1. Science Starter List the 5 senses
What is the difference between the central nervous system and the peripheral nervous system?
What do anterior and posterior mean?

2. Today’s Agenda Science Starter Neuron Foldable (30 minutes)
Nervous System Anatomy
Cranial Nerves Practice
Exit Quiz

3. Neuron Review  FOLDABLE!
Label
Describe the structures and their functions in the boxes
Color the foldable
Place it in your binder with your Unit 3 notes!
**Use your notes, internet, and book (ch.7) to complete today during class**

4. Neuron Review

5. Unit 3: The Nervous System Objective 3.4: Nervous System Anatomy

6. Peripheral Nervous System
The spinal nerves comes out of the spine, and the cranial nerves come out of the brain directly.

7. A. The 12 Pairs of Cranial Nerves
Figure 14.8

8. I. OLFACTORY
Sense of smell

9. Transmits information from the eye’s retina. VISION
II. OPTIC NERVE
Transmits information from the eye’s retina. VISION

10. Controls most of the muscles of the eye that move the eyeball.
III. Oculomotor Nerve
Controls most of the muscles of the eye that move the eyeball.

11. IV. Trochlear Nerve
Innervates an extrinsic eye muscle, eyelid

12. V. Trigeminal Nerve
This is the main sensory nerve of the face. It has a large branch that passes through the foramen of the skull. It has three parts.

13. Controls one of the eye muscles (lateral rectus).
VI: Abducens
Controls one of the eye muscles (lateral rectus).

14. Innervates the muscles of facial expression.
VII. Facial Nerve
Innervates the muscles of facial expression.
BELL’S PALSY is damage of the facial nerve causing paralysis on one side.

15. VIII. VESTIBULOCOCHLEAR
Hearing and balance. (also called Auditory nerve)

16. swallowing, speech, saliva
IX: GLOSSOPHARYNGEAL
pharynx, tongue
swallowing, speech, saliva

17. X. Vagus Nerve
(vagrant = “wanders”) - the only cranial nerve that travels into the abdomen.
This is the most important cranial nerve because it innervates all of the organs in the thoracic and abdominal cavities

18. XI. ACCESSORY NERVE Enters the skull through foramen magnum
It just supplies the shoulder muscles.

19. XII. HYPOGLOSSAL NERVE Supplies the tongue.
Damage causes impairment of speech.

20. I.  Olfactory
sense of smell
II.  Optic
sight
III.  Occulomotor
move eyelids
IV.  Trochlear
move eyes
V. Trigeminal
face, jaw, chewing
VI.  Abducens
eyes
VII.  Facial
facial expressions
VIII.  Vestibulocochlear
            (Auditory)
sense of equilibrium, hearing

21. IX.  Glossopharyngeal
pharynx, tongue
X. Vagus
major organs, viscera
XI.  Accessory
shoulders
XII.  Hypoglossal
tongue

22. Need to know all of the cranial nerves ?
On Old Olympus Towering Top A Fin And German Viewed A Hop

25. B. Spinal Nerves Cervical nerves- neck, shoulder, arms
Thoracic nerves- chest, trunk, abdominal
Lumbar nerves- butt, thigh, leg movement
Sacral nerves- lower body sensation
Coccygeal nerves- tail bone

27. ROOTS

28. Each nerve emerges from the spinal cord at points called ROOTS
Dorsal Root Ganglion
Ventral root ganglion

29. C. Spinal Nerve Roots
Afferent Nerve (AT): Towards the central nervous system, sensory information, dorsal (back)
Efferent Nerve (EXIT): Away from the central nervous system, motor information, ventral (front)

30. Cranial Nerves Worksheet
Color code the front of the worksheet using any colors you choose
Answer the questions on the back by matching the nerve with its description!

31. Exit Quiz How many cranial nerves are there?
How many of the cranial nerves are associated with the eyes?
You lose feeling in your legs, which of the 5 spinal nerves could be effected?
Describe how a sensation results in movement using the terms: afferent/efferent, spinal cord, skin, muscle