1. 7 The Nervous System PPT-C This ppt: 14 slides
Total: 34 slides for 2 hour

2. V. Central Nervous System (CNS) A. Brain
1. Cerebrum
2. Thalamus,
3. Hypothalamus
3. Brain stem
4. Cerebellum

3. 1. Cerebrum Lobes Parietal lobe Left cerebral hemisphere Frontal lobe
Occipital
lobe
Temporal
lobe
Cephalad
Cerebellum
Caudal
Brain
stem
(b)
Figure 7.13b

4. 1. Cerebrum … a. *Location b. Cerebral Hemispheres c. Cerebral Cortex
Corpus Callosum
a. *Location
b. Cerebral Hemispheres
c. Cerebral Cortex
*Anterior Association Area function
*Broca’s area function
*Visual area: where?
*Primary Motor Area: function
d. Corpus Callosum

5. Central sulcus
Primary motor area
Primary somatic sensory
area
Premotor area
Gustatory area (taste)
Anterior
association area
Speech/language
(outlined by dashes)
• Working memory
and judgment
• Problem
solving
Posterior association
area
• Language
comprehension
Visual area
Broca’s area
(motor speech)
Olfactory
area
Auditory area
(c)
Figure 7.13c

6. *Temperature: function? *Water: function Metabolism
2. Thalamus
Relay Station
Crude Awareness
3. Hypothalamus
*Temperature: function?
*Water: function
Metabolism
*Drives: functions?
Emotions
Heart, Lungs, …
*Regulates Endocrine system via what gland?
Thalamus & Hypothalamus

7. A. Brain … 4. Brain Stem a. *Midbrain *Reflexes for what? b. *Pons
*Function
c. Medulla oblongata
Heart rate
Blood pressure
Breathing
vomiting
5. CEREBELLUM

8. 5. Items Associated with the Brain
*Cerebrospinal Fluid: define
b. *Meninges: define
Dura Mater
Arachnoid Mater & Subarachnoid Space
Pia Mater
Skin of scalp
Periosteum
Bone of skull
Periosteal
Dura
mater
Meningeal
Superior
sagittal sinus
Arachnoid mater
Pia mater
Subdural
space
Arachnoid villus
Subarachnoid
space
Blood
vessel
Falx cerebri
(in longitudinal
fissure only)
(a)

9. Skull Scalp Superior sagittal sinus Occipital lobe Dura mater
Tentorium
cerebelli
Transverse
sinus
Cerebellum
Temporal
bone
Arachnoid mater
over medulla
oblongata
(b)
Figure 7.17b

10. c. *Ventricles define
Lateral ventricle
Anterior horn
Septum
pellucidum
Interventricular
foramen
Inferior
horn
Third ventricle
Lateral
aperture
Cerebral aqueduct
Fourth ventricle
Central canal
(a) Anterior view

11. Lateral ventricle Anterior horn Posterior horn Interventricular
foramen
Third ventricle
Inferior horn
Cerebral aqueduct
Median
aperture
Fourth ventricle
Lateral
aperture
Central canal
(b) Left lateral view
Figure 7.18b

12. Central Nervous System … B. Spinal Cord
from foramen magnum to 2nd lumbar vertebra
then as a collection of spinal nerves

13. Functions:
Relays information between ____ & _____.
Sensory
Motor
Spinal Reflexes: quick response of spinal cord to pain and other stimul. Functions to protect body part from more damage

14. Central process (axon)
Sensory
neuron
Spinal cord
(central nervous system)
Cell
body
Ganglion
Dendrites
Peripheral
process (axon)
Afferent
transmission
Interneuron
(association
neuron)
Peripheral
nervous system
Receptors
Efferent transmission
Motor neuron
To effectors
(muscles and glands)
Figure 7.6

15. VI. Peripheral Nervous System (PNS)
PNS = Nerves and ganglia
connective tissue

16. A. Nerves and their Classification
FUNCTIONAL
Mixed nerves =
Sensory (afferent) nerves =
Motor (efferent) nerves =
BY LOCATION
1. Cranial
Twelve pairs of nerves
Most are mixed
three are sensory only

17. Hypoglossal nerve (XII)
Figure 13.6a Location and function of cranial nerves.
Filaments of
olfactory nerve (I)
Frontal lobe
Olfactory bulb
Olfactory tract
Optic nerve (II)
Temporal lobe
Optic chiasma
Optic tract
Oculomotor
nerve (III)
Infundibulum
Facial nerve (VII)
Trochlear
nerve (IV)
Vestibulocochlear
nerve (VIII)
Trigeminal
nerve (V)
Glossopharyngeal
nerve (IX)
Abducens
nerve (VI)
Vagus nerve (X)
Cerebellum
Accessory nerve (XI)
Medulla oblongata
Hypoglossal nerve (XII)
© 2013 Pearson Education, Inc.

18. PNS: Cranial Nerves
I Olfactory nerve
II Optic nerve I II

19. PNS: Cranial Nerves
V Trigeminal nerve:
X Vagus nerve: V X

20. 2. Spinal Nerves: 31 Paired Spinal NervesC1 2 3
Cervical
nerves 4 5 6 7 8 T1 2 3 4 5
Thoracic
nerves 6 7 8 9 10
Lumbar
nerves 11 12
Sacral
nerves L1 2 3 4 5 S1 2 3 4
(a)

21. Sciatic Nerve: Phrenic Nerve:
Superior gluteal
Inferior gluteal
Pudendal
Sciatic
Posterior femoral
cutaneous
Common fibular
Tibial
Sural (cut)
Deep fibular
Superficial fibular
Plantar branches

22. © 2013 Pearson Education, Inc.
Figure 13.12c The sacral plexus.
Gluteus maximus
Piriformis
Inferior gluteal
nerve
Common fibular
nerve
Tibial nerve
Pudendal nerve
Posterior femoral
cutaneous nerve
Sciatic nerve
Cadaver photo
© 2013 Pearson Education, Inc.