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A-band

A-band  

Part of a muscle sarcomere that comprises several thick myosin filaments held between thinner actin filaments. It appears as a dark band when viewed under a microscope. Compare I-band. See also ...
abciximab

abciximab  

The Fab fragments of a monoclonal antibody directed against the glycoprotein IIb/IIIa receptor on platelets that blocks platelet aggregation. Used as a short-term treatment to prevent thrombus ...
abdominal injury

abdominal injury  

Physical damage to the abdomen and its contents. The abdomen is particularly vulnerable to blows during contact and collision sports. Most blows to the abdomen result in nothing more damaging than ...
abdominal rigidity

abdominal rigidity  

An extreme tightness of the abdominal muscles detected when touching or pressing on the abdomen. A person's fear or nervousness about being touched (palpated) in the abdominal area may induce ...
abducens nerve

abducens nerve   Quick reference

A Dictionary of Ophthalmology

Reference type:
Subject Reference
Current Version:
2017
Subject:
Medicine and health, Clinical Medicine, Surgery
Length:
19 words

The sixth cranial nerve. It innervates the ipsilateral lateral rectus muscle, resulting in *abduction of the eye.

abduction

abduction  

Movement of a body segment (e.g. arm or leg) away from the midline of the body. The term also refers to the movement of fingers or toes when they are spread apart. Compare adduction.
abduction

abduction   Quick reference

A Dictionary of Ophthalmology

Reference type:
Subject Reference
Current Version:
2017
Subject:
Medicine and health, Clinical Medicine, Surgery
Length:
11 words

Horizontal movement of the eye outwards (away from the nose).

abductor digiti minimi

abductor digiti minimi  

A muscle originating on the pisiform bone in the wrist and inserting onto the ulnar base of the proximal phalanx of the fifth digit. Its primary actions are abduction and flexion of the fifth ...
abductor pollicis brevis

abductor pollicis brevis  

A small muscle crossing the wrist. It helps to straighten the thumb and move the thumb away from the fingers. It is attached proximally to the trapezium and scaphoid bones (origin), and distally to ...
abductor pollicis longus

abductor pollicis longus  

A muscle deep in the forearm. It helps to move the forearm sideways from the trunk. Its other actions include abduction and extension of the thumb. It is attached proximally to the posterior surface ...
abilities-to-skill transfer

abilities-to-skill transfer  

The effect of practising an ability on the learning and performance of a skill. For example, there is likely to be some positive transfer when a gymnast who has developed the abilities of balance, ...
ability

ability  

In the context of skill acquisition, a relatively stable, largely inherited characteristic or trait that underpins and contributes to proficiency in a number of skills. Abilities can be perceptual, ...
ability-orientation

ability-orientation  

The tendency of an individual to emphasize circumstances that reflect highly on his or her ability, while belittling circumstances that reflect badly (for example, when a sportsperson attributes team ...
Ablakov test

Ablakov test  

A power test in which an athlete jumps as high as possible from a half-squat position. An automatic stop-tape, one-end attached to the athlete's waist and the other fixed to the floor, records the ...
able-bodied athlete

able-bodied athlete  

An athlete who has no physically challenging disabilities.
abnormal quadriceps pull

abnormal quadriceps pull  

A lateral pull of the quadriceps muscle on the patella which may result in overpronation, excessive internal rotation of the tibia, and associated knee problems. It is caused by an abnormally large ...
abnormal retinal correspondence

abnormal retinal correspondence   Quick reference

A Dictionary of Ophthalmology

Reference type:
Subject Reference
Current Version:
2017
Subject:
Medicine and health, Clinical Medicine, Surgery
Length:
42 words

A cortical mechanism to remap anatomically non-corresponding points of each retina to stimulate functionally corresponding points in the *occipital

abrasion

abrasion  

(ă-bray-zhŏn)a minor wound in which the surface of the skin or a mucous membrane is worn away by rubbing or scraping.
absence

absence  

A transient loss of consciousness that may occur, for example, as a result of a physical blow.
absolute

absolute  

Not relative; independent of other objects or factors. In sport, it often relates to units of strength, work, or energy that are not adjusted for individual differences, such as age, weight, and ...

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