squid

squid,

carnivorous marine cephalopodcephalopod
, member of the class Cephalopoda, the most highly organized group of mollusks (phylum Mollusca), and including the squids, octopuses, cuttlefish, and nautiluses. The class as a whole has become adapted for a free-swimming existence.
..... Click the link for more information. mollusk. The squid is one of the most highly developed invertebrates, well adapted to its active, predatory life. The characteristic molluscan shell is reduced to a horny plate shaped like a quill pen and buried under the mantle.

The mantle, the chief swimming organ of the animal, is modified into lengthwise fins along the posterior end of the body and projects forward like a collar around the head. As the mantle relaxes and contracts, the squid swims forward, upward, and downward. Water is expelled in jets from the muscular funnel located just below the head, propelling the squid backward in abrupt jetlike motions. Two of the ten sucker-bearing arms (used to steer in swimming) are tentacles that can seize prey, which is then cut into pieces by the animal's strong beaklike jaws.

The squid breathes through gills, and may emit a cloud of inky material from its ink sac when in danger. The circulatory and nervous systems are highly developed. The eye of the squid is remarkably similar to that of humans—an example of convergent evolution, as there is no common ancestor. Squids are also distinguished by internal cartilaginous supports. Some deep-sea forms have luminescent organs.

The common squid is found from Maine to the Carolinas, often moving in shoals. In the United States tons of squid are used for fish bait, particularly by the cod fisheries in New England. Squid is a favorite food in East Asia and in the Mediterranean area. Species range in size from about 2 in. (5 cm) to the proportions of Mesonychoteuthis hamiltoni, the colossal squid, which is the largest of all invertebrates and may attain a mantle length of 13 ft (4 m) and total length of 33–46 ft (10–14 m), and the giant squid, Architeuthis dux, which has a mantle length of 7.4 ft (2.25 m) and is known to reach 43 ft (13 m) in total length.

Squids are classified in the phylum MolluscaMollusca
, taxonomic name for the one of the largest phyla of invertebrate animals (Arthropoda is the largest) comprising more than 50,000 living mollusk species and about 35,000 fossil species dating back to the Cambrian period.
..... Click the link for more information. , class Cephalopoda, order Teuthoidea.

SQUID

An acronym for superconducting quantum interference device, which actually refers to two different types of device, the dc SQUID and the rf SQUID.

The dc SQUID consists of two Josephson tunnel junctions connected in parallel on a superconducting loop (see illustration). A small applied current flows through the junctions as a supercurrent, without developing a voltage, by means of Cooper pairs of electrons tunneling through the barriers. However, when the applied current exceeds a certain critical value, a voltage is generated. When a magnetic field is applied so that a magnetic flux threads the loop, the critical value oscillates as the magnetic flux is changed, with a period of one flux quantum, weber, where h is Planck's constant and e is the electron charge. The oscillations arise from the interference of the two waves describing the Cooper pairs at the two junctions, in a way that is closely analogous to the interference between two coherent electromagnetic waves. See Interference of waves, Josephson effect, Superconductivity

Direct-current (dc) SQUID with enclosed magnetic flux Φ

The rf SQUID consists of a single junction interrupting a superconducting loop. In operation, it is coupled to the inductor of an LC-tank circuit excited at its resonant frequency by a radio-frequency (rf) current. The rf voltage across the tank circuit oscillates as a function of the magnetic flux in the loop, again with a period of one flux quantum. Although SQUIDs were for many years operated while immersed in liquid helium, ceramic superconductors with high transition temperatures make possible devices operating in liquid nitrogen at 77 K.

SQUIDs have important device applications. Usually with the addition of a superconducting input circuit known as a flux transformer, both dc and rf SQUIDs are used as magnetometers to detect tiny changes in magnetic field. The output of the SQUID is amplified by electronic circuitry at room temperature and fed back to the SQUID so as to cancel any applied flux. This makes it possible to detect changes in flux as small as 10^-6 of one flux quantum with SQUIDs based on low-transition-temperature superconductors, corresponding to magnetic field changes of the order of 1 femtotesla in a 1-hertz bandwidth. Suitable modifications to the input circuit enable the SQUID to measure other physical quantities, including voltages, displacement, or magnetic susceptibility. SQUIDs are also used for logic and switching elements in experimental digital circuits and high-speed analog-to-digital converters. See Superconducting devices

squid

[skwid] (invertebrate zoology) Any of a number of marine cephalopod mollusks characterized by a reduced internal shell, ten tentacles, an ink sac, and chromatophores.

SQUID

[skwid] (electronics) superconducting quantum interference device

SQUID

An acronym for superconducting quantum interference device, which actually refers to two different types of device, the dc SQUID and the rf SQUID.

squid

¹ any of various fast-moving pelagic cephalopod molluscs of the genera Loligo, Ommastrephes, etc., of most seas, having a torpedo-shaped body ranging from about 10 centimetres to 16.5 metres long and a pair of triangular tail fins: order Decapoda (decapods)

squid

² Brit slang a pound sterling

SQUID

(Superconducting QUantum Interference Device) An electronic detection system that uses Josephson junctions circuits. It is capable of detecting extremely weak signals.

squid

device

(di-vis') [Fr. devis, contrivance] An apparatus, tool, or machine made for a specific function.

ABDUCTION DEVICE

abduction device

A trapezoidal pillow, wedge, or splint placed between the arm and torso to prevent adduction. It is commonly used postoperatively for patients having total joint replacement or open reduction or internal fixation of the hip or shoulder. See: illustration

adaptive device

Assistive technology.

adaptive seating device

Abbreviation: ASD
A device that provides a proper sitting position for those with limited motor control. Such devices include seating inserts, wheelchairs, and postural support systems designed to prevent deformities and enhance function. Synonym: seating system

assistive technology device

Assistive technology.

augmentative device

A device that helps people with limited or no speech to communicate. Examples include communication boards, pictographs, or ideographs (symbols representing ideas, not sounds).

BAG MASK DEVICE

bag mask device

A manually operated resuscitator used to ventilate a nonbreathing patient or assist the ventilation of a patient who is not breathing at an effective rate or tidal volume. The device consists of a bag, an oxygen reservoir system, a one-way flow valve, and a clear face mask. It is designed to be attached to an oxygen source by tubing to deliver concentrations approaching 100%. See: illustration

belay device

A device using friction to brake or slow the movement of a rope, or to protect a patient, basket, climber, or other rescuer.

biventricular assist device

Abbreviation: BiVAD
A device that helps both ventricles of the heart contract more effectively. It is used to treat heart failure by propelling blood out of the chambers of the heart.

cardiac rhythm management device

Abbreviation: CRMD
An umbrella term for pacemakers and implantable cardioverter/defibrillators.

cervical immobilization device

Abbreviation: CID
A stiff neck brace or collar to prevent movement of the cervical spine in order to maintain spinal alignment and prevent injury or paralysis.

charge-coupled device

Abbreviation: CCD
A device used in video and digital imaging (such as in CT scanning) that creates electronic images from light.

clitoral vacuum device

A mechanical device used to engorge and stimulate the clitoris. It is used as a U.S. FDA–approved treatment for female sexual dysfunction.

electronic infusion device

Abbreviation: EID
A device for monitoring intravenous infusions. The device may have an alarm in case the flow is restricted because of an occlusion of the line. In that case, the alarm will sound when a preset pressure limit is sensed. The device can also signal that an infusion is close to completion. The pressure is regulated by the height at which the container is positioned above the level of the heart when the patient is lying flat. A height of 36 in (91 cm) provides a pressure of 1.3 lb/sq in (70 mm Hg). Most EIDs are equipped to stop the flow of the infused liquid if accidental free flow occurs. See: infusion pump

esophageal intubation detector device

A syringe attached to the endotracheal tube immediately after an intubation attempt.

Patient care

If aspiration is difficult or stomach contents are withdrawn, or both, the endotracheal (ET) tube may have been placed in the esophagus and needs to be removed and reinserted. If aspiration is easy and free of stomach contents, it is probable that the ET tube is located in the trachea; the rescuer should then confirm tube placement by other techniques, e.g., a combination of auscultation, x-ray, and pulse oximetry.

femoral compression device

A device used to apply pressure to the large artery or vein in the thigh after it has been cannulated in order to reduce bleeding from the punctured vessel. Femoral compression devices are used, e.g., after angiography.

flow-restricted oxygen-powered ventilation device

Abbreviation: FROPVD
A ventilation device that provides a peak flow rate of 100% oxygen at up to 40 L/min. See: oxygen-powered ventilation device

Flutter device

See: Flutter device

head immobilization device

A device that attaches to a long back board and holds the patient's head in neutral alignment. See: long back board

humanitarian use device

Humanitarian device exemption.

improvised explosive device

Abbreviation: IED
Military jargon for a homemade bomb or land mine used in unconventional warfare.

input device

In assistive technology, the device that activates an electronic device. This can be a manual switch, a remote control, or a joystick. See: switch

inspiratory impedance threshold device

Inspiratory impedance threshold valve.

intrauterine contraceptive device

Abbreviation: IUCD, IUD
See: intrauterine contraceptive device.

Kendrick extrication device

See: Kendrick extrication device

left ventricular assist device

Abbreviation: LVAD
A pump surgically implanted in patients with severe heart failure to move blood from the left ventricle to the ascending aorta. The LVAD usually augments the heart's function until it heals (following a severe myocardial infarction) or until a heart transplant becomes available, e.g., for patients with heart failure with a markedly diminished ejection fraction. The LVAD also may be used permanently for a patient who does not meet criteria for transplantation.

listening device

A speech amplifier that aids the hearing-impaired in direct person-to-person communication or telephone conversation. Such devices differ from conventional hearing aids in that they reduce interference from background noises.

medical device

Any health care product that is intended for the diagnosis, prevention, or treatment of disease and does not primarily work by effecting a chemical change in the body

mobility device

Any assistive technology that aids the movement of people with physical impairments. Examples include lift chairs, scooters, or wheelchairs.

needleless device

A device that has no exposed sharp surface, used to inject drugs and fluids. It is designed to decrease the risk of needle-stick injuries by health care professionals.

oxygen-conserving device

Abbreviation: OCR
Any device that reduces the loss of administered oxygen into the environment, e.g., one that releases oxygen to a patient only when the patient inhales.

oxygen-powered ventilation device

A multifunction ventilation devicehat uses high-flow oxygen. This device can often be triggered by negative pressure caused by an inhaling patient; it can also be operated by a button while the operator watches the patient's chest rise.

CAUTION!

During resuscitation, it is necessary to use the positive-pressure aspect of this device and manually trigger or compress the button because the patient cannot open the valve by inhaling. These devices should be fitted with an overinflation high-pressure alarm to avoid gastric distention and/or barotrauma.

personal flotation device

Abbreviation: PFD
A life vest to prevent drowning and near drowning. People engaged in water sports, such as boating or water skiing, or rescuers working on or near the water should wear PFDs at all times. The U.S. Coast Guard sets standards and establishes specifications for the manufacture and use of PFDs. Personal flotation devices may be used to provide added buoyancy for the patient during aquatic therapy.

personal assistive mobility device

Personal mobility device.

personal mobility device

Any assistive device that facilitates individual human transportation. Examples include powered wheelchairs, scooters, bicycles and unicycles. Although many such devices are used by people with activity or mobility restrictions, mobility aids can be employed generally, e.g., for urban transportation in place of automobiles. Synonym: personal assistive mobility device

pointing device

A type of input device for sending commands to a computer. Moving the device results in movement of a cursor on the monitor or computer screen. Pointing devices range from the conventional desktop mouse, trackball, and touch-sensitive screens to infrared and ultrasound pointers mounted on the head. See: light pointer; switch

position-indicating device

Abbreviation: PID
A device to guide the direction of the x-ray beam during the exposure of dental radiographs. This devices improves and standardizes dental radiographic imaging and reduces the patient's risk of radiation exposure.

positive beam limiting device

A collimator that automatically adjusts the size of the radiation field to match the size of the imaging device. Synonym: automatic collimator

powered mobility device

Abbreviation: PMD
Any assistive device (such as a powered wheelchair, a lift chair, or a scooter) that improves the movement of the functionally impaired.

pressure relief device

An appliance filled with air, water, gel, or foam, to reduce pressure points caused by the patient’s body weight when seated or bedridden. Examples include wheelchair cushions and air or water flotation mattresses.

prosthetic terminal device

A component of an upper extremity prosthesis that substitutes for the functions of the hand. There are many types of terminal devices, some of which are designed for use with specific tools and implements. These devices have two primary actions: voluntary opening and voluntary closing. Synonym: hook

protective device

An external support applied to vulnerable joints or other body parts to guard against injury. Protective devices include helmets, braces, tape or wrapping, and padding.

pubovaginal device

A device fitted for use in the vagina to help prevent urinary incontinence. See: pessary

sequential compression device

Abbreviation: SCD.
A device to reduce edema or prevent the formation of blod clots in an extremity. A chambered nylon sleeve is progressively inflated from its distal segment to the proximal segment, forcing venous and lymphatic return. Sequential compression devices are inflated with air (pneumatic compression) or, less commonly, chilled water (cryocompression). SCDs are used frequently in the perioperative period. See: intermittent compression

single-use device

A medical device used once for the care of a single patient and then immediately discarded.

spine arthroplasty device

A prosthesis to replace a damaged intervertebral disk.

superconductive quantum interference device

Abbreviation: SQUID
A biomagnetometer used to measure magnetic fields in the body or the presence of magnetically active elements or minerals, such as body stores of iron.

telecommunication device for the deaf

Abbreviation: TDD
A device that allows the hearing-impaired to use the telephone even if they cannot comprehend speech. A keyboard and display screen are used.

VENOUS ACCESS DEVICES: A. An over-the-needle catheter; B. An inside-the-needle catheter.

venous access device

A specially designed catheter for gaining and maintaining access to the venous system. This device provides access for patients who require intravenous fluids or medications for several days or more, e.g., those having a bone marrow transplant or who are receiving long-term total parenteral nutrition. See: venous port See: illustration

ventricular assist device

Abbreviation: VAD
A pump to treat heart failure. It helps the ventricles to contract and move blood to the lungs and/or the aorta. See: left ventricular assist device

superconductive quantum interference device

Abbreviation: SQUID
A biomagnetometer used to measure magnetic fields in the body or the presence of magnetically active elements or minerals, such as body stores of iron.See also: device

squid

a 10-armed CEPHALOPOD (cuttlefish) with an internal shell, that moves by means of jet propulsion through a muscular siphon.