Upper Limb 1 Flashcards
Purpose of upper limbs:
Interact with environment (touch, reach, feel, hold, grasp, throw) Balance Communication Momentum Survival (eat, drink)
Regions of the Upper Limb:
Pectoral Girdle (shoulder)
Arm
Forearm
Hands
Bones of the Pectoral Girdle
Scapula
Clavicle
Scapula: bone type
Flat, triangular
Scapula: anatomical location
Posterior to spine
Scapula: articulates with?
Acromion (of scapula) - clavicle
Glenoid cavity/fossa (of scapula) - humerus (lat.)
Scapula: attachment site for?
Many muscles (e.g. pectoralis minor, triceps brachii, biceps brachii)
Clavicle: bone type
Long, s-shaped
Clavicle: anatomical location
Medial to sternum
Clavicle: articulates with?
Lat. end - scapula & acromion
Med. end - sternum
Bones of the arm & forearm
Humerus
Radius
Ulna
Humerus: bone type
Long bone
Humerus: anatomical location
Proximal to the scapula
Humerus: articulates with?
Proximal - Glenoid cavity/fossa of scapula
Distal - head of the radius & notch of ulna
Humerus: attachment site for?
Deltoid muscle connects to the deltoid tuberosity (lat. side of the humerus)
Radius: bone type
Long bone
Radius: anatomical location
Lateral of the arm
Radius: articulates with?
Proximal - Humerus & ulna connects to the proximal head of the radius
Distal - carpal bones
Ulna: bone type
Long bone
Radius: attachment site for?
Biceps brachii (radial tuberosity) Supinator, flexor pollicis longus, flexor digitorum superficialis (upper shaft of radius) Extensor pollicis brevis, abductor pollicis longus, pronator teres (mid shaft of radius)
Ulna: anatomical location
Medial of the arm
Ulna: articulates with?
Proximal - humerus (trochlear notch of ulna)
Distal - radius (head of ulna)
Ulna: attachment site for?
Triceps brachii (proximal end at the olecranon process of the ulna)
Bones of the hand
Carpals
Metacarpals
Phalanges
Carpals: location
Wrist
Carpals: how many bones?
8 short bones
2 rows
Carpals: name of joints?
Carpometacarpal joints
Metacarpals: location
Palm of hand
Metacarpals: how many bones?
5 long bones
Metacarpals: name of joints?
Metacarpal-phalangeal joints
Phalanges: how many bones?
Thumb - 2 phalanges
Fingers - 3 phalanges
Overall - 14 per hand
Phalanges: name of joints?
Interphalangeal joints
Pectoral Girdle Joint(s)
Sternoclavicular (SC)
Acromioclavicular (AC)
Shoulder Joint
Glenohumeral
Elbow Joint(s)
Humeroradial
Humeroulnar