A single bidirectional transport mechanism appears to be responsible for axonal transport. (From Human Anatomy and Physiology Marieb 8th Ed.)
diffusion through the membranes bulk flow transport via vesicles or caveolae
facilitated diffusion
it allows humoral factors in hypophyseal portal circulation or systemic circulation to access hypothalamic nuclei via retrograde axonal transport (i.e. feedback regulation of pituitary hormones)
active transport, osmosis, exocytosis, endocytosis, and diffusion.
osmosis
bike
Passive transport is the cellular transport mechanism. This all depends on the blood pressure.
transport absortion
Transport Nutrients
Active Transport
the two types are anterograde transport and retrograde transport. anterograde is the flow of new or recycled cell products from the soma to the axon terminals for growth or regeneration in the axon. retrograde is the return from the axon terminal back to the soma so products can be degraded or recycled.
diffusion through the membranes bulk flow transport via vesicles or caveolae
passive
the cocoon.
Active transport
none
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