Everything about Dorsum Biology totally explained
In
anatomy, the
dorsum is the upper side of animals that typically run, fly, or swim in a horizontal position, and the back side of animals (like humans) that walk upright. In
vertebrates the dorsum contains the
backbone. The term
dorsal refers to anatomical structures that are either situated toward or grow off that side of an animal. The opposite side of the animal is described with the terms ventrum and
ventral.
In humans, the top of the foot is considered dorsal. The top of the foot is called the dorsum. It contains small extensor muscles and extensor tendons from the
leg. It is supplied by the
deep peroneal nerve.
Examples of anatomical terms that include "dorsal" are the
dorsal fin of fish,
dorsal root ganglion,
dorsal root,
dorsal nerve,
dorsum sellae,
dorsal arch,
dorsalis pedis artery,
dorsal ramus,
dorsal scales of snakes,
dorsal respiratory group,
dorsal venous arch, and
dorsiflexion among others.
In
lepidoptera, the
dorsum also refers to the trailing edge of the wing (the leading edge is called the
costa).
Human Neuroanatomy
In human
neuroanatomy, once you reach the
forebrain, dorsal is equivalent to
superior and ventral is equivalent to
inferior.
Nerve rootlets stemming from the
spinal cord (
CNS) form dorsal (sensory) and ventral (motor) roots before these unite to form the
spinal nerve (
PNS).
Further Information
Get more info on 'Dorsum Biology'.
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