1. Home
2. Flashcards
3. Preview

AnaPhy Chapter 8: Nervous System (Central and Peripheral Nervous Systems - Reflexes)

Home Get App Take Quiz Create The spinal column extends from the ____ to the ____. Foramen magnum at the base of the skull, second lumbar vertebra The inferior end of the spinal cord and the spinal nerves exiting there resemble a horse's tail called ___. Cauda equina Consists of myelinated axons; Outside of the spinal cord White matter A collection of neuron cell bodies; Center of spinal cord; Looks like a butterfly or the letter H Gray matter 3 columns of the white matter 1. Dorsal (posterior) 2. Ventral (anterior) 3. Lateral Consists of axons that conduct action potentials toward the brain Ascending tracts Consists of axons that conduct action potentials away from the brain Descending tracts Contain axons which synapse with interneurons Posterior horns Contain somatic neurons Anterior horns Contain autonomic neurons Lateral horns Fluid-filled space in center of cord Central canal Is an involuntary reaction in response to a stimulus applied to the periphery and transmitted to the CNS Reflex Occurs when muscles contract in response to a stretching force applied to them Stretch reflex Is a classic example of a stretch reflex Knee-jerk reflex or patellar reflex Is to remove a limb or another body part from a painful stimulus Withdrawal reflex A neuronal pathway by which a reflex occurs Reflex arc 5 basic components of a reflex arc 1. Sensory receptor 2. Sensory neuron 3. Interneurons 4. Motor neuron 5. Effector organ

Author ZDanuco ID 360022 Card Set AnaPhy Chapter 8: Nervous System (Central and Peripheral Nervous Systems - Reflexes) Description Updated 2022-11-28T11:05:55Z Show Answers