Table 4.

Differential distributions and characteristics of mitochondria (mito) in somata, dendrites, and axons

	Species	Cell type/Brain region	Age	Soma	Dendrite	Axon	Reference
% Area occupied by mito	Mouse	V1 L2/3 pyr. neurons	P36	N/A	> 50%	Distal axon, < 10%	[71]
	Mouse	L2/3 pyr. neurons	P21	N/A	69.58 ± 2.23%	8.41 ± 0.75%	[74]
	Mouse	L2/3 pyr. neurons	DIV21	N/A	69.6 ± 2.54%	4.95 ± 0.4%	[74]
	Rat	S1 L1-6	Juvenile	N/A	43.57 ± 1.73%	(Exc.) 11.19 ± 1.25%; (Inh.) 3.41 ± 0.65%; (Mye.) 0.40 ± 0.28%	[75]
Avg Volume	Mouse	V1 L2/3 pyr. neurons	P36	10–2.5-10–0.5 μm3	10–2.5—10–0.5 μm3	10–2.5—10–1.5 μm3	[71]
	Mouse	S1	Adult	N/A	0.89 ± 0.124 μm3	(Boutons) 0.056 ± 0.002 μm3	[72]
	Mouse	Hippocampal CA1 pyr. neurons	Adult	N/A	0.158 ± 0.017 μm3	(Boutons) 0.043 ± 0.002 μm3	[72]
	Mouse	Hippocampal CA1 pyr. neurons	4 m	~ 0.15 μm3	~ 0.14 μm3	(Mye.) ~ 0.27 μm3	[73]
	Mouse	Hippocampal DG granule neurons	4 m	~ 0.19 μm3	~ 0.27 μm3	(Mye.) ~ 0.12 μm3	[73]
	Mouse	Nucleus accumbens	11 m	N/A	0.195 ± 0.018 μm3	(Boutons) 0.05 ± 0.004 μm3	[72]
	Mouse	Dorsal cochlear nucleus	P17	N/A	1.357 ± 0.182 μm3	(Boutons) 0.375 ± 0.03 μm3	[72]
Mito length	Mouse	L2/3 pyr. neurons	P21	N/A	1.31–13.28 μm	0.45–1.13 μm	[74]
	Mouse	L2/3 pyr. neurons	DIV21	N/A	0.52 to 8.88 μm	0.3- 1.08 μm	[74]
	Mouse	V1 L2/3 pyr. neurons	P36	N/A	< 20 μm	< 1 μm	[71]
	Rat	Hippocampal neurons	DIV10	N/A	N/A	0.255–1.68 μm	[145]
Complexity index a	Mouse	V1 L2/3 pyr. neurons	P36	< 25	< 55	< 10	[71]
	Mouse	Hippocampal DG granule neurons	4 m	~ 4.8	~ 6.9	(Mye.) 2.8	[73]
	Mouse	Hippocampal CA1 pyr. neurons	4 m	~ 4.7	~ 5.2	(Mye.) 3.5	[73]

Abbreviations: avg average, ~ , average, DIV days-in-vitro, L cortical layer, m month, P postnatal, pyr. Pyramidal, V1 primary visual cortex, S1 primary somatosensory cortex, Exc Excitatory, Inh. Inhibitory, Mye. myelinated

^a Complexity index is quantified as described in [146]