All of the following are excitable tissues except:

Meniscal cartilage is considered a non-excitable tissue, which is why it is the correct choice in this question. Excitable tissues, such as muscle fibers, sensory nerves, and secretory cells, have the ability to generate and propagate electrical impulses. This is due to their unique cellular properties and membrane potentials.

Muscle fibers can contract in response to electrical signals, which is essential for movement. Sensory nerves transmit signals from sensory receptors to the central nervous system, allowing for the perception of stimuli. Secretory cells respond to various signals by releasing substances, such as hormones or neurotransmitters, which also requires some form of excitability.

In contrast, meniscal cartilage is composed mainly of collagen fibers and chondrocytes and does not have the electrical excitability characteristic of the other tissues mentioned. This lack of excitability prevents it from generating action potentials or responding to electrical stimuli, making it the exception in this context.