1. Hypothalamus Visceral Afferent & Motor Paths
Lab 13
Hypothalamus
Visceral Afferent & Motor Paths

2. 6 1 11 7 2 13 12 8 3 9 4 5 10 hypothalamic sulcus anterior commissure
infundibulum
thalamus 7
lamina
terminalis 2 13 12
Sphenoidal
sinus
Hypophysis
hypo-
thalamus 8 3
optic chiasm
mammillary
bodies
(gross) 9
infundibulum 4
general
location,
median
eminence 5
tuber
cinereum 10

3. 1 2 3

4. What is the ~location of the: Anterior Hypothalamus Region?
Middle Hypothalamus Region?
Posterior Hypothalamus Region?

5. 1 5
Basal Forebrain 6 2 3 4

6. 1 (depression)
Hypophysial Fossa
2 (bony opening)
Optic Canal

7. 1 (opening) 3 2 (nucleus) 4 (connection) 5 (nucleus) 6 (area) 7
Anterior Horn of Lateral Ventricle 3 2
(nucleus)
Paraventricular Nuclei
Fornix
4 (connection)
Anterior Comissure 5
(nucleus)
Supraoptic Nuclei 6
(area)
Preoptic area
of hypothalamus
- GnRH 7
(nuclues)
Suprachiasmatic Nuclei 10
Optic Tract 8
Infundibular Stalk
3rd Ventricle 9

8. What region of hypothalamus is shown here?
Basal Forebrain 2
Uncus
What region of hypothalamus is shown here?
Anterior Hypothalamus

9. What hormone is produced here?
Magnocellular secreting neurons – project to the spinal cord and posterior hypophysis (neurohypophysis)
ADH
Also made in magnocellular neurons and sent via axons to neurohypophysis 1
What hormone is produced here?

10. What region of hypothalamus is shown here?
anterior horn,
lateral ventricle 1
septum
pellucidum 2
Interventricular
foramen 3
genu, IC 4
III ventricle 5
VAP
position of
MFB
9 (fibers) 8
fornix
amygdala 6
optic tract 7
What region of hypothalamus is shown here?
Middle Hypothalamus

11. 6 7 8 9 11 10 13 (nucleus) 14 12 1 (nucleus) 2 (nucleus) 5 4 3
Cingulate
gyrus 6
1 (nucleus)
2 (nucleus)
VPL + VPM (with taste area)
Insular
cortex 5
mammillo-
thalamic
tract
fornix 4
fornix 7 3
mammillo-
thalamic
tract 8
anterior
nucleus 9
mammillary
nuclei 11
MFB 10
position of
tuberomammilary
nucleus (TMN)
DLF location
(medial) 13
(nucleus) 14
hippocampal
formation 12

12. 1 6 5 (region) (nucleus) 2 3 4 PAG PAG (with fibers of DLF
+ continuation of MFB) 1
gen. location
of EW nuc. 6
(nucleus)
PAG
5 (region)
Edinger
Westphal Nuc. 2
Edinger
Westphal
Nuc. 3
PAG (with fibers of DLF
+ continuation of MFB) 4

13. 2 (fibers) 1 (nucleus) 3 (nucleus) 4 (fibers) Dorsal longitudinal
Fasciculus (DLF)
2 (fibers)
1 (nucleus)
Locus ceruleus
parabrachial nucleus
3 (nucleus)
Reticular formation with
Ascending/descending fibers from MFB
4 (fibers)

14. 2 3 (nucleus) 4 (fibers) 6 5 1 (nucleus) 7 (nucleus) 8 (nucleus)
DLF 2
dorsal motor nucleus
of vagus n.
3 (nucleus)
reticular formation
with descending
hypothalamic fibers 4
(fibers) 6
VLM 5
VLM 1
(nucleus)
Solitary nucleus
And tract
Solitary nucleus
And tract
7 (nucleus)
dorsal motor nucleus
of vagus n.
8 (nucleus)
VLM (ventrolateral medulla) – area w/ visceral motor centers like digestion & cardiovascular

15. Descending Hypothalamic System1
Intermediolateral horn

16. 1 Descending Hypothalamic System
Sacral Parasympathetic Nuclei – in the intermediate zone

17. 3 (nucleus) 1 (nerves) 7 (nuclei) 4 (fibers) 5 (nucleus) 6 (fibers) 2
Nerve roots
IX & X
dorsal motor nucleus of vagus n.
1 (nerves)
3 (nucleus)
salivatory nuclei
(of VII and IX).
7 (nuclei)
Solitary tract
4 (fibers)
Solitary nucleus
5 (nucleus)
reticular
formation
with hypo-
thalamic
fibers 6
(fibers) 2
VLM

18. 1 2

19. 1 2 3

20. 5 4 6 3 1 2 7 8 (fibers) anterior cingulate cortex amygdala uncus
ventromedial
prefrontal ctx 3
Orbito-
frontal ctx. 1
olfactory
tract 2
Orbito-
frontal ctx. 7
olfactory
tract
8 (fibers)