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Cards In This Set
| Front | Back |
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The appendicular skeleton is composed of:
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Limbs
Pectoral girdle Pelvic girdle |
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2 bones of the pectoral girdle:
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Clavicle (collarbone)
Scapula (shoulder blade) |
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Function of the clavicle
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Brace for shoulder/arm complex, helps prevent shoulder dislocation
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Processes of the scapulae
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Acromion: Enlarged end of the spine of scapulae, connects with the clavicle at the acromioclavicular joint.
Coracoid: Beaklike process that anchors to some of the muscles of the arm. Suprascapular Notch: Nerve passageway that is medial to the coracoid process. Glenoid Cavity: Shallow socket that recieves the head of the arm bone. |
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Each shoulder girdle attaches to the axial skeleton at the...
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Sternoclavicular joint.
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The scapula is loosely attached to allow flexibility; what is the drawback to this?
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Flexibility also means the shoulder girdle is very easily dislocated.
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Bones of the Upper Limbs:
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Arm:
Humerus Radius Ulna Hand: Carpals Metacarpals Phalanges |
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Characteristics of the Humerus
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Single bone that forms the arm
Proximal head articulates with glenoid cavity of scapula Distal end articulates with bones of the forearm |
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2 bones of the forearm:
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Radius
Ulna |
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Characteristics of the Radius and Ulna
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Radius is lateral bone
Articulate at radioulnar joints, connected by interosseous membrane Both have a styloid process at distal end |
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Where does the tendon of the biceps muscle attach to the radius?
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The radial tuberosity
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Where does the humerus atach to the ulna?
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At the coronid process and the trochlear notch- these two work together to grip the trochlea of the humerus like pliers.
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How many carpal bones are there in each wrist?
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8; two rows of 4 in each wrist
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Name the 4 bones in the top row of the carpals
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Hamate
Capitate Trapezoid Trapezium |
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Name the 4 bones in the bottom row of the carpals
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Pisiform
Triquetrum Lunate Scaphoid |
