Unit 2 Flashcards
Respiration
The exchange of gases between an organism and its environment.
Inspiration
Process of bringing gas into the cells (inhalation)
Expiration
Process of eliminating waste.
Boyle’s Law
If you increase volume, pressure will decrease, if you decrease volume pressure will increase.
3 Parts of Framework or Respiration
Vertebral column, pelvic and pectoral girdles, and rib cage.
Vertebral Column
Provides protection for the spinal cord.
5 divisions of the vertebra (highest to lowest)
Cervical, thoracic, lumbar, sacral, and coccygeal.
Which two sections fuse to become one?
The sacrum and coccygeal.
Invertebral Discs
Fibrocartilaginous discs that are found between C1 and C2, and provide support and cushion to vertebrae.
Body of Vertebrae
Anterior large plate like portion
Pedicles of the vertebrae
On the lateral side of the body, project posteriorly the join at midline.
Neural arch
Created where pedicles join at midline
Vertebral foreman
Canal created when vertebrae are stacked.
Spinous process
Extends dorsally and inferiorly from neural arch, attachment point of muscles and ligaments, protect the vertebral column.
Transverse process
Project laterally on either side of the lamina, and is also an attachment point for muscles and ligaments, and allows for the movement of the odontoid process.
Anatomy of Vertebrae
Ribs articulate with transverse processes in thoracic vertebrae.
Superior Articular processes
They are paired and articulate with adjacent superior vertebrae.
Inferior Articular processes
Articulate with adjacent inferior vertebrae
Anterior and posterior longitudinal ligaments
Extend through the length of the spinal column and bind the bodies of the vertebrae together.
Cervical vertebrae
Composed of the neck bone.
Atlas
First vertebrae, supports weight of the skull, and very small spinous process.
Axis
Fits into atlas, allows for rotation and pivoting of the skull
Dens or odontoid process
Protrudes through the vertebral foreman and helps protect damage to the spinal cord.
Cervical vertebrae
Prominent spinous process, transverse processes, invertebral foramina, superior and inferior articulate facets, and for rotating and rocking.
Thoracic vertebrae
Larger spinous and transverse processes than cervical vertebrae, attachment point for the ribs.
Ribs
They attach to thoracic vertebrae via the superior and inferior costal facets, ribs 1, 10, 11, and 12 attach at a 1:1 ratio meaning rib 10 connects to vertebrae 10, ribs 2-9 attach to the transverse process and the body of the vertebrae above it. All attach to the sternum by means of costal cartilage except for two lowest
Lumbar vertebrae
Largest and strongest vertebrae, carries weight during walking and lifting, and attachment points for back and abdominal muscles.
Sacrum
Sacral vertebrae fuse together or ossify to for the sacrum, sacral foramina provide a passageway for sacral nerves.
Coccyx
4 fused coccygeal vertebrae, beak like, articulates with sacrum by means of a small disc.
Normal spine curvature
Straight from anterior to posterior with very slight curve to the right, straight or slight curve forward in cervical section, convex in thoracic, concave in lumbar and convex in sacral.
Abnormal
Lateral curve scoliosis
Kyphosis
Hunchback, abnormal convexity thoracic region.
Lordosis
Swayback, abnormal concavity in lumbar or cervical area.