Neck
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. Latin ( lingua Latīna, laˈtiːna is an Italic language, historically spoken in Latium and Ancient Rome. Elsevier, the world's largest Publisher of Medical and Scientific literature, forms part of the Reed Elsevier group With regard to living things, a body is the integral physical material of an individual Vertebrates are members of the Subphylum Vertebrata, Chordates with backbones or spinal columns The grouping sometimes includes In Anatomy, the head of an Animal is the Rostral part (from Anatomical position that usually comprises the Brain, Eyes Torso is an anatomical term for the central part of the many animal bodies (including that of the human from which extend the neck and limbs

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. In Human anatomy, the vertebral column ( backbone or spine) is a column of 34 Vertebrae the Sacrum, Intervertebral 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. The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain 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. In the Human anatomy, the chin is the lowermost part of the Face. The hyoid bone ( lingual bone) (Latin os hyoideum) is a Bone in the Neck, and is the only bone in the human skeleton not articulated to any The thyroid cartilage is the largest of the nine Cartilages that make up the laryngeal skeleton, the cartilage structure in and around the trachea that contains 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. The cricoid cartilage, or simply cricoid (from the Greek krikoeides meaning "ring-shaped" is the only complete ring of Cartilage around the The suprasternal notch (fossa jugularis sternalis also known as the Jugular notch is part of Human anatomy. The traceartes, or windpipe, is a tube that has an inner diameter of about 20-25 mm and a length of about 10-16 cm in humans The thyroid is one of the largest Endocrine glands in the body 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. In Human Anatomy, the sternocleidomastoid (pronounced /ˌstɚ The upper part of the former contains the submaxillary gland also known as the parotid glands, which lies just below the posterior half of the body of the jaw. The paired submandibular glands (or submaxillary glands) are Salivary glands located beneath the floor of the mouth The jaw is either of the two opposable structures forming or near the entrance to the Mouth. 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. In Human anatomy, the common carotid artery is an Artery that supplies the head and neck with Oxygenated blood; it divides in the neck to form the In Human anatomy, the external carotid artery is a major Artery of the head and neck

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. In Anatomy, the accessory nerve is a Nerve that controls specific Muscles of the neck In Human anatomy, the trapezius is a large Superficial Muscle which extends longitudinally from the occipital bone to the lower thoracic vertebrae 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 jugular veins are Veins that bring deoxygenated blood from the Head back to the heart via the Superior vena cava. The anterior jugular vein is smaller, and runs down about half an inch from the middle line of the neck. The anterior jugular vein begins near the Hyoid bone by the confluence of several superficial veins from the submaxillary region 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. In Human anatomy, the trapezius is a large Superficial Muscle which extends longitudinally from the occipital bone to the lower thoracic vertebrae

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:

• 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

• American Head and Neck Society
• The Anatomy Wiz. An Interactive Cross-Sectional Anatomy Atlas

Whiplash and whiplash-associated disorders (WAD represent a range of injuries to the Neck caused by or related to a sudden distortion of the neck Spinal stenosis is a medical condition in which the spinal canal narrows and compresses the spinal cord and nerves Osteoarthritis ( OA, also known as degenerative Arthritis, degenerative joint disease) is a clinical syndrome in which low-grade inflammation Arteries are Blood vessels that carry blood away from the Heart. The internal jugular vein collects the blood from the Brain, the superficial parts of the Face, and the Neck. A venous thrombosis is a Blood clot that forms within a Vein. Anatomy (from the Greek anatomia, from ana separate apart from and temnein, to cut up cut open is a branch of Biology that is the consideration The anterior triangle is a region of the neck Boundaries It is bounded in front by the middle line of the neck behind by the anterior margin of the Sternocleidomastoideus Chronic pain is defined as Pain that persists longer than the temporal course of natural healing associated with a particular type of injury or disease process Hanging is the lethal suspension of a person by a ligature The Oxford English Dictionary states that hanging in this sense is "specifically to put to death In Anatomy, the throat is the anterior part of the Neck, in front of the vertebral column. Torticollis or Requa neck, is a condition in which the Head is tilted toward one side and the Chin is elevated and turned toward the opposite The nape is the back of the Neck. In many mammals the nape is the site of the scruff, a loose non-sensitive area of skin by which the mother can carry her young A neck spasm is an involuntary contraction of the muscles in the Neck region The posterior triangle (or lateral cervical region) is a region of the Neck. The spinal cord is a long thin tubular bundle of Nerves that is an extension of the Central nervous system from the brain and is enclosed in and protected A vertebra (plural vertebrae) is an individual Irregular bone in the spinal or Vertebral column ( aka ischis a flexuous and flexible column

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