neuro other

Question 1

Where are two cervical enlargements?

Answer 1

The cervical enlargement, which extends between C3 to T1; and the lumbar enlargements which extends between L1 to S2

Question 2

How many vertebrae in each section

Answer 2

7 (8nerves) cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerve

Question 3

Where do cervical nerves exit spinal cord?

Answer 3

In the cervical segments, there are 7 cervical vertebrae and 8 cervical nerves
C1-C7 nerves exit above their vertebrae whereas the C8 nerve exits below the C7 vertebra. It leaves between the C7 vertebra and the first thoracic vertebra. Therefore, each subsequent nerve leaves the cord below the corresponding vertebra.

Question 4

What does prosencephalon, mesencephalon and rhombencephalon divide into and become?

Answer 4

prosencephalon =
telencephalon (cerebral hemi), and diencephalon (thalamus and hypothalamus)

mesencephalon = colliculi

rhombencephalon =
metacephalon (pons, cerebellum) and myelencephalon = medulla oblongata