Both nerves and veins form two vital components in transporting various elements in the body. While nerves form a part of the nervous system, veins on the other hand form an important component of the circulation system.
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The key difference between nerves and veins is that nerves are an axon bundle of neurons forming a part of the peripheral nervous system carrying nerve impulses, while the veins are blood vessels that give back deoxygenated blood towards the heart. There is a difference in the size of nerves and veins as well.
Nerves
- These are cable-like structures found in the body, framed for the conduction of the nerve impulses relaying information from one to another part of the body. They form a part of the nervous system
- Nerves are typically composed of bundle of fibers enclosing layers of fat and tissue spreading across the body
- Involved in the control and coordination of all parts of the body
- Nerves are functional in passing information through the axons to the target structures
- In addition to sending and receiving messages, they also process them into chemical signals, referred to as impulses
Veins
- These are tube-like blood vessels found all through the body
- These translucent structures operate by passing deoxygenated blood from tissues to the heart for it to get oxygen-rich again
- Except for the pulmonary veins (it carries oxygenated blood) and umbilical veins, all the veins carry impure blood
- Blood in veins flows with a lower speed and pressure
- These walls of veins are found just underneath the skin and are thin
Key Differences between Nerve and Veins
The table below depicts the differences between Nerve and Veins.
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Cord-like bundles composed of neurons through which impulses are transmitted between the Central Nervous system and the body |
Tube-like structures constitute an important part of the circulatory system of the body. Primarily involved in carrying deoxygenated blood to the heart |
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They form the nerve net of the nervous system |
They form the venous system of the circulatory system |
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Electrochemical pulses |
Deoxygenated blood |
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Composed of axons and dendrites |
Composed of three layers – membranous layer, a thin layer of bands of smooth muscle in the middle, and a layer of connective tissue |
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Mostly not interconnected |
All are interconnected |
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Vital in conducting sensory functions |
Carries deoxygenated blood towards the heart |
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Afferent, efferent, cranial, mixed and spinal nerves |
Pulmonary, systemic, deep and superficial veins |
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