Exam 1 Week 1

Question 1

Which mammals do not have seven cervical vertebrae?

Answer 1

the two toed sloth, manatee, ant bear, and three toed sloth

Question 2

Differences in the number and morphology of vertebrae within the population based on age or developmental variation is identified as which type of variation?

Answer 2

Ontogenetic variation

Question 3

Which variations account for the disparity in number and morphology of vertebrae within the population?

Answer 3

gender variation or sexual dimorphism, ontogenetic variation, geographic or population based variation, and idiosyncratic variation

Question 4

What is the length of a typical male spinal column?

Answer 4

about 70 centimeters or 28 inches

Question 5

What is the length of the male cervical region (both measurements)?

Answer 5

about 12 centimeters or 5 inches

Question 6

What is the length of the male thoracic region (both measurements)?

Answer 6

about 28 centimeters or 11 inches

Question 7

Based on the numbers for individual regions of the vertebral column, what is the length of the male spine (both measurements)?

Answer 7

about 58 centimeters or 23 inches

Question 8

Distinguish between motion and locomotion.

Answer 8

motion is movement without travel; locomotion is movement to a new site/location

Question 9

What organ(s) are specifically associated with the horizontal axis of the skull?

Answer 9

the eye and the vestibular apparatus of the inner ear

Question 10

What is the general shape of the vertebral body at each region of the spine? (Cervical, Thoracic, Lumbar)

Answer 10

Cervical=Rectangular
Thoracic=Triangular
Lumbar=Reniform