Simple categories matching excitable:

• tissue,
• system,
• structure,
• organs,
• cell,
• membrane,

Members with property excitable:

• peripheral_nerve,
• brain,
• brain_cortex,
• neuroendocrine_cell,
• heart,
• neuron_assembly,
• gland,
• muscle,
• uterus,
• large_neuron,
• neuron,
• set,
• sensory_receptor,
• heart-muscle_cell,
• nerve,
• epithelium,
• endocrine_cell,
• nerves,
• sensory_cell,
• ventricular_myocardium,
• transformed_cell,
• bladder,
• myocardial_cell,
• skeletal_muscle,
• receptor_cell,
• epithelial_cell,
• cardiac_muscle,
• nervous_tissue,
• nervous_system,
• myocardium,
• muscle_fibre,
• heart-muscle_tissue,
• people,
• sensory_organs,
• retina,
• lymphocyte,
• smooth_muscle,
• glial_cell,
• fibroblast,
• retinal_membrane,
• endocrine_pancreas,
• pituitary,
• spinal-column_tissue,
• spermatozoon,
• pituitary_cell,
• muscle_tissue,
• heart_tissue,
• cardiac_tissue,
• cardiac_cell,
• mammalian_myocardium,
• myometrium,
• neuronal_cell,