Other Cross-Sections

 

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Brainstem-4

 

Coronal Cross-Sections Slide #1

1- Cingulate Gyrus

2- Corpus Callosum

3- Lateral Ventricle

4- Caudate (Body)

5- Putamen

6- Globus Pallidus

Sample slide questions:

1) What is the Brodmann area designation for #1?
2) Name two destinations for fibers originating in #5. Are they excitatory or inhibitory?

 

Coronal Cross-Sections Slide #2

1- Internal Capsule

2- External Capsule

3- Putamen

4- Globus Pallidus-Lateral

5- Globus Pallidus- Medial

6- Anterior Commissure

7- Fornix

8-Thalamus

Sample slide questions:

1) Name one structure of origin of the fibers passing through #7.
2) Are the neurons originating in #4 excitatory or inhibitory? Name one structure to which they project.

 

 

Coronal Cross-Sections Slide #3

1- Cingulate Gyrus

2- Corpus Callosum

3- Lateral Ventricle

4- Caudate (Body)

5- Internal Capsule

6- Putamen

7- Globus Pallidus -Lateral

8- Globus Pallidus -Medial

9- Amygdala

10- Hypothalamus

11- Thalamus

12- Septum Pellucidum

Sample slide questions:

1) Damage to #9 will produce what clinical symptoms?
2) Name the disease that results in deterioration of #4.

 

Coronal Cross-Sections Slide #4

1- Third Ventricle

2- Thalamus

3- Internal Capsule

4- Putamen

5- Globus Pallidus- Lateral

6- Globus Pallidus- Medial

7- Anterior Commissure

8- Fornix

Sample slide questions:

1) What is the function of #7?
2) Name three nuclei contained within #2; for each nucleus, list one input and one output.

 

Coronal Cross-Sections Slide #5

1- Cingulate Gyrus

2- Corpus Callosum

3- Septum Pellucidum

4- Lateral Ventricle

5- Caudate (Body)

6- Thalamus

7-Internal Capsule

8- Putamen

9- Globus Pallidus - Lateral

10- Globus Pallidus -Medial

11- Hypothalamus

12- Massa Intermedia

13-Subthalamic nucleus

Sample slide question:

1) Damage to #13 will result in what behavior?

 

 

Coronal Cross-Sections Slide #6

1- Thalamus

2- Internal Capsule

3- Putamen

4- Anterior Commissure

5- Optic Tract

6- Hypothalamus

7- Fornix

8- Third Ventricle

Sample slide questions:

1) Name three hormones produced by neurons in #6. What is the function of each hormone?
2) Name three destinations for the fibers in #2.

 

Coronal Cross-Sections Slide #7

1- Cingulate Gyrus

2- Corpus Callosum

3- Caudate (Body)

4- Thalamus

5- Hippocampus

6- Superior Colliculus

7- Inferior Colliculus

8- Lateral Lemniscus

9- Superior Cerebellar Peduncle

Sample slide questions:

1) What type of information is processed in #7?
2) Name the three major pathways that enter or traverse #5.

 

Coronal Cross-Sections Slide #8

1- Corpus Callosum

2- Thalamus

3- Superior Colliculus

4- Inferior Colliculus

5- Lateral Lemniscus

6- Middle Cerebellar Peduncle

7- Superior Cerebellar Peduncle

8- Periaqueductal Gray

9- Cerebral Aqueduct

Sample slide questions:

1) What are the destinations for the fibers in #7?
2) Name the cells that give rise to the fibers in #6.

 

 

Coronal Cross-Sections Slide #9

1- Corpus Callosum

2- Lateral Lemniscus

3- Middle Cerebellar Peduncle

4- Superior Cerebellar Peduncle

5- Periaqueductal Gray

6- Inferior Colliculus

7- Superior Colliculus

8- Cerebral Aqueduct

Sample slide questions:

1) Name one function of #5.
2) What type of information is processed in #7?

 

#10--Horizonal view of hypothalamus
Horizontal section through the hypothalamus (outlined in yellow). The anterior commissure is prominent as a band of fibers crossing just rostral to the hypothalamus and the fornices have been sectioned immediately posterior to the anterior commissure, as their columns head for the mammillary bodies. From the Neuroanatomy Interactive Syllabus.

Sample slide question:

1) In this cross-section, locate the following: caudate, putamen, red nucleus, crus cerebri, hippocampus, fornix, internal capsule.

 

#11--Medial view of hypothalamus

Hypothalamic Nuclei, Composite. These images show close-up views of the medial surface of the diencephalon illustrating positions of the main nuclei and the three regions of the hypothalamus from anterior to posterior (indicated by the yellow lines in A). Each region and zone contains several nuclei, but only the major nuclei from the medial zones are indicated here. The paraventricular (PV), anterior (A), and supraoptic and suprachiasmatic (both included as S) nuclei are in the anterior region; the dorsomedial (DM), ventromedial (VM) and arcuate (ARC) are in the tuberal or middle region; and the mammillary (M) and posterior nuclei (P) are in the posterior region. The following frames show these nuclei in histological sections. The image in B shows the structures of the most ventral part of the hypothalamus. The tuber cinereum (TC) is the swelling at the base of the infundibulum (INF). The median eminence (ME) is the central part of that floor to which is attached the infundibulum. The infundibulum or infundibular stalk suspends the pituitary gland (or hypophysis). From the Neuroanatomy Interactive Syllabus. Copyright 1998, University of Washington.

 

#12--Hypothalamus, Preoptic Zone
At this level, a coronal section through the most anterior part of the hypothalamus cuts through the anterior commissure and the optic chiasm. Visible are the medial and lateral preoptic nuclei.

Sample slide questions:

1) What are the functions of the medial preoptic nuclei?

2) What hormones are produced by the medial preoptic nuclei?

 

#13--Hypothalamus, Anterior (Supraoptic) Zone
Prominent at this level are the anterior, paraventricular, supraoptic, and suprachiasmatic nuclei.

Sample slide questions:

1) The paraventricular and supraoptic nuclei contain magnocellular neurons. What hormones do these neurons produce, and where are they released?

2) What is the function of the suprachiasmatic nucleus?

 

 

#14-- Hypothalamus, Middle (Tuberal) Zone
Note here the dorsomedial, ventromedial, and arcuate nuclei (the arcuate nucleus is torn here). The best indicator of the tuberal zone is the continuity of the arcuate nucleus below the third ventricle, in addition to the fornix separating the dorsomedial and ventromedial nuclei from the lateral hypothalamus.

Sample slide questions

1) Name two functions of the ventromedial nucleus.

 

 

#15--Hypothalamus, Posterior (Mammillary) Zone
The posterior zone of the hypothalamus is characterized by the prominent mammillary nuclei, as well as the posterior nuclei.

Sample slide questions:

1) Stimulation of the posterior hypothalamic nuclei produces what type of physiological/behavioral response?

2) Name one mammillary nuclei afferent .

3) Deficiency of what vitamin results in degeneration of the mammillary nuclei?

 

#16--Nissl stain of human hippocampus
Nissl stain of human hippocampus. Major functional regions are labeled in blue. From the Washington University School of Medicine Online Neuroscience Tutorial.

Sample slide questions:

1) What types of cells are located in the dentate gyrus? To where do these cells project? What is the name of the pathway?
2) What types of cells are located in CA1? CA3? To what structures do the cells in each of these areas project?

 

#17--Input and output pathways in the hippocampus

Major input and output pathways in the hippocampus. What types of neurons make up each point in the pathway? From the Washington University School of Medicine Online Neuroscience Tutorial.

 

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