Research shows that men's brains are 10-15% larger on average than women's. However, size does not impact intelligence. Men ...

Are all axons covered with myelin? No; they can be either myelinated or unmyelinated. Myelinated axons are ensheathed along their entire length. The axon caliber (diameter) in mammalian PNS ranges ...

(B) Illustration of transverse section of myelinated axon at the internode. (C) Light microscopy of a mouse sciatic nerve at lower magnification. Toluidine blue staining. Myelin is stained in blue.

Further unpublished experiments show a similar pearls-on-a-string structure on myelinated axons, Watanabe says. And his team has seen pearling in human axons. Pullarkat points out that there are ...

If you said 'alpha motor neurone' then you'd be right. The nerves that innervate skeletal muscle have fast conducting, large diameter (alpha class) myelinated axons.