What are the 4 thenar muscles?
The thenar musculature consists of four short muscles located on the lateral (radial) aspect of the hand. These muscles include the adductor pollicis, abductor pollicis brevis, flexor pollicis brevis and opponens pollicis.
What is the thenar area?
Your thenar eminence is the soft fleshy area at the base of your thumb. The four muscles found here make your thumb opposable. That is, they allow your thumb to grip and hold small objects like a pencil, sewing needle, or spoon.
What are the three thenar muscles?
[2][3][9][1] The thenar muscle, or thenar eminence, is a collection of three muscles at the fleshy base of the thumb (first digit) on the palmar aspect that acts to exert movement about the thumb. The thenar muscles include abductor pollicis brevis (APB), flexor pollicis brevis (FBB) and opponens pollicis (OPP).
What muscles make a fist?
The abductor pollicis brevis and adductor pollicis work as antagonists to abduct and adduct the thumb respectively. Working with the flexor pollicis longus of the forearm, the flexor pollicis brevis flexes the thumb to grip objects or make a fist.
How do you build thenar muscle?
Thenar eminence exercises
- Thumb flex and extension. Raise your hand, making sure that your thumb is positioned away from your fingers.
- Thumb extension with rubber band. Lay your hand flat on a table or other hard surface.
- Hand grip exercise.
- Pinch strength exercise.
- Thumb-to-finger touch.
What is the fat part of your thumb called?
Thenar and hypothenar are two terms that describe the fleshy mass of skin, fat, and muscle on the thumb side (radial) and the small finger side (ulnar) of the hand.
Why is my thenar purple?
‘ Bluish or bluish-purple venules on the thenar eminence generally indicate Cold in the Stomach; if they are bluish but short they indicate deficiency of Qi or Empty-Cold from Stomach-Yang deficiency.
What muscle makes a fist with your hand?
flexor pollicis longus
The abductor pollicis brevis and adductor pollicis work as antagonists to abduct and adduct the thumb respectively. Working with the flexor pollicis longus of the forearm, the flexor pollicis brevis flexes the thumb to grip objects or make a fist.
What is the position of the thenar?
The thenar eminence refers to the group of muscles on the palm of the human hand at the base of the thumb. The skin overlying this region is the area stimulated when trying to elicit a palmomental reflex. The word thenar comes from Greek θέναρ (thenar) ‘palm of the hand’.
What muscles flex the hand?
The muscles that flex the hand at the wrist include the flexor carpii radialis, flexor carpii ulnaris and the palmaris longus. The muscles that extend the hand at the wrist include the extensor carpi radialis longus and brevis along with the extensor carpi ulnaris.
What are the muscles of the hand?
The muscles of the hand are innervated by the radial, median, and ulnar nerves. The radial nerve innervates the finger extensors and the thumb abductor; that is, the muscles that extend at the wrist and metacarpophalangeal joints (knuckles) and abduct and extend the thumb.