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. Anatomy (from the Greek anatomia, from ana separate apart from and temnein, to cut up cut open is a branch of Biology that is the consideration In vertebrates the dorsum contains the backbone. Vertebrates are members of the Subphylum Vertebrata, Chordates with backbones or spinal columns The grouping sometimes includes In Human anatomy, the vertebral column ( backbone or spine) is a column of 34 Vertebrae the Sacrum, Intervertebral 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 fields of Anatomy, anatomical terms of location are descriptive terms to help identify relative positions or directions within a species
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. A leg is a limb on an Animal 's Body that supports the rest of the animal above the ground between the Ankle and the Hip and is used for 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. A dorsal fin is a Fin located on the backs of some Fishes Whales Dolphins and Porpoises as well as the (extinct In Anatomy and Neurology, the dorsal root Ganglion (or spinal ganglion) is a nodule on a Dorsal root that contains cell bodies of In Anatomy and Neurology, the dorsal root (or posterior root) is the afferent sensory root of a Spinal nerve. In the Sphenoid bone, the anterior boundary of the Sella turcica is completed by two small eminences one on either side called the Middle clinoid processes, while In Human anatomy, the dorsalis pedis artery ( dorsal artery of foot) is a Blood vessel of the Lower limb that carries oxygenated blood to the The posterior (or dorsal branches (or divisions of the Spinal nerves are as a rule smaller than the anterior divisions Snakes, like other Reptiles have a skin covered in scales. Snakes are entirely covered with scales or Scutes of various shapes and The dorsal respiratory group ( DRG) is located in the dorsomedial region of the medulla, and is composed of cells in the Solitary tract nucleus. The dorsal venous arch of the foot is a superficial vein that connects the Small saphenous vein and the Great saphenous vein. Dorsiflexion is the movement which decreases the angle between the foot and the leg so that the toes are brought closer to the shin
In lepidoptera, the dorsum also refers to the trailing edge of the wing (the leading edge is called the costa). Lepidoptera is an order of Insect that includes Moths and butterflies. "Tornus" redirects here For the Gastropod Genus, see Tornus (gastropod.
Human Neuroanatomy
In human neuroanatomy, once you reach the forebrain, dorsal is equivalent to superior and ventral is equivalent to inferior. Neuroanatomy is the science for localizing function in the Human brain. In the Anatomy of the Brain of Vertebrates, the prosencephalon (or forebrain) is the Rostral -most (forward-most portion of the In fields of Anatomy, anatomical terms of location are descriptive terms to help identify relative positions or directions within a species [1]
Nerve rootlets stemming from the spinal cord (CNS) form dorsal (sensory) and ventral (motor) roots before these unite to form the spinal nerve (PNS). The spinal cord is a long thin tubular bundle of Nerves that is an extension of the Central nervous system from the brain and is enclosed in and protected The term spinal nerve generally refers to the mixed spinal Nerve, which is formed from the dorsal and ventral roots that come out of the Spinal cord.
See also
References
- ^ Young and Young: Basic Clinical Neuroanatomy
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