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
