longitudinal ridges on the medulla oblongata where many descending fibers cross over are called the _________.
pyramids
The cranial nerve with a cervical origin (spinal cord) is the _________.
accessory nerve
Bell's palsy is characterized by __________.
paralysis of facial muscles
Mixed cranial nerves containing both motor and sensory include all except _______.
olfactory