Chap 7 pT 2 Flashcards
How many bones in the nasal cavity
4; ethmoid, palatine, maxillary, inferior nasal conchae
Nasal septum bones
3; perpendicular plate of eithmoid, vomer, anterior septal cartilage
Vertebral column
Transmits weight of trunk to lower limb, surrounds and protects spinal cord, 5 major regions with 26 irregular bones in adults, 33 in infants
Cervical vertebrae
7; c1-c7: Concave
Thoracic vertebrae
12; t1-t12: Convex
Lumbar vertebrae
5; l1-l5: concave; help us walk upright
Sacral vertebrae
5; vertebrae are fused in adults: convex
Coccyx
4; fused vertebrae in adults
Scoliosis
Lateral curvature of the spine; more common in females
Kyphosis
hunchback
Lorodosis
Swayback, can be exaggerated by pregnancy or “beer” belly
ligaments found from neck to sacrum
Anterior and posterior longitudal ligaments
Ligaments that connect adjacent vertebrae
Ligamentum flavum
Ligaments that connect each vertebrae to those above an below
Short ligaments
Nucleus Pulposis
inner gelatinous nucleus, gives disc its elasticity and compressibility
Anulus Fibrosis
outer collar composed of collagen and fibrocartilage
General structure of vertebrae
body or centrum, vertebral arch, vertebral foramina(vertebral canal), in vertebral foramina (lateral openings for spinal nerves)
Herniated disc
herniation occurs when the annulus fibrosis is thinned and broken and the nucleus pulposis pushes against the spinal cord
What cervical vertebrae turns the neck
Atlas
What cervical vertebrae limits turning range
Axis