Which tissue contains synapses and dendrites?

Which tissue contains synapses and dendrites?

• A. Grey matter
• B. White matter
• C. Peripheral tissue
• D. Cerebrospinal fluid

Answer: (A)

Synapses and dendrites are features of neurons, and their dense clustering happens where neuronal cell bodies reside. In the central nervous system, that area is the grey matter, which is rich in neuron cell bodies, dendrites, and synaptic connections. White matter, by contrast, is dominated by myelinated axons connecting different regions, so it has relatively few dendrites and synapses. Cerebrospinal fluid is a circulating fluid, not tissue, and peripheral tissue is not the CNS tissue that houses these neuronal structures. So the tissue that contains synapses and dendrites is grey matter.

Synapses and dendrites are features of neurons, and their dense clustering happens where neuronal cell bodies reside. In the central nervous system, that area is the grey matter, which is rich in neuron cell bodies, dendrites, and synaptic connections. White matter, by contrast, is dominated by myelinated axons connecting different regions, so it has relatively few dendrites and synapses. Cerebrospinal fluid is a circulating fluid, not tissue, and peripheral tissue is not the CNS tissue that houses these neuronal structures. So the tissue that contains synapses and dendrites is grey matter.