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Body Structure:
Body Structure and Processes - Pectoral Girdle - 7/10/24
| Question | Answer |
|---|---|
| appendicular skeleton comprised of? | pectoral girdle upper limb bones pelvic girdle lower limb bones |
| what do the girdles connect? | limbs to the trunk |
| bones in the pectoral girdle? | clavicle and scapula |
| pectoral girdle is the site of articulation for what? | axial skeleton and upper limbs |
| describe the pectoral girdle anteriorly | articulates with manubrium of the sternum |
| describe the pectoral girdle posteriorly | no articulation and position maintained by muscle |
| clavicle? | s shaped bone articulates with the manubrium of sternum at sternal end articulates with acromion of scapula at acromial end |
| clavicle articulates with the manubrium of the sternum at what end? | sternal end |
| clavicle articulates with the acromion of the scapula at what end? | acromial end |
| sternal end? | where clavicle articulates with manubrium of sternum |
| acromial end? | where clavicle articulates with acromion of scapula |
| scapula singular? | scapulae |
| describe the shape of scapula | large triangular bones |
| what about the scapula allow attachment of a large muscle mass? | superior, medial and lateral borders |
| having superior, medial and lateral borders allow what in the scapula? | attachment of a large muscle mass |
| where does the humerus articulate with the pectoral girdle | glenoid cavity |
| glenoid cavity? | where humerus articulates with pectoral girdle |
| where is the acromion and coracoid process found? | in scapula |
| in scapula, what does the scapula spine do? | divides the bone |
| what divides the bone in the scapula? | scapula spine |
| what does the supra/infra spinous fossa do in the scapula? | facilitates muscle attachment |
| what facilitates muscle attachment in the scapula? | supra/infra spinous fossa in the scapula |
| describe the anatomical position of the radius and thumb | radius lies laterally and articulates at thumb |
| describe the anatomical position of ulna and little finger | ulna lies medially and articulates at little finger |
| what type of membrane connects the ulna and radius | interosseous |
| how many bones are there in each wrist, palm and hand? | 27 |
| number of bones in the carpus? | 8 |
| how are the bones split in the carpus? | 4 proximal and 4 distal carpal bones in each hand |
| what do the carpal bones articulate with? | metacarpals |
| number of metacarpals in each hand? | 5 |
| what do the metacarpals articulate with? | carpals and phalanges |
| how many phalanges does each finger have? | 3 |
| number of phalanges on each thumb (pollex) | 2 |
| what has 3 phalanges? | fingers |
| what has 2 phalanges | thumb (pollex) |
| bones in the proximal carpals? | lunate scaphoid triquetrum pisiform trapezoid trapezium hamate capitate |
| why is the pisiform bone hard to see? | small articulates with triquetrum bone so obstructed from view |
| pisiform bone? | sesamoid bone not involved in wrist movement |
| the pisiform bone articulates with what? | triquetrum bone |
| remembering the proximal carpals? | so long to pinky here comes the thumb (C shape route starting from bottom right) |
| how are metacarpals identified? | numbered 1-5 starting at thumb |
| what is missing from the thumb? | middle phalanges |
| what are the 3 types of phalanges? | proximal, middle and distal |
Created by:
cowcow
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