Anatomy Hw #10 Exam 3 – Flashcards

What part of the spinal cord represents an increase in cell body mass for upper limb control? -lumbar enlargement -conus medullaris -cervical enlargement -cauda equina

Cell bodies of somatic motor neurons are located in the ventral (anterior) horn of the spinal cord. T/F

The adult spinal cord ends between the level L1 and L2 of the vertebral column. T/F

Cell bodies of sensory neurons are located in ________. -sympathetic ganglia -the ventral root ganglia of the spinal cord -the thalamus -the dorsal root ganglia of the spinal cord

The white matter of the spinal cord contains ________. -myelinated and unmyelinated nerve fibers -cell bodies -oligodendrocytes -unmyelinated nerve fibers only

Which of the following regions of the brain stem serves as a bridge between the brain stem and the cerebellum? -pons -medulla oblongata -midbrain -thalamus

Nuclei of cranial nerves V (trigeminal), VI (abducens), and VII (facial) are found in the ________. -medulla -cerebrum -pons -midbrain

The brain stem consists of the ________. -midbrain, medulla, and pons -midbrain only -pons, medulla, cerebellum, and midbrain -cerebrum, pons, midbrain, and medulla

Vital centers for the control of heart rate, respiration, and blood pressure are located in the ________. -medulla oblongata -midbrain -pons -cerebrum

Degeneration of the dopamine-releasing neurons of the ________ is the ultimate cause of Parkinson's disease. -internal capsule -reticular formation -substantia nigra -red nucleus

The two longitudinal ridges on the medulla oblongata where many descending fibers cross over are called the ________. -lateral horns -pyramids -olives -nuclei

The cranial nerve with a cervical origin (spinal cord) is the ________. -vagus -glossopharyngeal -accessory -hypoglossal

Bell's palsy is ________. -characterized by loss of vision -often caused by inflammation of the trigeminal nerve -characterized by partial paralysis of diaphragm muscles -characterized by paralysis of facial muscles

Mixed cranial nerves containing both motor and sensory fibers include all except which of the following? -facial -olfactory -trigeminal -vagus

An emergency medical technician is examining a trauma victim by shining a pen light into her patient's eye. She records the reactivity of the patents pupils as they constrict when stimulated by the light. This test supports which of the following? 1. The patient has function of the oculomotor nerve (III). 2. The patient has suffered brain damage. 3. The patient has lost function of the optic nerve (II). 4. The patient has function of the trochlear nerve (IV).