1. Exercise 15: Activities 1, figure 15.2, figure 15.4 p. 181
Nervous System: Cranial Nerves, Nervous System: Spinal Cord and Spinal Nerves
Exercise 14: Activity 4, figure 14.6, table 14.1 p.168 Dissect Sheep Brain p. 169
Exercise 15: Activities 1, figure 15.2, figure 15.4 p. 181

2. Objectives
Describe the names and general functions of all 12 cranial nerves
Identify brain structures on the dissected sheep brain
Identify the principal structures of the spinal cord and nerve roots on a model
Identify and locate the three meninges of the spinal cord in illustrations
Begin discussion of eye for Lab 13

3. Terms to Know Cranial Nerves I-XII
Meninges – dura mater, arachnoid mater, pia mater
Anterior (ventral) horn
Central canal
Dorsal ramus of spinal nerve
Dorsal root ganglion
Dorsal root of spinal nerve
Lateral horn
Posterior (dorsal) horn
Spinal nerve
Ventral ramus of spinal nerve
Ventral root of spinal nerve
White matter

4. The Cranial Nerves Table 14.1 page 168
I Olfactory smell II Optic vision III Oculomotor eye and lid movement, pupil, lens IV Trochlear superior oblique muscle, eye movement V Trigeminal sensory, motor to face, chewing VI Abducens lateral rectus muscle of eye VII Facial facial expression, taste VIII Vestibulcochlear hearing and equilibrium IX Glossopharyngeal taste, pharynx X Vagus mixed, abdominal viscera, heart XI Accessory mixed, sternocleidomastoid, trapezius XII Hypoglossal mixed, tongue movement

7. Mnemonic: “On occasion our trusty truck acts funny-very good vehicle anyhow”
Mnemonic: “On old Olympus tiny tops a friendly Viking grew vines and hops”

8. Exercise 14, Act. 4 Dissect Brain p. 169

9. Mammilary
body

12. Thalamus

13. Spinal Cord and Spinal Nerves Exercise 15 page 181
Spinal Cord extends from foramen magnum to L2
Meninges cushion and protect spinal cord
dura mater-tough outer covering
arachnoid mater-delicate middle layer, cerebrospinal fluid is found in subarachnoid space
pia mater-inner layer that clings to spinal cord
31 pairs of spinal nerves emerge from spinal cord to serve the body
Cauda equina is collection of spinal nerves at the inferior end of spinal cord

17. Spinal Cord and Spinal Nerves Exercise 15 page 181
Gray matter-H shaped unmyelinated cell bodies and fibers in spinal cord Dorsal (Posterior) horns-posterior projections of gray matter Ventral (anterior) horns-anterior projections of gray matter Lateral horns-lateral gray matter projections in thoracic and lumbuar regions of the spinal cord Central canal-contains cerebrospinal fluid

19. Spinal Cord and Spinal Nerves Exercise 15 page 181
Dorsal root-contains sensory neuron and interneurons fibers enter the spinal cord Dorsal root ganglion-enlarged area of dorsal root that contains cell bodies of sensory neurons Ventral root-contains axons of motor neurons of somatic nervous system Spinal nerve forms from a fusion of dorsal and ventral roots White matter-tracts of myelinated fibers running up and down the spinal cord (posterior, lateral, and anterior columns or funiculi) that are either ascending sensory tracts or descending motor tracts

22. Spinal Cord and Spinal Nerves Exercise 15 page 181
Dorsal ramus of spinal nerve-small branch of spinal nerve that serves the skin and muscles of the posterior body trunk Ventral ramus of spinal nerve-bigger branch of the spinal nerve that serves the skin an muscles of the anterior and lateral trunk Plexuses-network of nerves that serve the limbs

27. For Review
Complete pages #11-14 Complete pages #1-3, 6-7