Answer: myelin sheath.
- A myelin sheath
- B cell wall
- C outer capsule
- D tissue cortex
Correct answer: A. myelin sheath
Explanation: The myelin sheath insulates the axon and speeds impulse conduction.
The four basic animal tissue types and their core functions: epithelial (covering/lining), connective (support and transport), muscular (movement), and neural (signal conduction).
Concept context
The four basic animal tissue types (epithelial, connective, muscular, neural) and the cockroach as a model organism for organ-system level organisation.