Which parts of the human body contain the ring-like muscles called sphincters?
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A sphincter is a circular muscle which normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. There are at least 42 different sphincters in the human body, some of them microscopic in size.\n\nSome examples of sphincters include:\n\nAt the anus, there are two sphincters which control the exit of feces from the body. \nThe cardia, or cardiac sphincter at the upper portion of the stomach. This sphincter prevents the acidic contents of the stomach from moving upward into the esophagus. \nThe pyloric sphincter, at the lower end of the stomach. \nThe sphincter urethrae, or urethral sphincter, controlling the exit of urine from the body. \nThe sphincter pupillae, or pupillary sphincter, belonging to the iris in the eye. \nThe sphincter of Oddi, or Glisson's sphincter, controlling secretions from the liver, pancreas and gall bladder into the duodenum. \nThe orbicularis oris muscle, a muscle around the mouth.\n\nwow i didn't know that till now, you learn something new every day lol
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You are referring to the upper part of the trapezius and the levator scapula.\n\nShrugs hit it pretty directly.  Rowing exercises are also a great way to use the mid and lower fibers a bit more.
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Lymph nodes, also incorrectly called "Lymph glands" (they do not secrete anything and are therefore not glands), are components of the lymphatic system. Lymph nodes act as filters, with an internal honeycomb of connective tissue filled with lymphocytes that collect and destroy bacteria and viruses. When the body is fighting an infection, these lymphocytes multiply rapidly and produce a characteristic swelling of the lymph nodes. Humans have approximately 500-600 lymph nodes. Clusters of lymph nodes are found in the underarms, groin, neck, chest, and abdomen
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The larynx (plural larynges), or voicebox, is an organ in the neck of mammals involved in protection of the trachea and sound production. The larynx houses the vocal cords, and is situated at the point where the upper tract splits into the trachea and the esophagus.\n\n\nThe structure of the larynx is mainly composed of cartilage bound by ligaments and muscle. At the front is the thyroid cartilage, creating the prominence of the Adam's apple in humans. The inferior horns (protrusions at the bottom rear of the thyroid cartilage) of the thyroid cartilage rest on a ring-shaped cartilage called the cricoid cartilage which connects the larynx to the trachea. The cricoid cartilage resembles a signet ring (narrow in front, broader in back). Above the larynx is the hyoid bone, by which (via various muscles and ligaments) the larynx is connected to the jaw and skull. These muscles move the larynx during swallowing. The hyoid is the only floating bone in the body; it is not 'attached' to any other bones. The epiglottis is another cartilage that extents upwards behind the back of the tongue and projects down through the hyoid bone. It connects to the thyroid cartilage just beneath the thyroid notch (the Adam's apple).\n\nThe space defined by these main cartilages can be divided roughly into the supraglottis at the top and the glottis.\n\nThe glottis is defined as the space between the vocal folds (more commonly known as vocal cords), which are located at the upper rim of the cricoid cartilage. They attach to the thyroid cartilage at the front, and to the Arytenoid cartilages at the back. These are two roughly tetrahedral cartilages responsible for pulling the vocal folds together and apart (adduction and abduction — see Anatomical terms of location). The glottis is the laryngeal area of most interest to speech researchers, as it is widely believed to be where most of the control of phonation and pitch goes on. The vocal folds are muscular masses coated with a mucous membrane which protects much of the respiratory tract from foreign particles. Their inner edges contain the vocal ligament.\n\nThe supraglottis is that part of the larynx above the glottis. It contains the ventricle of the larynx (laryngeal sinus), the ventricular folds (or false vocal folds), the epiglottis, and the aryepiglottal folds — two folds of connective tissue that connect the epiglottis to the arytenoid cartilages. Muscles in the aryepiglottal folds can pull the leaf-shaped epiglottis down, sealing the larynx and protecting the trachea below from foreign objects.\n\nDuring swallowing, the larynx (at the epiglottis and at the glottis) closes to prevent swallowed material from entering the lungs; there is also a strong cough reflex to protect the lungs. Sensation is transferred by the superior laryngeal nerve (glottis and supraglottis) and the recurrent laryngeal nerve (subglottis and muscles), both branches of the vagus nerve.\n\nWhile articulation of the sound (the fine manipulation that creates the many different vowel and consonant sounds of the world's languages) is achieved by the use of the teeth, tongue, palate, and lips, sound is generated in the larynx, and that is where pitch and volume are manipulated.\n\nThe vocal folds can be held close together (by adducting the arytenoid cartilages), so that they vibrate (see phonation). The muscles attached to the arytenoid cartilages control the degree of opening.\n\nVocal fold length and tension can be controlled by rocking the thyroid cartilage forward and backward on the cricoid cartilage, and by manipulating the tension of the muscles within the vocal folds. This causes the pitch produced during phonation to rise or fall.
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Peristalsis is the process of involuntary wave-like successive muscular contractions by which food is moved through the digestive tract. The large, hollow organs of the digestive system contain muscles that enable their walls to move. The movement of organ walls can propel food and liquid and also can mix the contents within each organ. Typical movement of the esophagus, stomach, and intestine is called peristalsis. The action of peristalsis looks like an ocean wave moving through the muscle. The muscle of the organ produces a narrowing and then propels the narrowed portion slowly down the length of the organ. These waves of narrowing push the food and fluid in front of them through each hollow organ.\n\nThe process of peristalsis is used by peristaltic pumps.\n\nPeristalsis is also used at oviducts, ureters and other tube-like organs.\n\nIn the digestive tract, the muscularis externa (which consists of circular and longitudinal muscle) propels the material along the alimentary canal. During a peristaltic movement, the circular muscles contract behind the digested material; then a contraction of the longitudinal muscle follows which pushes the digested food further along the esophagus. (These peristaltic movements also occur in the large and small intestines.)\n\nThe word is derived from New Latin and comes from the Greek peristaltikos, peristaltic, from peristellein, "to wrap around," and stellein, "to place."\n\nAs opposed to the more continuous peristalsis of the small intestines, fecal contents are propelled into the large intestine by periodic Mass Movements. These mass movements occur anywhere from 1-3 times per day, occur in the large intestines and colon, and help propel the contents from the large intestine, through the colon, to the rectum.
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just inside your belly button is a ligament that attaches near your bladder.  This was originally a bundle of blood vessels passing through the umbilicus (umbilical cord); after birth these blood vessels, being no longer necessary, close up to form a ligament.
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The shoulder or pectoral girdle consists of articulations between the clavicle, scapula and the proximal end of the humerus. Simply the joint.\n\nShoulder is the general term we use every day which consists of the muscles of deltoid and trapezius.
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rectum, anal, bile, acrid, conjunctivitis, meningitis, congeal, coccyx, anorectal, anthrax, zygote, bacteria, nodule, pancreas, botulism, sphincter, cavity search, testes, feces, vomitus, phleghm, staphylococcus, dysmenorrhea, gonorrhea, syphilis, cholera, mucous, sarcophagus, drip, ooze, seep, weep, puke, fistula, fissure, hemorrhoid, flatulence, floater, fungus, gush, gastric, gag, glop, goop, germ, gingivitis, globular, hemorrahge, parasite, uterus, jaundice, ejaculation, mustard, herpetic, scrotum, spirochete, ringworm, trichinosis, vesicle, glandular
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hemorroids.\nclick here:http://en.wikipedia.org/wiki/Hemorrhoid
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In addition to the six extra-ocular muscles mentioned previously (Medial rectus, Lateral rectus, Superior rectus, Inferior rectus, Superior oblique, Inferior oblique), there are 3 sets of intra-ocular muscles (Sphincter pupillae-causing pupillary constriction, Dilater pupillae - causes pupillary dilation, Ciliary muscle-results in accomodation). The lids are opened by the levator palpebrae superiori and closed by the orbicularis oculi. \n\nHope you get a good grade.
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The danglely thing in the back of your throat, that looks like a punching bag is called the "uvula".  The tonsils are the larger glands on either side of the back of your throat.
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That is such a brilliant question!\n\nFor a man:\n1 an*l sphincter\n1 sphincter on the penis\n2 'earholes'\n2 nostrils\n1 mouth\n=7 in total\n\nWoah there!! It's not the same for women! They have 8: the vagina and urethra are separate holes (unless it's true that babies grow in the bladder and not the uterus...)\n\nThere are millions if you count sweat glands and the holes where hair follicles grow...\n\n[Edit: I wouldn't go so far as to say there were an infinite number!]\n[Edit: Hmmm.. what ARE the 9 holes, Foolsbane?]
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smooth organs\nstriated muscles\ncardiac heart
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The reproductive anatomy of the male human is largely external. The male gonads, called testes, hang in a sac of skin called the scrotum. The testes produce sperm, which, in humans, cannot survive long at body temperature. The penis is the erectile organ responsible for the transfer of sperm to the vagina of the female. Just before ejaculation, mature sperm travel from the epididymis, a coiled tube behind each testis, through a long duct called the vas deferens. Sperm leave the body in semen, a fluid produced by the seminal vesicles. The secretions of the prostate and Cowper’s glands provide additional nutrients for the sperm.\n\n\nAND THE OTHER INFORMATION ABOUT IT ARE AS BELOW.\n\n\nIn male vertebrates, the ducts are directly connected to the testes and include the epididymis, which lies attached to the testis and which transports sperm to the vas deferens. This carries the spermatozoa to the ejaculatory duct, which contracts to discharge sperm into the posterior urethra.\n\nIn most fishes, the ovary has a hollow expansion through which the ova pass into the cloaca. In most other vertebrates, however, no direct connection exists between the ovary and the oviducts that carry the ova into the cloaca or into the independent external opening. In mammals, when the Graafian follicle bursts, the egg falls towards the interior of the abdominal cavity. The oviduct (known in higher mammals as the Fallopian tube) has an open, funnel-shaped end located near the ovary, into which the mature egg is drawn by ciliary action. Occasionally, the egg misses the open end of the oviduct and falls into the abdominal cavity; such eggs are capable of being fertilized, resulting in ectopic pregnancies. In animals lower than marsupials the oviducts open directly into the cloaca; in marsupials and placental mammals, the oviducts, two of which are normally present, fuse at their cloacal ends to form a thick, muscular organ, the uterus or womb, in which the young develop, and a thinner channel, the vagina, which open to the exterior.\n\nFOR MORE INFORMATION YOU CAN CONTACT ME ON ad786_alcatel@yahoo.com or 0093799990020.\n\nThanks and Regards\n\nAssad.
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Tummy muscles on your sides.
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Anus, breast, cerebrum, disc, erogenous zone, fanny, g-spot, hymen, ileum, jaw, knob, labia, mammary, nipple, ovary, penis, quim, rectum, scrotum, tarsal, uterus, vagina, whisker, Xtralarge, You, zygote.\nI had to go with the body parts I'm afraid LOL
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there are hundreds of muscles in the human body...what exactly are you looking for?