| erector muscles of hairs | Bundles of smooth muscle fibres, attached to the deep part of the hair follicles, passing outward alongside the sebaceous glands to the papillary layer of the corium; they act to pull the hairs erect, causing "goose bumps" or "goose flesh" (cutis anserina). Synonym: musculi arrectores pilorum, arrectores pilorum, erector muscles of hairs. (05 Mar 2000) |
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| erector spinae muscles | Origin, from sacrum, ilium, and spines of lumbar vertebrae; it divides into three columns, iliocostalis musculus, longissimus musculus, and spinalis musculus, which insert into ribs and vertebrae with additional muscle slips joining the columns at successively higher levels; action, extends vertebral column; nerve supply, dorsal primary rami of spinal nerves. Synonym: musculus erector spinae, erector muscle of spine, musculus sacrospinalis. (05 Mar 2000) |
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| musculus erector clitoridis | <anatomy, muscle> Origin, ramus of ischium; insertion, corpus cavernosum penis (or clitoridis); action, compresses the crus of the penis (or clitoris) forcing blood in its sinuses into the distal part of the corpus cavernosum; nerve supply, perineal. Synonym: musculus ischiocavernosus, musculus erector clitoridis, musculus erector penis. (05 Mar 2000) |
| musculus erector penis | <anatomy, muscle> Origin, ramus of ischium; insertion, corpus cavernosum penis (or clitoridis); action, compresses the crus of the penis (or clitoris) forcing blood in its sinuses into the distal part of the corpus cavernosum; nerve supply, perineal. Synonym: musculus ischiocavernosus, musculus erector clitoridis, musculus erector penis. (05 Mar 2000) |
| musculus erector spinae | Origin, from sacrum, ilium, and spines of lumbar vertebrae; it divides into three columns, iliocostalis musculus, longissimus musculus, and spinalis musculus, which insert into ribs and vertebrae with additional muscle slips joining the columns at successively higher levels; action, extends vertebral column; nerve supply, dorsal primary rami of spinal nerves. Synonym: musculus erector spinae, erector muscle of spine, musculus sacrospinalis. (05 Mar 2000) |
| erector | 1. One who, or that which, erects. 2. <anatomy> A muscle which raises any part. 3. <physics> An attachment to a microscope, telescope, or other optical instrument, for making the image erect instead of inverted. Source: Websters Dictionary (01 Mar 1998) |
| erector muscle of spine | Origin, from sacrum, ilium, and spines of lumbar vertebrae; it divides into three columns, iliocostalis musculus, longissimus musculus, and spinalis musculus, which insert into ribs and vertebrae with additional muscle slips joining the columns at successively higher levels; action, extends vertebral column; nerve supply, dorsal primary rami of spinal nerves. Synonym: musculus erector spinae, erector muscle of spine, musculus sacrospinalis. (05 Mar 2000) |
| erector-spinal reflex | A contraction of part of the erector spinae muscle following scratching of the skin on its outer border. (05 Mar 2000) |
| auditory hairs | Cilia on the free surface of the auditory cells. (05 Mar 2000) |
| burrowing hairs | Hair's that grow at more acute angles than is normal, and in all directions; they incompletely clear the follicle, turn back in, and cause pseudofolliculitis. Synonym: burrowing hairs. (05 Mar 2000) |
| Schridde's cancer hairs | Thick lusterless hair's scattered in the beard and the temporal region, said to occur in cancerous patients but found also in persons with other cachectic conditions. (05 Mar 2000) |
| nettling hairs | Sharp-pointed barbed hair's of certain caterpillars which cause a dermatitis when brought in contact with the skin. (05 Mar 2000) |
| ingrown hairs | Hair's that grow at more acute angles than is normal, and in all directions; they incompletely clear the follicle, turn back in, and cause pseudofolliculitis. Synonym: burrowing hairs. (05 Mar 2000) |
| taste hairs | Hairlike projections of gustatory cells of taste buds; electron micrographs show them to be clusters of microvilli. (05 Mar 2000) |
| twisted hairs | pili torti |
| Frey's hairs | Short hair's of varying degrees of stiffness, set at right angles into the end of a light wooden handle; used for assessing sensation. (05 Mar 2000) |