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A&P 1 Ch 6 part 1
The Skeletal System 1
| Question | Answer |
|---|---|
| immovable fibrous joints in skull | sutures |
| only movable bone of skull | mandible |
| external cranium bones | occipital, parietal, interparietal, frontal, temporal |
| external facial bones | incisive, nasal, maxillary, zygomatic, mandible |
| large hole where medulla oblongatta and arteries enter cranium | foramen magnum |
| c1 also called this | atlas |
| cats and horsesa are only ones with these cranium bones | interparietal bones |
| temporal bones form what joints with the mandible | TMJ joints |
| paranasal sinuses | frontal, ethymoid, sphenoid, maxillary |
| bones of the ear | malleus, incus, stapes |
| most rostral bones, house upper incisors | incisive bones |
| horizontal portion of mandible containing mental foramen | shaft |
| vertical portion, at caudal end where articular condyles forming tmj are located | ramus |
| internal bones of face | palatine, pterygoid, turbinates, vomer bone |
| hyoid apparatus | located between caudal end of mandible, helps with swallowing |
| spinal column order | cervical, thoracic, lumbar, sacrial, coccygeal |
| vertebral formula dog | c7, t13, l7, s3, c 5-23 |
| vertebral formula cat | c7, t13, l7, s, c 20-23 |
| 2nd cervical vertebrae | axis |
| cartilage discs that seperate adjacent vertebral bodies | intervertebral discs |
| spinous process | projects dorsally |
| transverse precess | projects laterally |
| tall spinous processes | thoracic vertebrae |
| bulky bodies | lumbar vertebrae |
| fuse together to form solid structure | sacral vertebrae |
| number and shape varies | coccygeal vertebrae |
| number of pairs of ribs is usually the same as what | number of thoracic vertebrae |
| costal cartilage meets what | sternum |
| last sternebrae | xiphoid process |
| breastbone | sternum |
| 1st sternebrae | manubrium |
| closes the jaw | masseter |
| extend the head and neck | trapezius, splenius |
| extends head and neck, pulls front leg forward | brachiocephalicus |
| flexes head and neck | sternocephalicus |
| inspiratory muscles | diaphram, external intercostal muscles |
| expiratory muscles | abdominal muscles, internal intercostal muscles |
| layers of abdominal muscles | external abdominal oblique, internal abdominal oblique, transversus abdominus, rectus abdominus |
| left and right parts of each come together at the | linea alba |
| flexes the shoulder | latissimus dorsi |
| adduct the front leg | pectoral |
| abducts and flexes the shoulder joint | deltoid |
| flexes the elbow joint | biceps |
| extends the elbow joint | triceps |
| extends the carpus | extensor carpi radialis |
| flexes the digit | deep digital flexor |
| extensor muscles of hip | gluteal |
| main extensor muscle of the stifle joint | quadriceps |
| extends hip joint, main flexors of stifle joint | biceps |
| extensor muscle of hock | gastrocnemius |