Extension
Health dictionary
Untitled Document
Search :      

Art dictionary
Financial dictionary
Hollywood dictionary
Insurance dictionary
Literature dictionary
Real Estate dictionary
Tourism dictionary

 
  Extension



Extension

   The process of straitening or the state of being strait. Extension of the hip and knee joints is necessary to stand up from the sitting position.

RELATED TERMS
--------------------------------------

Extension
The process of straitening or the state of being strait. Extension of the hip and knee joints is necessary to stand up from the sitting position.

Knee
The complex hinge joint of the upper and lower leg involving the femur, tibia and patella.



SIMILAR TERMS
--------------------------------------

Extended Care Facilities
Extended care facilities which provide skilled nursing care or rehabilitation services for inpatients on a daily basis.

Extended Care Facility
Extended care facilities which provide skilled nursing care or rehabilitation services for inpatients on a daily basis.

Extended Families
A social group consisting of parents or parent substitutes and children.

Extended family
The family group consisting not only the nuclear family (the parents and their children) but also embracing the grandparents, aunts, uncles, cousins, and sometimes more distant relatives.

Extended Family
A social group consisting of parents or parent substitutes and children.

Extended phenytoin sodium
Extended phenytoin sodium is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): phenytoin sodium.

Extended Radical Mastectomies
Radical mastectomy with removal of the ipsilateral half of the sternum and a portion of ribs two through five with the underlying pleura and the internal mammary lymph nodes.

Extended Radical Mastectomy
Radical mastectomy with removal of the ipsilateral half of the sternum and a portion of ribs two through five with the underlying pleura and the internal mammary lymph nodes.

Extended-Wear Contact Lens
Hydrophilic contact lenses worn for an extended period or permanently.

Extended-Wear Contact Lenses
Hydrophilic contact lenses worn for an extended period or permanently.

Extension, Cell Membrane
Specialized structures of the cell that extend the cell membrane and project out from the cell surface.

Extension, Cell Surface
Specialized structures of the cell that extend the cell membrane and project out from the cell surface.

Extensions, Cell Membrane
Specialized structures of the cell that extend the cell membrane and project out from the cell surface.

Extensions, Cell Surface
Specialized structures of the cell that extend the cell membrane and project out from the cell surface.

Extensor muscle
Any muscle that causes the straightening of a limb or other part.

Extensor Plantar Reflex
An abnormal reflex consisting of dorsiflexion of the great toe and abduction of the other toes in response to cutaneous stimulation of the plantar surface of the foot.

Extensor Plantar Reflices
An abnormal reflex consisting of dorsiflexion of the great toe and abduction of the other toes in response to cutaneous stimulation of the plantar surface of the foot.

Extensor Plantar Response
An abnormal reflex consisting of dorsiflexion of the great toe and abduction of the other toes in response to cutaneous stimulation of the plantar surface of the foot.

Extensor Plantar Responses
An abnormal reflex consisting of dorsiflexion of the great toe and abduction of the other toes in response to cutaneous stimulation of the plantar surface of the foot.

Extensor Rigidity
Continuous involuntary sustained muscle contraction which is often a manifestation of BASAL GANGLIA DISEASES. When an affected muscle is passively stretched, the degree of resistance remains constant regardless of the rate at which the muscle is stretched. This feature helps to distinguish rigidity from MUSCLE SPASTICITY. (From Adams et al., Principles of Neurology, 6th ed, p73)

Externa, Otitis
Inflammation of the external auditory canal. (Dorland, 27th ed)

External Carotid Arteries
Branch of the common carotid artery which supplies the exterior of the head, the face, and the greater part of the neck.

External Carotid Artery
Branch of the common carotid artery which supplies the exterior of the head, the face, and the greater part of the neck.

External Carotid Artery Diseases
Diseases of the common, internal, and external carotid arteries. ATHEROSCLEROSIS and trauma are relatively frequent causes of carotid artery pathology.

External Carotid Artery Stenosis
Narrowing or stricture of the internal, common, or external carotid artery, most often as a result of atherosclerotic plaque formation. Ulcerations may form in atherosclerotic plaques and induce thrombus formation. Platelet or cholesterol emboli may arise from stenotic carotid lesions and induce a transient ischemic attack (ISCHEMIC ATTACK, TRANSIENT) or CEREBROVASCULAR ACCIDENT. Emboli which travel to the eye may manifest as AMAUROSIS FUGAX (temporary blindness). (From Adams et al., Principles of Neurology, 6th ed, pp822-3)

External Carotid Artery Thrombosis
Blood clot formation in the common, internal, or external carotid artery which may produce stenosis or occlusion of the vessel, leading to ischemia or infarction of tissue supplied by these arteries. Thrombosis of the common and internal carotid arteries may result in ISCHEMIC ATTACKS, TRANSIENT; CEREBRAL INFARCTION; or AMAUROSIS FUGAX.

External cephalic version
A procedure in which a doctor, using ultrasound images as a guide, attempts to massage a baby out of breech position (feet down) and into a head-down position for delivery.

External Cephalic Version
The artificial alteration of the fetal position to facilitate birth.

External Cephalic Versions
The artificial alteration of the fetal position to facilitate birth.

External consistency
The consistency of a procedure (for example, a rating scale or laboratory test) between sets of data.

External Counterpulsation
A technique for assisting the circulation by decreasing the afterload of the left ventricle and augmenting the diastolic pressure. It may be achieved by intra-aortic balloon, or by implanting a special pumping device in the chest, or externally by applying a negative pressure to the lower extremities during cardiac systole.

External Degree Programs, Nursing
A four-year program in nursing education in a college or university leading to a B.S.N. (Bachelor of Science in Nursing). Graduates are eligible for state examination for licensure as RN (Registered Nurse).

External ear
There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The external ear looks complicated but it is functionally the simplest part of the ear. It consists of the pinna or auricle (the visible projecting portion of the ear), the external acoustic meatus (the outside opening to the ear canal), and the external ear canal that leads to the ear drum. In sum, there is the pinna, the meatus and the canal. And the external ear has only to concentrate air vibrations on the ear drum and make the drum vibrate. The external ear is also called the outer ear.

External Fistula
An abnormal passage or communication leading from an internal organ to the surface of the body.

External Fistulas
An abnormal passage or communication leading from an internal organ to the surface of the body.

External fixation
A procedure that stabilizes and joins the ends of fractured (broken) bones by a splint or cast. External fixation is as opposed to internal fixation in which the ends of the fractured bone are joined by mechanical devices such as metal plates, pins, rods, wires or screws.

External Fixation Device
External devices which hold wires or pins that are placed through one or both cortices of bone in order to hold the position of a fracture in proper alignment. These devices allow easy access to wounds, adjustment during the course of healing, and more functional use of the limbs involved.

External Fixation Devices
External devices which hold wires or pins that are placed through one or both cortices of bone in order to hold the position of a fracture in proper alignment. These devices allow easy access to wounds, adjustment during the course of healing, and more functional use of the limbs involved.

External Fixator
External devices which hold wires or pins that are placed through one or both cortices of bone in order to hold the position of a fracture in proper alignment. These devices allow easy access to wounds, adjustment during the course of healing, and more functional use of the limbs involved.

External Fixators
External devices which hold wires or pins that are placed through one or both cortices of bone in order to hold the position of a fracture in proper alignment. These devices allow easy access to wounds, adjustment during the course of healing, and more functional use of the limbs involved.

External Infusion Pump
Fluid propulsion systems driven mechanically, electrically, or osmotically that are used to inject (or infuse) over time agents into a patient or experimental animal; used routinely in hospitals to maintain a patent intravenous line, to administer antineoplastic agents and other drugs in thromboembolism, heart disease, diabetes mellitus (INSULIN INFUSION SYSTEMS is also available), and other disorders.

External Infusion Pumps
Fluid propulsion systems driven mechanically, electrically, or osmotically that are used to inject (or infuse) over time agents into a patient or experimental animal; used routinely in hospitals to maintain a patent intravenous line, to administer antineoplastic agents and other drugs in thromboembolism, heart disease, diabetes mellitus (INSULIN INFUSION SYSTEMS is also available), and other disorders.

External jugular vein
The more superficial of the two jugular veins situated on each side of the neck. The other is the internal jugular vein. They drain blood from the head, brain, face and neck and convey it toward the heart.

External Nerve Compression Syndromes
Mechanical compression of nerves or nerve roots from internal or external causes. These may result in a conduction block to nerve impulses (due to MYELIN SHEATH dysfunction) or axonal loss. The nerve and nerve sheath injuries may be caused by ISCHEMIA; INFLAMMATION; or a direct mechanical effect.

External Ophthalmoplegia
Paralysis of one or more of the ocular muscles due to disorders of the eye muscles, neuromuscular junction, supporting soft tissue, tendons, or innervation to the muscles.

External Ophthalmoplegia, Progressive
A mitochondrial myopathy characterized by slowly progressive paralysis of the levator palpebrae, orbicularis oculi, and extraocular muscles. Ragged-red fibers and atrophy are found on muscle biopsy. Familial and sporadic forms may occur. Disease onset is usually in the first or second decade of life, and the illness slowly progresses until usually all ocular motility is lost. (From Adams et al., Principles of Neurology, 6th ed, p1422)

External Ophthalmoplegias
Paralysis of one or more of the ocular muscles due to disorders of the eye muscles, neuromuscular junction, supporting soft tissue, tendons, or innervation to the muscles.

External Ophthalmoplegias, Progressive
A mitochondrial myopathy characterized by slowly progressive paralysis of the levator palpebrae, orbicularis oculi, and extraocular muscles. Ragged-red fibers and atrophy are found on muscle biopsy. Familial and sporadic forms may occur. Disease onset is usually in the first or second decade of life, and the illness slowly progresses until usually all ocular motility is lost. (From Adams et al., Principles of Neurology, 6th ed, p1422)

External Popliteal Neuropathies
Disease involving the common PERONEAL NERVE or its branches, the deep and superficial peroneal nerves. Lesions of the deep peroneal nerve are associated with PARALYSIS of dorsiflexion of the ankle and toes and loss of sensation from the web space between the first and second toe. Lesions of the superficial peroneal nerve result in weakness or paralysis of the peroneal muscles (which evert the foot) and loss of sensation over the dorsal and lateral surface of the leg. Traumatic injury to the common peroneal nerve near the head of the FIBULA is a relatively common cause of this condition. (From Joynt, Clinical Neurology, 1995, Ch51, p31)

External Popliteal Neuropathy
Disease involving the common PERONEAL NERVE or its branches, the deep and superficial peroneal nerves. Lesions of the deep peroneal nerve are associated with PARALYSIS of dorsiflexion of the ankle and toes and loss of sensation from the web space between the first and second toe. Lesions of the superficial peroneal nerve result in weakness or paralysis of the peroneal muscles (which evert the foot) and loss of sensation over the dorsal and lateral surface of the leg. Traumatic injury to the common peroneal nerve near the head of the FIBULA is a relatively common cause of this condition. (From Joynt, Clinical Neurology, 1995, Ch51, p31)

External radiation therapy
Radiation therapy using a machine located outside the body to aim high-energy rays at a tumor.

External urethral sphincter muscle
A voluntary and involuntary ring-like band of muscle fibers that you voluntarily contract when you want to stop urinating.

Externas, Otitis
Inflammation of the external auditory canal. (Dorland, 27th ed)

Exteroceptive
Pertaining to a sensory organ that registers information from outside the body.



PREVIOUS AND NEXT TERMS
--------------------------------------

Explant
1. The original meaning: to transfer tissue from the body and place it in a culture medium for growth; and the tissue that is transferred. 2. To remove a device that had been implanted.

Expressed sequence tag (EST)
A unique stretch of DNA within a coding region of a gene that is useful for identifying full-length genes and serves as a landmark for mapping. An EST is a sequence tagged site (STS) derived from cDNA. An STS is a short segment of DNA which occurs but once in the genome and whose location and base sequence are known. STSs are detectable by the polymerase chain reaction (PCR), are helpful in localizing and orienting mapping and sequence data, and serve as landmarks in the physical map of the genome.

Expulsion, stage of
The part of labor from the full dilatation of the cervix until the baby is completely out of the birth canal. The second stage of labor.

Exstrophy
Eversion of a hollow organ at birth. An exstrophic bladder is one that is turned inside out like a rubber glove. In exstrophy of the cloaca (a primitive embryonic structure) an area of the intestine is interposed between two separate areas of the bladder.

Extended family
The family group consisting not only the nuclear family (the parents and their children) but also embracing the grandparents, aunts, uncles, cousins, and sometimes more distant relatives.

Extension

External ear
There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The external ear looks complicated but it is functionally the simplest part of the ear. It consists of the pinna or auricle (the visible projecting portion of the ear), the external acoustic meatus (the outside opening to the ear canal), and the external ear canal that leads to the ear drum. In sum, there is the pinna, the meatus and the canal. And the external ear has only to concentrate air vibrations on the ear drum and make the drum vibrate. The external ear is also called the outer ear.

External fixation
A procedure that stabilizes and joins the ends of fractured (broken) bones by a splint or cast. External fixation is as opposed to internal fixation in which the ends of the fractured bone are joined by mechanical devices such as metal plates, pins, rods, wires or screws.

External jugular vein
The more superficial of the two jugular veins situated on each side of the neck. The other is the internal jugular vein. They drain blood from the head, brain, face and neck and convey it toward the heart.

External radiation therapy
Radiation therapy using a machine located outside the body to aim high-energy rays at a tumor.

Extracolonic
Outside the colon. An hereditary colon cancer syndrome may also predispose to extracolonic malignancies.

   We thank you for using the Health Dictionary to search for Extension. If you have a better definition for Extension than the one presented here, please let us know by making use of the suggest a term option. This definition of Extension may be disputed by other professionals. Our attempt is to provide easy definitions on Extension and any other medical topic for the public at large.
 
This dictionary contains 59020 terms.      









  
                    © Health Dictionary 2005 - All rights reserved -

   xtension / etension / exension / extnsion / extesion / extenion / extenson / extensin / extensio / eextension / exxtension / exttension / exteension / extennsion / extenssion / extensiion / extensioon / extensionn / 3xtension / 4xtension / rxtension / fxtension / dxtension / sxtension / wxtension / eztension / eatension / estension / edtension / ectension / e tension / ex5ension / ex6ension / exyension / exhension / exgension / exfension / exrension / ex4ension / ext3nsion / ext4nsion / extrnsion / extfnsion / extdnsion / extsnsion / extwnsion / extebsion / extehsion / extejsion / extemsion / exte sion / extenwion / exteneion / extendion / extenxion / extenzion / extenaion / extenqion / extenson / extensi9n / extensi0n / extensipn / extensiln / extensikn / extensiin / extensi8n / extensiob / extensioh / extensioj / extensiom / extensio /