Vertebral column part 1 ex. 1 QQ Flashcards
what is the number of vertebrae in the typical adolescent?
33 segments
what is the # of vertebrae in the typical adult?
26 segments
what is the # of vertebrae in the typical spine?
24 segments
what constitutes the spine?
24 presacral segments, cervical, thoracic and lumbar
how many segments unite to form the typical sacrum?
5 segments
how many segments unite to form the typical coccyx?
4 segments
which mammals do not have 7 cervical vertebrae?
2 toed sloth, manatee, ant bear, 3 toed sloth
which mammals have more than 7 cervical vertebrae?
ant bear and 3 toed sloth
which mammals have less than 7 cervical vertebrae?
manatee and 2 toed sloth
what does the term cervical refer to?
region of the neck
what does the term thoracic refer to?
breast plate or chest; referred to armor bearing region of torso
what other term is often used to identify the vertebral segments of the chest?
dorsal segments, dorsals
what is the typical # of segments in the dorsal or thoracic region?
12 segments
what does the term lumbar refer to?
the loin, region between rib and hip
what is the typical # of segments in the lumbar region?
5 segments
what does the term sacrum refer to?
the holy bone or holy region
what does the term coccyx refer to?
a cuckoo birds bill or beak
what is the length of the typical male spinal column?
70 cm- 28 in
what is the length of the typical female spinal column
60 cm- 25 in
what is the length difference between a typical male and female spinal column?
about 3 inches
what is the length of the male cervical region?
12 cm or 5 in
what is the length of the male thoracic region?
28 cm or 11 in
what is the length of the male lumbar region?
18 cm or 7 in
what parts of the body are supported by the vertebral column?
head, upper extremities, ribs, viscera and pelvis
how does the vertebral column participate in skeletal formation?
ribs are formed from the costal process of the embryonic vertebral template
what levels of the vertebral column specifically accommodate weight-bearing transfer?
S1-S3 at the auricular surface
what is motion?
movement without travel
what is locomotion?
movement to a new site or location
what is specifically responsible for shape and position of the human frame?
comparative anterior vs. posterior height of vertebral body and comparative anterior vs. posterior height of the intervertebral disc
how does the vertebral column accommodate transmission?
the peripheral nerve communicates with the central nervous system via the intervertebral foramen
what organs are specifically associated with the horizontal axis of the skull?
the eye and vestibular apparatus of the inner ear
