| 释义 |
nerve cord
noun[ C ]
anatomy specializeduk /ˈnɜːv ˌkɔːd/ us /ˈnɝːv ˌkɔːrd/
a hollow tube of nerve tissue that forms or develops into the spinal cord and nervous system in humans and some animals:
The nerve cord found in most chordate embryos develops into the brain and spinal cord.
Vertebrates are chordates in which the dorsal nerve cord is surrounded by vertebrae made from cartilage or bone.
one of two nerves that run the length of the body of some invertebrates(= animals without a backbone), such as insects and worms:
The main dorsal and ventral nerve cords extend the full length of the body.
longitudinal nerve cordThe flatworm central nervous system has an archaic brain located in the head region and paired longitudinal nerve cords.
Possibly the role of the notochord in human embryos is to induce the epidermis to fold up to form a nerve cord.
The brain of arthropods and cephalopods arises from twin parallel nerve cords that extend through the body of the animal.
SMART Vocabulary: related words and phrases
The brain & nervous system
abducens nerve
abducent nerve
accessory nerve
alexithymia
allism
glossopharyngeal nerve
grey matter
hemispheric
hemispherical
hindbrain
neurogenic
neurogenically
neuroglia
neuroglial
neurohormonal
reticular formation
rhinencephalon
rhombencephalon
right brain
right-brained
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