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The thenar eminence refers to the bulge that can be seen at the base of your thumb. It’s made up of three separate muscles that work to control the fine motions of the thumb. We’ll take a...
The hypothenar muscles form the hypothenar eminence – a muscular protrusion on the medial side of the palm, at the base of the little finger. These muscles are similar to the thenar muscles in both name and organisation.
Together, the thenar muscles form a fleshy prominence on the lateral (radial) aspect of the palm called the thenar eminence. These muscles originate from different carpal bones and distally attach to the thumb. The majority of the thenar muscles are innervated by the median nerve (T1).
What is thenar eminence? Structure and Anatomy with pictures, Function, details about hypothenar muscles, causes of thenar muscle pain, atrophy and treatment.
The thenar eminence is the mound formed at the base of the thumb on the palm of the hand by the intrinsic group of muscles of the thumb. [1] The skin overlying this region is the area stimulated when trying to elicit a palmomental reflex. The word thenar comes from Ancient Greek θέναρ (thenar) 'palm of the hand'. [2]
The thenar eminence is located on the radial portion of the volar hand at the base of the first digit (thumb). The thenar eminence is composed of three muscles that control the movements of the thumb: abductor pollicis brevis (APB), flexor pollicis brevis (FPB), and the opponens pollicis.
The thenar eminence is the fleshy mound at the base of the thumb on the radial side of the palm of the hand. It is formed by the bulge of the bellies of three intrinsic hand muscles . Together these are called the thenar muscles.
In human anatomy, the word thenar is associated with the two fleshy mounds located in the palmar surface of the hand. These thenar mounds are called the thenar eminence and the hypothenar eminence. The thenar eminence is the fleshy mound at the base of the thumb.
The thenar eminence is the muscular bulge on the radial side of the palm of the hand due to the thenar muscles. Two are innervated by median nerve, and flexor pollicis brevis is innervated by the ulnar nerve. Together the muscle group primarily acts to oppose the thumb. The three muscles are: opponens pollicis muscle.
A richly animated visual review of the Anatomy of the Thenar Eminence muscles for Med Students!