11. Ganglia are made up of clusters of

Answer: A

Explanation:

Ganglia are made up of clusters of neurons.

Ganglia consist of clusters of neurons that act as relay points in the nervous system, facilitating communication between different parts of the body.

A) neurons

This option is correct because ganglia are specifically defined as structures that contain a collection of neuronal cell bodies. They play a crucial role in processing and transmitting information within the nervous system.

B) lymph vessels

This option is incorrect as lymph vessels are part of the lymphatic system, which is responsible for transporting lymph fluid, rather than being involved in neural processing or communication.

C) striated muscle cells

This option is incorrect because striated muscle cells are the building blocks of skeletal and cardiac muscle tissues, not related to the composition or function of ganglia in the nervous system.

D) epithelial cells

This option is incorrect as epithelial cells form protective layers and surfaces in the body, and do not cluster to form ganglia, which are specifically associated with neurons.

Conclusion

The correct answer is A) neurons, as ganglia are fundamentally composed of neuronal clusters essential for the nervous system's functioning. All other options fail to represent the biological structure and purpose of ganglia, making them incorrect in this context.