![]() having no moral backbone lacking courage, resolution, etc. Meaning, pronunciation, translations and examples in American English. Viewed from the side of the body, the spine has the shape of a gentle double S curve. The idiom have no backbone is used to describe someone who lacks courage, strength of character, or the ability to stand up for themselves. INVERTEBRATE definition: An invertebrate is a creature that does not have a spine, for example an insect, a worm. Below the lumbar vertebrae, the spine terminates with two groups of vertebrae fused into single bones: the sacrum, composed of five vertebrae, and the coccyx, composed of four vertebrae. Below these are the 12 thoracic vertebrae, the supports on which the ribs are hinged, and then the five lumbar vertebrae, the largest movable vertebrae (the cervical are the smallest). The head turns from side to side by means of a pivotal motion between the two highest vertebrae. The topmost are the seven cervical vertebrae, which form the back of the neck, supporting the skull. its flexibility, determines the properties of the polymer (such as the glass transition temperature). I just wish Tom would have stood up for our team when the CEO started criticizing our work. Polymers are often classified according to the elements in the main chains. To have no courage, resolve, or strength of character. The nucleic acids constitute one of the four major. In polymer science, the polymer chain or simply backbone of a polymer is the main chain of a polymer. RNA and deoxyribonucleic acid ( DNA) are nucleic acids. There are usually 24 movable vertebrae and nine that are fused together. Ribonucleic acid ( RNA) is a polymeric molecule that is essential for most biological functions, either by performing the function itself ( non-coding RNA) or by forming a template for the production of proteins ( messenger RNA ). In the areas of the neck and lower back, the spine also can pivot, which permits the turning of the head and torso. The vertebrae also provide the protective bony corridor ( spinal canal) through which the spinal cord passes they can move to a certain extent and so give flexibility to the spine, allowing it to bend forward, sideways and, to a lesser extent, backward. A doctor would rarely call your spine a backbone, and people. For a manager, he seems to have no backbone. The spinal column is the axis of the skeleton the skull and limbs are in a sense appendages. If someone is spineless theyre a coward, or if they have a spine it means theyre not cowardly. To have no courage, resolve, or strength of character. the rigid bony structure in the midline of the back, composed of the vertebrae called also backbone, spinal column, and vertebral column.
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