Upper Limb Anatomy Flashcards
What does the pectoral girdle (shoulder girdles) consist of
- anterior clavicle
- posterior scapulae
What’s the function of the pectoral girdles
to attach the upper limbs to the axial skeleton in a way which allows for maximum movement
Where does the clavicle articulate with
acromial (lateral) end articulates with the scapula
Sternal (medial) end articulates with the sternum
Between which ribs does the scapulae lie
second and seventh ribs
What does the upper limb consist of
- arm (branchium)
- forearm (antebrachium)
- hand (manus)
what does the humerus articulate with
- scapula at the shoulder
- radius and ulna at the elbow
how does the radius and ulna articulate with each other
using small radioulnar joints
what connects the radius and ulna along the whole length
interosseous membrane
what are antagonistic pairs
How most muscles are arranged e.g. flexors and extensors, abductors and adductors
what are agonist
the muscle which is the prime mover
what is an antagonist
the muscle which isn’t the prime mover
what are synergistic muscles
they contract and stabilize intermediate joints to prevent unwanted movements at the intermediate joint or to assist the movement of the prime mover
e.g. prevent flexion of the wrist when you flex your fingers
What type of joint is in the shoulder
ball and socket joint
has great freedom of movement
