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14-September-2008 18:02:37 - Neck For other uses, see Neck disambiguation. This article or section includes a list of references or external links, but its sources remain unclear because it lacks inline citations. You can improve this article by introducing more precise citations where appropriate. June 2008 Neck The neck of a man Latin collum Dorlands/Elsevier c_46/12249447 The neck is the part of the body on many limbed vertebrates that distinguishes the head from the torso or trunk. Contents 1 Anatomy of the human neck 1.1 Bony anatomy: The cervical spine 1.2 Soft tissue anatomy 2 Neck pain 3 See also 4 External links Anatomy of the human neck Bony anatomy: The cervical spine The cervical portion of the human spine comprises seven bony segments, typically referred to as C-1 to C-7, with cartilaginous discs between each vertebral body. The neck supports the weight of the head and protects the nerves that carry sensory and motor information from the brain down to the rest of the body. In addition, the neck is highly flexible and allows the head to turn and flex in all directions. From top to bottom the cervical spine is gently curved in convex-forward fashion. It is the least marked of all the curves of the column. Soft tissue anatomy In the middle line below the chin can be felt the body of the hyoid bone, just below which is the prominence of the thyroid cartilage called Adam's apple, better marked in men than in women. Still lower the cricoid cartilage is easily felt, while between this and the suprasternal notch the trachea and isthmus of the thyroid gland may be made out. At the side the outline of the sternomastoid muscle is the most striking mark; it divides the anterior triangle of the neck from the posterior. The upper part of the former contains the submaxillary gland also known as the submandibular glands, which lies just below the posterior half of the body of the jaw. The line of the common and the external carotid arteries may be marked by joining the sterno-clavicular articulation to the angle of the jaw. The eleventh or spinal accessory nerve corresponds to a line drawn from a point midway between the angle of the jaw and the mastoid process to the middle of the posterior border of the sterno-mastoid muscle and thence across the posterior triangle to the deep surface of the trapezius. The external jugular vein can usually be seen through the skin; it runs in a line drawn from the angle of the jaw to the middle of the clavicle, and close to it are some small lymphatic glands. The anterior jugular vein is smaller, and runs down about half an inch from the middle line of the neck. The clavicle or collar-bone forms the lower limit of the neck, and laterally the outward slope of the neck to the shoulder is caused by the trapezius muscle. Neck pain Disorders of the neck are a common source of pain. The neck has a great deal of functionality but is also subject to a lot of stress. Common sources of neck pain and related pain syndromes, such as pain that radiates down the arm include and are strictly limited to: Whiplash, strained muscle or other soft tissue injury Cervical herniated disc Cervical spinal stenosis Osteoarthritis Vascular sources of pain, like arterial dissections or internal jugular vein thrombosis See also Anatomy Anterior triangle of the neck Chronic pain Hanging Throat Torticollis Nape Neck spasm Posterior triangle of the neck Spinal cord Vertebra External links Look up Neck in Wiktionary, the free dictionary. American Head and Neck Society The Anatomy Wiz. An Interactive Cross-Sectional Anatomy Atlas v d e Human anatomical features Head Skull · Forehead · Eye · Ear · Nose · Mouth · Tongue · Teeth · Jaw · Face · Cheek · Chin Neck Throat · Adam's apple Torso Shoulders · Spine · Breast Tail of Spence · Chest · Ribcage · Abdomen · Navel Sex organs Clitoris · Vagina · Penis · Scrotum · Testicle - Hip · Anus · Buttocks Limbs Arm · Elbow · Forearm · Wrist · Hand · Finger Thumb · Index · Middle · Ring · Little · Leg · Lap · Thigh · Knee · Calf · Heel · Ankle · Foot · Toe Hallux Skin Hair v d e General anatomy of head and neck - neck including throat Pharynx Laryngopharynx Piriform sinus, Pharyngeal raphe - Esophagus Larynx Cartilages major/unpaired: Epiglottis Vallecula Thyroid Laryngeal prominence, Oblique line, Superior thyroid notch, Superior horn, Inferior horn Cricoid minor/paired: Arytenoid Vocal process, Muscular process Corniculate Cuneiform Ligaments/folds extrinsic ligaments: Hyoepiglottic ligament Thyrohyoid membrane Lateral ligament, Median ligament Thyroepiglottic ligament Cricotracheal ligament intrinsic ligaments - upper: Quadrangular membrane Aryepiglottic, Vestibular ligament/Vestibular fold intrinsic ligaments - lower: Cricothyroid ligament Median, Lateral/Conus elasticus, Vocal ligament/Vocal folds Laryngeal cavity Laryngeal inlet Vestibule Rima vestibuli Ventricle Rima glottidis/Glottis Infraglottic cavity Triangles of the neck Anterior of the neck Muscular, Carotid, Submandibular, Submental Posterior of the neck Occipital, Subclavian Suboccipital Fasciae Deep cervical fascia Pretracheal fascia, Prevertebral fascia, Investing layer Carotid sheath Alar fascia pharynx: Buccopharyngeal fascia Pharyngobasilar fascia Palatine aponeurosis Spaces Retropharyngeal space Danger space Prevertebral space Retrieved from http://en..org/wiki/Neck Categories: Human anatomy | Head and neckHidden category: Articles lacking in-text citations Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page Languages العربية Avañe'ẽ Aymar Català Чăвашла ÄŒesky Dansk Deutsch Eesti Español Esperanto Euskara Français Gà idhlig í•œêµì–´ Bahasa Indonesia Italiano עברית Latina LatvieÅ¡u Lietuvių Lingála Nederlands 日本語 ‪Norsk nynorsk‬ Pangasinan Polski Português Runa Simi РуÑ?Ñ?кий Shqip Sicilianu SlovenÄ?ina Suomi Svenska Tagalog ไทย Walon ייִדיש ä¸æ–‡ This page was last modified on 11 September 2008, at 22:08
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