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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 ...

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