Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which spinal nerve roots carry sensory nerve signals?
A
Ventral roots
B
Dorsal roots
C
Lateral roots
D
Anterior roots
Verified step by step guidance
1
Understand the structure of a spinal nerve: Spinal nerves are mixed nerves that carry both sensory and motor signals. They are formed by the combination of two roots: the dorsal root and the ventral root.
Learn the function of the dorsal root: The dorsal root contains sensory neurons that transmit sensory information from the body to the central nervous system (CNS). These neurons are afferent, meaning they carry signals toward the CNS.
Learn the function of the ventral root: The ventral root contains motor neurons that transmit motor commands from the CNS to the muscles and glands. These neurons are efferent, meaning they carry signals away from the CNS.
Differentiate between the roots: Sensory signals are carried by the dorsal roots, while motor signals are carried by the ventral roots. The lateral and anterior roots mentioned in the problem are not part of the spinal nerve structure.
Conclude that the correct answer is dorsal roots based on their role in carrying sensory nerve signals to the CNS.